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authorShawn Guo <shawn.guo@linaro.org>2011-09-06 02:39:44 -0400
committerArnd Bergmann <arnd@arndb.de>2011-10-31 09:26:23 -0400
commit9fbbe6890c88aa332efe61d5894108dd8b932530 (patch)
treeb27bedc317d68e969e9220cb93de8bc9fc5c62e8 /arch/arm
parent1103643c266ae45c7098e0f7f3ee0b68e3e7c7cc (diff)
arm/imx6q: add core drivers clock, gpc, mmdc and src
It adds a number of core drivers support for imx6q, including clock, General Power Controller (gpc), Multi Mode DDR Controller(mmdc) and System Reset Controller (src). Signed-off-by: Ranjani Vaidyanathan <ra5478@freescale.com> Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Diffstat (limited to 'arch/arm')
-rw-r--r--arch/arm/mach-imx/Kconfig13
-rw-r--r--arch/arm/mach-imx/Makefile4
-rw-r--r--arch/arm/mach-imx/clock-imx6q.c2012
-rw-r--r--arch/arm/mach-imx/gpc.c113
-rw-r--r--arch/arm/mach-imx/mmdc.c72
-rw-r--r--arch/arm/mach-imx/src.c49
6 files changed, 2263 insertions, 0 deletions
diff --git a/arch/arm/mach-imx/Kconfig b/arch/arm/mach-imx/Kconfig
index cc4b6e46f425..40372a8e301b 100644
--- a/arch/arm/mach-imx/Kconfig
+++ b/arch/arm/mach-imx/Kconfig
@@ -1,5 +1,15 @@
1config IMX_HAVE_DMA_V1 1config IMX_HAVE_DMA_V1
2 bool 2 bool
3
4config HAVE_IMX_GPC
5 bool
6
7config HAVE_IMX_MMDC
8 bool
9
10config HAVE_IMX_SRC
11 bool
12
3# 13#
4# ARCH_MX31 and ARCH_MX35 are left for compatibility 14# ARCH_MX31 and ARCH_MX35 are left for compatibility
5# Some usages assume that having one of them implies not having (e.g.) ARCH_MX2. 15# Some usages assume that having one of them implies not having (e.g.) ARCH_MX2.
@@ -601,6 +611,9 @@ config SOC_IMX6Q
601 select ARM_GIC 611 select ARM_GIC
602 select CACHE_L2X0 612 select CACHE_L2X0
603 select CPU_V7 613 select CPU_V7
614 select HAVE_IMX_GPC
615 select HAVE_IMX_MMDC
616 select HAVE_IMX_SRC
604 select USE_OF 617 select USE_OF
605 618
606 help 619 help
diff --git a/arch/arm/mach-imx/Makefile b/arch/arm/mach-imx/Makefile
index b9ed19865a93..65218d98a78d 100644
--- a/arch/arm/mach-imx/Makefile
+++ b/arch/arm/mach-imx/Makefile
@@ -62,3 +62,7 @@ obj-$(CONFIG_MACH_EUKREA_MBIMXSD35_BASEBOARD) += eukrea_mbimxsd35-baseboard.o
62obj-$(CONFIG_MACH_VPR200) += mach-vpr200.o 62obj-$(CONFIG_MACH_VPR200) += mach-vpr200.o
63 63
64obj-$(CONFIG_DEBUG_LL) += lluart.o 64obj-$(CONFIG_DEBUG_LL) += lluart.o
65obj-$(CONFIG_HAVE_IMX_GPC) += gpc.o
66obj-$(CONFIG_HAVE_IMX_MMDC) += mmdc.o
67obj-$(CONFIG_HAVE_IMX_SRC) += src.o
68obj-$(CONFIG_SOC_IMX6Q) += clock-imx6q.o
diff --git a/arch/arm/mach-imx/clock-imx6q.c b/arch/arm/mach-imx/clock-imx6q.c
new file mode 100644
index 000000000000..e0b926dfeced
--- /dev/null
+++ b/arch/arm/mach-imx/clock-imx6q.c
@@ -0,0 +1,2012 @@
1/*
2 * Copyright 2011 Freescale Semiconductor, Inc.
3 * Copyright 2011 Linaro Ltd.
4 *
5 * The code contained herein is licensed under the GNU General Public
6 * License. You may obtain a copy of the GNU General Public License
7 * Version 2 or later at the following locations:
8 *
9 * http://www.opensource.org/licenses/gpl-license.html
10 * http://www.gnu.org/copyleft/gpl.html
11 */
12
13#include <linux/init.h>
14#include <linux/types.h>
15#include <linux/clk.h>
16#include <linux/clkdev.h>
17#include <linux/io.h>
18#include <linux/of.h>
19#include <linux/of_address.h>
20#include <linux/of_irq.h>
21#include <asm/div64.h>
22#include <asm/mach/map.h>
23#include <mach/clock.h>
24#include <mach/common.h>
25#include <mach/hardware.h>
26
27#define PLL_BASE IMX_IO_ADDRESS(MX6Q_ANATOP_BASE_ADDR)
28#define PLL1_SYS (PLL_BASE + 0x000)
29#define PLL2_BUS (PLL_BASE + 0x030)
30#define PLL3_USB_OTG (PLL_BASE + 0x010)
31#define PLL4_AUDIO (PLL_BASE + 0x070)
32#define PLL5_VIDEO (PLL_BASE + 0x0a0)
33#define PLL6_MLB (PLL_BASE + 0x0d0)
34#define PLL7_USB_HOST (PLL_BASE + 0x020)
35#define PLL8_ENET (PLL_BASE + 0x0e0)
36#define PFD_480 (PLL_BASE + 0x0f0)
37#define PFD_528 (PLL_BASE + 0x100)
38#define PLL_NUM_OFFSET 0x010
39#define PLL_DENOM_OFFSET 0x020
40
41#define PFD0 7
42#define PFD1 15
43#define PFD2 23
44#define PFD3 31
45#define PFD_FRAC_MASK 0x3f
46
47#define BM_PLL_BYPASS (0x1 << 16)
48#define BM_PLL_ENABLE (0x1 << 13)
49#define BM_PLL_POWER_DOWN (0x1 << 12)
50#define BM_PLL_LOCK (0x1 << 31)
51#define BP_PLL_SYS_DIV_SELECT 0
52#define BM_PLL_SYS_DIV_SELECT (0x7f << 0)
53#define BP_PLL_BUS_DIV_SELECT 0
54#define BM_PLL_BUS_DIV_SELECT (0x1 << 0)
55#define BP_PLL_USB_DIV_SELECT 0
56#define BM_PLL_USB_DIV_SELECT (0x3 << 0)
57#define BP_PLL_AV_DIV_SELECT 0
58#define BM_PLL_AV_DIV_SELECT (0x7f << 0)
59#define BP_PLL_ENET_DIV_SELECT 0
60#define BM_PLL_ENET_DIV_SELECT (0x3 << 0)
61#define BM_PLL_ENET_EN_PCIE (0x1 << 19)
62#define BM_PLL_ENET_EN_SATA (0x1 << 20)
63
64#define CCM_BASE IMX_IO_ADDRESS(MX6Q_CCM_BASE_ADDR)
65#define CCR (CCM_BASE + 0x00)
66#define CCDR (CCM_BASE + 0x04)
67#define CSR (CCM_BASE + 0x08)
68#define CCSR (CCM_BASE + 0x0c)
69#define CACRR (CCM_BASE + 0x10)
70#define CBCDR (CCM_BASE + 0x14)
71#define CBCMR (CCM_BASE + 0x18)
72#define CSCMR1 (CCM_BASE + 0x1c)
73#define CSCMR2 (CCM_BASE + 0x20)
74#define CSCDR1 (CCM_BASE + 0x24)
75#define CS1CDR (CCM_BASE + 0x28)
76#define CS2CDR (CCM_BASE + 0x2c)
77#define CDCDR (CCM_BASE + 0x30)
78#define CHSCCDR (CCM_BASE + 0x34)
79#define CSCDR2 (CCM_BASE + 0x38)
80#define CSCDR3 (CCM_BASE + 0x3c)
81#define CSCDR4 (CCM_BASE + 0x40)
82#define CWDR (CCM_BASE + 0x44)
83#define CDHIPR (CCM_BASE + 0x48)
84#define CDCR (CCM_BASE + 0x4c)
85#define CTOR (CCM_BASE + 0x50)
86#define CLPCR (CCM_BASE + 0x54)
87#define CISR (CCM_BASE + 0x58)
88#define CIMR (CCM_BASE + 0x5c)
89#define CCOSR (CCM_BASE + 0x60)
90#define CGPR (CCM_BASE + 0x64)
91#define CCGR0 (CCM_BASE + 0x68)
92#define CCGR1 (CCM_BASE + 0x6c)
93#define CCGR2 (CCM_BASE + 0x70)
94#define CCGR3 (CCM_BASE + 0x74)
95#define CCGR4 (CCM_BASE + 0x78)
96#define CCGR5 (CCM_BASE + 0x7c)
97#define CCGR6 (CCM_BASE + 0x80)
98#define CCGR7 (CCM_BASE + 0x84)
99#define CMEOR (CCM_BASE + 0x88)
100
101#define CG0 0
102#define CG1 2
103#define CG2 4
104#define CG3 6
105#define CG4 8
106#define CG5 10
107#define CG6 12
108#define CG7 14
109#define CG8 16
110#define CG9 18
111#define CG10 20
112#define CG11 22
113#define CG12 24
114#define CG13 26
115#define CG14 28
116#define CG15 30
117
118#define BM_CCSR_PLL1_SW_SEL (0x1 << 2)
119#define BM_CCSR_STEP_SEL (0x1 << 8)
120
121#define BP_CACRR_ARM_PODF 0
122#define BM_CACRR_ARM_PODF (0x7 << 0)
123
124#define BP_CBCDR_PERIPH2_CLK2_PODF 0
125#define BM_CBCDR_PERIPH2_CLK2_PODF (0x7 << 0)
126#define BP_CBCDR_MMDC_CH1_AXI_PODF 3
127#define BM_CBCDR_MMDC_CH1_AXI_PODF (0x7 << 3)
128#define BP_CBCDR_AXI_SEL 6
129#define BM_CBCDR_AXI_SEL (0x3 << 6)
130#define BP_CBCDR_IPG_PODF 8
131#define BM_CBCDR_IPG_PODF (0x3 << 8)
132#define BP_CBCDR_AHB_PODF 10
133#define BM_CBCDR_AHB_PODF (0x7 << 10)
134#define BP_CBCDR_AXI_PODF 16
135#define BM_CBCDR_AXI_PODF (0x7 << 16)
136#define BP_CBCDR_MMDC_CH0_AXI_PODF 19
137#define BM_CBCDR_MMDC_CH0_AXI_PODF (0x7 << 19)
138#define BP_CBCDR_PERIPH_CLK_SEL 25
139#define BM_CBCDR_PERIPH_CLK_SEL (0x1 << 25)
140#define BP_CBCDR_PERIPH2_CLK_SEL 26
141#define BM_CBCDR_PERIPH2_CLK_SEL (0x1 << 26)
142#define BP_CBCDR_PERIPH_CLK2_PODF 27
143#define BM_CBCDR_PERIPH_CLK2_PODF (0x7 << 27)
144
145#define BP_CBCMR_GPU2D_AXI_SEL 0
146#define BM_CBCMR_GPU2D_AXI_SEL (0x1 << 0)
147#define BP_CBCMR_GPU3D_AXI_SEL 1
148#define BM_CBCMR_GPU3D_AXI_SEL (0x1 << 1)
149#define BP_CBCMR_GPU3D_CORE_SEL 4
150#define BM_CBCMR_GPU3D_CORE_SEL (0x3 << 4)
151#define BP_CBCMR_GPU3D_SHADER_SEL 8
152#define BM_CBCMR_GPU3D_SHADER_SEL (0x3 << 8)
153#define BP_CBCMR_PCIE_AXI_SEL 10
154#define BM_CBCMR_PCIE_AXI_SEL (0x1 << 10)
155#define BP_CBCMR_VDO_AXI_SEL 11
156#define BM_CBCMR_VDO_AXI_SEL (0x1 << 11)
157#define BP_CBCMR_PERIPH_CLK2_SEL 12
158#define BM_CBCMR_PERIPH_CLK2_SEL (0x3 << 12)
159#define BP_CBCMR_VPU_AXI_SEL 14
160#define BM_CBCMR_VPU_AXI_SEL (0x3 << 14)
161#define BP_CBCMR_GPU2D_CORE_SEL 16
162#define BM_CBCMR_GPU2D_CORE_SEL (0x3 << 16)
163#define BP_CBCMR_PRE_PERIPH_CLK_SEL 18
164#define BM_CBCMR_PRE_PERIPH_CLK_SEL (0x3 << 18)
165#define BP_CBCMR_PERIPH2_CLK2_SEL 20
166#define BM_CBCMR_PERIPH2_CLK2_SEL (0x1 << 20)
167#define BP_CBCMR_PRE_PERIPH2_CLK_SEL 21
168#define BM_CBCMR_PRE_PERIPH2_CLK_SEL (0x3 << 21)
169#define BP_CBCMR_GPU2D_CORE_PODF 23
170#define BM_CBCMR_GPU2D_CORE_PODF (0x7 << 23)
171#define BP_CBCMR_GPU3D_CORE_PODF 26
172#define BM_CBCMR_GPU3D_CORE_PODF (0x7 << 26)
173#define BP_CBCMR_GPU3D_SHADER_PODF 29
174#define BM_CBCMR_GPU3D_SHADER_PODF (0x7 << 29)
175
176#define BP_CSCMR1_PERCLK_PODF 0
177#define BM_CSCMR1_PERCLK_PODF (0x3f << 0)
178#define BP_CSCMR1_SSI1_SEL 10
179#define BM_CSCMR1_SSI1_SEL (0x3 << 10)
180#define BP_CSCMR1_SSI2_SEL 12
181#define BM_CSCMR1_SSI2_SEL (0x3 << 12)
182#define BP_CSCMR1_SSI3_SEL 14
183#define BM_CSCMR1_SSI3_SEL (0x3 << 14)
184#define BP_CSCMR1_USDHC1_SEL 16
185#define BM_CSCMR1_USDHC1_SEL (0x1 << 16)
186#define BP_CSCMR1_USDHC2_SEL 17
187#define BM_CSCMR1_USDHC2_SEL (0x1 << 17)
188#define BP_CSCMR1_USDHC3_SEL 18
189#define BM_CSCMR1_USDHC3_SEL (0x1 << 18)
190#define BP_CSCMR1_USDHC4_SEL 19
191#define BM_CSCMR1_USDHC4_SEL (0x1 << 19)
192#define BP_CSCMR1_EMI_PODF 20
193#define BM_CSCMR1_EMI_PODF (0x7 << 20)
194#define BP_CSCMR1_EMI_SLOW_PODF 23
195#define BM_CSCMR1_EMI_SLOW_PODF (0x7 << 23)
196#define BP_CSCMR1_EMI_SEL 27
197#define BM_CSCMR1_EMI_SEL (0x3 << 27)
198#define BP_CSCMR1_EMI_SLOW_SEL 29
199#define BM_CSCMR1_EMI_SLOW_SEL (0x3 << 29)
200
201#define BP_CSCMR2_CAN_PODF 2
202#define BM_CSCMR2_CAN_PODF (0x3f << 2)
203#define BM_CSCMR2_LDB_DI0_IPU_DIV (0x1 << 10)
204#define BM_CSCMR2_LDB_DI1_IPU_DIV (0x1 << 11)
205#define BP_CSCMR2_ESAI_SEL 19
206#define BM_CSCMR2_ESAI_SEL (0x3 << 19)
207
208#define BP_CSCDR1_UART_PODF 0
209#define BM_CSCDR1_UART_PODF (0x3f << 0)
210#define BP_CSCDR1_USDHC1_PODF 11
211#define BM_CSCDR1_USDHC1_PODF (0x7 << 11)
212#define BP_CSCDR1_USDHC2_PODF 16
213#define BM_CSCDR1_USDHC2_PODF (0x7 << 16)
214#define BP_CSCDR1_USDHC3_PODF 19
215#define BM_CSCDR1_USDHC3_PODF (0x7 << 19)
216#define BP_CSCDR1_USDHC4_PODF 22
217#define BM_CSCDR1_USDHC4_PODF (0x7 << 22)
218#define BP_CSCDR1_VPU_AXI_PODF 25
219#define BM_CSCDR1_VPU_AXI_PODF (0x7 << 25)
220
221#define BP_CS1CDR_SSI1_PODF 0
222#define BM_CS1CDR_SSI1_PODF (0x3f << 0)
223#define BP_CS1CDR_SSI1_PRED 6
224#define BM_CS1CDR_SSI1_PRED (0x7 << 6)
225#define BP_CS1CDR_ESAI_PRED 9
226#define BM_CS1CDR_ESAI_PRED (0x7 << 9)
227#define BP_CS1CDR_SSI3_PODF 16
228#define BM_CS1CDR_SSI3_PODF (0x3f << 16)
229#define BP_CS1CDR_SSI3_PRED 22
230#define BM_CS1CDR_SSI3_PRED (0x7 << 22)
231#define BP_CS1CDR_ESAI_PODF 25
232#define BM_CS1CDR_ESAI_PODF (0x7 << 25)
233
234#define BP_CS2CDR_SSI2_PODF 0
235#define BM_CS2CDR_SSI2_PODF (0x3f << 0)
236#define BP_CS2CDR_SSI2_PRED 6
237#define BM_CS2CDR_SSI2_PRED (0x7 << 6)
238#define BP_CS2CDR_LDB_DI0_SEL 9
239#define BM_CS2CDR_LDB_DI0_SEL (0x7 << 9)
240#define BP_CS2CDR_LDB_DI1_SEL 12
241#define BM_CS2CDR_LDB_DI1_SEL (0x7 << 12)
242#define BP_CS2CDR_ENFC_SEL 16
243#define BM_CS2CDR_ENFC_SEL (0x3 << 16)
244#define BP_CS2CDR_ENFC_PRED 18
245#define BM_CS2CDR_ENFC_PRED (0x7 << 18)
246#define BP_CS2CDR_ENFC_PODF 21
247#define BM_CS2CDR_ENFC_PODF (0x3f << 21)
248
249#define BP_CDCDR_ASRC_SERIAL_SEL 7
250#define BM_CDCDR_ASRC_SERIAL_SEL (0x3 << 7)
251#define BP_CDCDR_ASRC_SERIAL_PODF 9
252#define BM_CDCDR_ASRC_SERIAL_PODF (0x7 << 9)
253#define BP_CDCDR_ASRC_SERIAL_PRED 12
254#define BM_CDCDR_ASRC_SERIAL_PRED (0x7 << 12)
255#define BP_CDCDR_SPDIF_SEL 20
256#define BM_CDCDR_SPDIF_SEL (0x3 << 20)
257#define BP_CDCDR_SPDIF_PODF 22
258#define BM_CDCDR_SPDIF_PODF (0x7 << 22)
259#define BP_CDCDR_SPDIF_PRED 25
260#define BM_CDCDR_SPDIF_PRED (0x7 << 25)
261#define BP_CDCDR_HSI_TX_PODF 29
262#define BM_CDCDR_HSI_TX_PODF (0x7 << 29)
263#define BP_CDCDR_HSI_TX_SEL 28
264#define BM_CDCDR_HSI_TX_SEL (0x1 << 28)
265
266#define BP_CHSCCDR_IPU1_DI0_SEL 0
267#define BM_CHSCCDR_IPU1_DI0_SEL (0x7 << 0)
268#define BP_CHSCCDR_IPU1_DI0_PRE_PODF 3
269#define BM_CHSCCDR_IPU1_DI0_PRE_PODF (0x7 << 3)
270#define BP_CHSCCDR_IPU1_DI0_PRE_SEL 6
271#define BM_CHSCCDR_IPU1_DI0_PRE_SEL (0x7 << 6)
272#define BP_CHSCCDR_IPU1_DI1_SEL 9
273#define BM_CHSCCDR_IPU1_DI1_SEL (0x7 << 9)
274#define BP_CHSCCDR_IPU1_DI1_PRE_PODF 12
275#define BM_CHSCCDR_IPU1_DI1_PRE_PODF (0x7 << 12)
276#define BP_CHSCCDR_IPU1_DI1_PRE_SEL 15
277#define BM_CHSCCDR_IPU1_DI1_PRE_SEL (0x7 << 15)
278
279#define BP_CSCDR2_IPU2_DI0_SEL 0
280#define BM_CSCDR2_IPU2_DI0_SEL (0x7)
281#define BP_CSCDR2_IPU2_DI0_PRE_PODF 3
282#define BM_CSCDR2_IPU2_DI0_PRE_PODF (0x7 << 3)
283#define BP_CSCDR2_IPU2_DI0_PRE_SEL 6
284#define BM_CSCDR2_IPU2_DI0_PRE_SEL (0x7 << 6)
285#define BP_CSCDR2_IPU2_DI1_SEL 9
286#define BM_CSCDR2_IPU2_DI1_SEL (0x7 << 9)
287#define BP_CSCDR2_IPU2_DI1_PRE_PODF 12
288#define BM_CSCDR2_IPU2_DI1_PRE_PODF (0x7 << 12)
289#define BP_CSCDR2_IPU2_DI1_PRE_SEL 15
290#define BM_CSCDR2_IPU2_DI1_PRE_SEL (0x7 << 15)
291#define BP_CSCDR2_ECSPI_CLK_PODF 19
292#define BM_CSCDR2_ECSPI_CLK_PODF (0x3f << 19)
293
294#define BP_CSCDR3_IPU1_HSP_SEL 9
295#define BM_CSCDR3_IPU1_HSP_SEL (0x3 << 9)
296#define BP_CSCDR3_IPU1_HSP_PODF 11
297#define BM_CSCDR3_IPU1_HSP_PODF (0x7 << 11)
298#define BP_CSCDR3_IPU2_HSP_SEL 14
299#define BM_CSCDR3_IPU2_HSP_SEL (0x3 << 14)
300#define BP_CSCDR3_IPU2_HSP_PODF 16
301#define BM_CSCDR3_IPU2_HSP_PODF (0x7 << 16)
302
303#define BM_CDHIPR_AXI_PODF_BUSY (0x1 << 0)
304#define BM_CDHIPR_AHB_PODF_BUSY (0x1 << 1)
305#define BM_CDHIPR_MMDC_CH1_PODF_BUSY (0x1 << 2)
306#define BM_CDHIPR_PERIPH2_SEL_BUSY (0x1 << 3)
307#define BM_CDHIPR_MMDC_CH0_PODF_BUSY (0x1 << 4)
308#define BM_CDHIPR_PERIPH_SEL_BUSY (0x1 << 5)
309#define BM_CDHIPR_ARM_PODF_BUSY (0x1 << 16)
310
311#define BP_CLPCR_LPM 0
312#define BM_CLPCR_LPM (0x3 << 0)
313#define BM_CLPCR_BYPASS_PMIC_READY (0x1 << 2)
314#define BM_CLPCR_ARM_CLK_DIS_ON_LPM (0x1 << 5)
315#define BM_CLPCR_SBYOS (0x1 << 6)
316#define BM_CLPCR_DIS_REF_OSC (0x1 << 7)
317#define BM_CLPCR_VSTBY (0x1 << 8)
318#define BP_CLPCR_STBY_COUNT 9
319#define BM_CLPCR_STBY_COUNT (0x3 << 9)
320#define BM_CLPCR_COSC_PWRDOWN (0x1 << 11)
321#define BM_CLPCR_WB_PER_AT_LPM (0x1 << 16)
322#define BM_CLPCR_WB_CORE_AT_LPM (0x1 << 17)
323#define BM_CLPCR_BYP_MMDC_CH0_LPM_HS (0x1 << 19)
324#define BM_CLPCR_BYP_MMDC_CH1_LPM_HS (0x1 << 21)
325#define BM_CLPCR_MASK_CORE0_WFI (0x1 << 22)
326#define BM_CLPCR_MASK_CORE1_WFI (0x1 << 23)
327#define BM_CLPCR_MASK_CORE2_WFI (0x1 << 24)
328#define BM_CLPCR_MASK_CORE3_WFI (0x1 << 25)
329#define BM_CLPCR_MASK_SCU_IDLE (0x1 << 26)
330#define BM_CLPCR_MASK_L2CC_IDLE (0x1 << 27)
331
332#define FREQ_480M 480000000
333#define FREQ_528M 528000000
334#define FREQ_594M 594000000
335#define FREQ_650M 650000000
336#define FREQ_1300M 1300000000
337
338static struct clk pll1_sys;
339static struct clk pll2_bus;
340static struct clk pll3_usb_otg;
341static struct clk pll4_audio;
342static struct clk pll5_video;
343static struct clk pll6_mlb;
344static struct clk pll7_usb_host;
345static struct clk pll8_enet;
346static struct clk apbh_dma_clk;
347static struct clk arm_clk;
348static struct clk ipg_clk;
349static struct clk ahb_clk;
350static struct clk axi_clk;
351static struct clk mmdc_ch0_axi_clk;
352static struct clk mmdc_ch1_axi_clk;
353static struct clk periph_clk;
354static struct clk periph_pre_clk;
355static struct clk periph_clk2_clk;
356static struct clk periph2_clk;
357static struct clk periph2_pre_clk;
358static struct clk periph2_clk2_clk;
359static struct clk gpu2d_core_clk;
360static struct clk gpu3d_core_clk;
361static struct clk gpu3d_shader_clk;
362static struct clk ipg_perclk;
363static struct clk emi_clk;
364static struct clk emi_slow_clk;
365static struct clk can1_clk;
366static struct clk uart_clk;
367static struct clk usdhc1_clk;
368static struct clk usdhc2_clk;
369static struct clk usdhc3_clk;
370static struct clk usdhc4_clk;
371static struct clk vpu_clk;
372static struct clk hsi_tx_clk;
373static struct clk ipu1_di0_pre_clk;
374static struct clk ipu1_di1_pre_clk;
375static struct clk ipu2_di0_pre_clk;
376static struct clk ipu2_di1_pre_clk;
377static struct clk ipu1_clk;
378static struct clk ipu2_clk;
379static struct clk ssi1_clk;
380static struct clk ssi3_clk;
381static struct clk esai_clk;
382static struct clk ssi2_clk;
383static struct clk spdif_clk;
384static struct clk asrc_serial_clk;
385static struct clk gpu2d_axi_clk;
386static struct clk gpu3d_axi_clk;
387static struct clk pcie_clk;
388static struct clk vdo_axi_clk;
389static struct clk ldb_di0_clk;
390static struct clk ldb_di1_clk;
391static struct clk ipu1_di0_clk;
392static struct clk ipu1_di1_clk;
393static struct clk ipu2_di0_clk;
394static struct clk ipu2_di1_clk;
395static struct clk enfc_clk;
396static struct clk dummy_clk = {};
397
398static unsigned long external_high_reference;
399static unsigned long external_low_reference;
400static unsigned long oscillator_reference;
401
402static unsigned long get_oscillator_reference_clock_rate(struct clk *clk)
403{
404 return oscillator_reference;
405}
406
407static unsigned long get_high_reference_clock_rate(struct clk *clk)
408{
409 return external_high_reference;
410}
411
412static unsigned long get_low_reference_clock_rate(struct clk *clk)
413{
414 return external_low_reference;
415}
416
417static struct clk ckil_clk = {
418 .get_rate = get_low_reference_clock_rate,
419};
420
421static struct clk ckih_clk = {
422 .get_rate = get_high_reference_clock_rate,
423};
424
425static struct clk osc_clk = {
426 .get_rate = get_oscillator_reference_clock_rate,
427};
428
429static inline void __iomem *pll_get_reg_addr(struct clk *pll)
430{
431 if (pll == &pll1_sys)
432 return PLL1_SYS;
433 else if (pll == &pll2_bus)
434 return PLL2_BUS;
435 else if (pll == &pll3_usb_otg)
436 return PLL3_USB_OTG;
437 else if (pll == &pll4_audio)
438 return PLL4_AUDIO;
439 else if (pll == &pll5_video)
440 return PLL5_VIDEO;
441 else if (pll == &pll6_mlb)
442 return PLL6_MLB;
443 else if (pll == &pll7_usb_host)
444 return PLL7_USB_HOST;
445 else if (pll == &pll8_enet)
446 return PLL8_ENET;
447 else
448 BUG();
449
450 return NULL;
451}
452
453static int pll_enable(struct clk *clk)
454{
455 int timeout = 0x100000;
456 void __iomem *reg;
457 u32 val;
458
459 reg = pll_get_reg_addr(clk);
460 val = readl_relaxed(reg);
461 val &= ~BM_PLL_BYPASS;
462 val &= ~BM_PLL_POWER_DOWN;
463 /* 480MHz PLLs have the opposite definition for power bit */
464 if (clk == &pll3_usb_otg || clk == &pll7_usb_host)
465 val |= BM_PLL_POWER_DOWN;
466 writel_relaxed(val, reg);
467
468 /* Wait for PLL to lock */
469 while (!(readl_relaxed(reg) & BM_PLL_LOCK) && --timeout)
470 cpu_relax();
471
472 if (unlikely(!timeout))
473 return -EBUSY;
474
475 /* Enable the PLL output now */
476 val = readl_relaxed(reg);
477 val |= BM_PLL_ENABLE;
478 writel_relaxed(val, reg);
479
480 return 0;
481}
482
483static void pll_disable(struct clk *clk)
484{
485 void __iomem *reg;
486 u32 val;
487
488 reg = pll_get_reg_addr(clk);
489 val = readl_relaxed(reg);
490 val &= ~BM_PLL_ENABLE;
491 val |= BM_PLL_BYPASS;
492 val |= BM_PLL_POWER_DOWN;
493 if (clk == &pll3_usb_otg || clk == &pll7_usb_host)
494 val &= ~BM_PLL_POWER_DOWN;
495 writel_relaxed(val, reg);
496}
497
498static unsigned long pll1_sys_get_rate(struct clk *clk)
499{
500 u32 div = (readl_relaxed(PLL1_SYS) & BM_PLL_SYS_DIV_SELECT) >>
501 BP_PLL_SYS_DIV_SELECT;
502
503 return clk_get_rate(clk->parent) * div / 2;
504}
505
506static int pll1_sys_set_rate(struct clk *clk, unsigned long rate)
507{
508 u32 val, div;
509
510 if (rate < FREQ_650M || rate > FREQ_1300M)
511 return -EINVAL;
512
513 div = rate * 2 / clk_get_rate(clk->parent);
514 val = readl_relaxed(PLL1_SYS);
515 val &= ~BM_PLL_SYS_DIV_SELECT;
516 val |= div << BP_PLL_SYS_DIV_SELECT;
517 writel_relaxed(val, PLL1_SYS);
518
519 return 0;
520}
521
522static unsigned long pll8_enet_get_rate(struct clk *clk)
523{
524 u32 div = (readl_relaxed(PLL8_ENET) & BM_PLL_ENET_DIV_SELECT) >>
525 BP_PLL_ENET_DIV_SELECT;
526
527 switch (div) {
528 case 0:
529 return 25000000;
530 case 1:
531 return 50000000;
532 case 2:
533 return 100000000;
534 case 3:
535 return 125000000;
536 }
537
538 return 0;
539}
540
541static int pll8_enet_set_rate(struct clk *clk, unsigned long rate)
542{
543 u32 val, div;
544
545 switch (rate) {
546 case 25000000:
547 div = 0;
548 break;
549 case 50000000:
550 div = 1;
551 break;
552 case 100000000:
553 div = 2;
554 break;
555 case 125000000:
556 div = 3;
557 break;
558 default:
559 return -EINVAL;
560 }
561
562 val = readl_relaxed(PLL8_ENET);
563 val &= ~BM_PLL_ENET_DIV_SELECT;
564 val |= div << BP_PLL_ENET_DIV_SELECT;
565 writel_relaxed(val, PLL8_ENET);
566
567 return 0;
568}
569
570static unsigned long pll_av_get_rate(struct clk *clk)
571{
572 void __iomem *reg = (clk == &pll4_audio) ? PLL4_AUDIO : PLL5_VIDEO;
573 unsigned long parent_rate = clk_get_rate(clk->parent);
574 u32 mfn = readl_relaxed(reg + PLL_NUM_OFFSET);
575 u32 mfd = readl_relaxed(reg + PLL_DENOM_OFFSET);
576 u32 div = (readl_relaxed(reg) & BM_PLL_AV_DIV_SELECT) >>
577 BP_PLL_AV_DIV_SELECT;
578
579 return (parent_rate * div) + ((parent_rate / mfd) * mfn);
580}
581
582static int pll_av_set_rate(struct clk *clk, unsigned long rate)
583{
584 void __iomem *reg = (clk == &pll4_audio) ? PLL4_AUDIO : PLL5_VIDEO;
585 unsigned int parent_rate = clk_get_rate(clk->parent);
586 u32 val, div;
587 u32 mfn, mfd = 1000000;
588 s64 temp64;
589
590 if (rate < FREQ_650M || rate > FREQ_1300M)
591 return -EINVAL;
592
593 div = rate / parent_rate;
594 temp64 = (u64) (rate - div * parent_rate);
595 temp64 *= mfd;
596 do_div(temp64, parent_rate);
597 mfn = temp64;
598
599 val = readl_relaxed(reg);
600 val &= ~BM_PLL_AV_DIV_SELECT;
601 val |= div << BP_PLL_AV_DIV_SELECT;
602 writel_relaxed(val, reg);
603 writel_relaxed(mfn, reg + PLL_NUM_OFFSET);
604 writel_relaxed(mfd, reg + PLL_DENOM_OFFSET);
605
606 return 0;
607}
608
609static void __iomem *pll_get_div_reg_bit(struct clk *clk, u32 *bp, u32 *bm)
610{
611 void __iomem *reg;
612
613 if (clk == &pll2_bus) {
614 reg = PLL2_BUS;
615 *bp = BP_PLL_BUS_DIV_SELECT;
616 *bm = BM_PLL_BUS_DIV_SELECT;
617 } else if (clk == &pll3_usb_otg) {
618 reg = PLL3_USB_OTG;
619 *bp = BP_PLL_USB_DIV_SELECT;
620 *bm = BM_PLL_USB_DIV_SELECT;
621 } else if (clk == &pll7_usb_host) {
622 reg = PLL7_USB_HOST;
623 *bp = BP_PLL_USB_DIV_SELECT;
624 *bm = BM_PLL_USB_DIV_SELECT;
625 } else {
626 BUG();
627 }
628
629 return reg;
630}
631
632static unsigned long pll_get_rate(struct clk *clk)
633{
634 void __iomem *reg;
635 u32 div, bp, bm;
636
637 reg = pll_get_div_reg_bit(clk, &bp, &bm);
638 div = (readl_relaxed(reg) & bm) >> bp;
639
640 return (div == 1) ? clk_get_rate(clk->parent) * 22 :
641 clk_get_rate(clk->parent) * 20;
642}
643
644static int pll_set_rate(struct clk *clk, unsigned long rate)
645{
646 void __iomem *reg;
647 u32 val, div, bp, bm;
648
649 if (rate == FREQ_528M)
650 div = 1;
651 else if (rate == FREQ_480M)
652 div = 0;
653 else
654 return -EINVAL;
655
656 reg = pll_get_div_reg_bit(clk, &bp, &bm);
657 val = readl_relaxed(reg);
658 val &= ~bm;
659 val |= div << bp;
660 writel_relaxed(val, reg);
661
662 return 0;
663}
664
665#define pll2_bus_get_rate pll_get_rate
666#define pll2_bus_set_rate pll_set_rate
667#define pll3_usb_otg_get_rate pll_get_rate
668#define pll3_usb_otg_set_rate pll_set_rate
669#define pll7_usb_host_get_rate pll_get_rate
670#define pll7_usb_host_set_rate pll_set_rate
671#define pll4_audio_get_rate pll_av_get_rate
672#define pll4_audio_set_rate pll_av_set_rate
673#define pll5_video_get_rate pll_av_get_rate
674#define pll5_video_set_rate pll_av_set_rate
675#define pll6_mlb_get_rate NULL
676#define pll6_mlb_set_rate NULL
677
678#define DEF_PLL(name) \
679 static struct clk name = { \
680 .enable = pll_enable, \
681 .disable = pll_disable, \
682 .get_rate = name##_get_rate, \
683 .set_rate = name##_set_rate, \
684 .parent = &osc_clk, \
685 }
686
687DEF_PLL(pll1_sys);
688DEF_PLL(pll2_bus);
689DEF_PLL(pll3_usb_otg);
690DEF_PLL(pll4_audio);
691DEF_PLL(pll5_video);
692DEF_PLL(pll6_mlb);
693DEF_PLL(pll7_usb_host);
694DEF_PLL(pll8_enet);
695
696static unsigned long pfd_get_rate(struct clk *clk)
697{
698 u64 tmp = (u64) clk_get_rate(clk->parent) * 18;
699 u32 frac, bp_frac;
700
701 if (apbh_dma_clk.usecount == 0)
702 apbh_dma_clk.enable(&apbh_dma_clk);
703
704 bp_frac = clk->enable_shift - 7;
705 frac = readl_relaxed(clk->enable_reg) >> bp_frac & PFD_FRAC_MASK;
706 do_div(tmp, frac);
707
708 return tmp;
709}
710
711static int pfd_set_rate(struct clk *clk, unsigned long rate)
712{
713 u32 val, frac, bp_frac;
714 u64 tmp = (u64) clk_get_rate(clk->parent) * 18;
715
716 if (apbh_dma_clk.usecount == 0)
717 apbh_dma_clk.enable(&apbh_dma_clk);
718
719 /*
720 * Round up the divider so that we don't set a rate
721 * higher than what is requested
722 */
723 tmp += rate / 2;
724 do_div(tmp, rate);
725 frac = tmp;
726 frac = (frac < 12) ? 12 : frac;
727 frac = (frac > 35) ? 35 : frac;
728
729 /*
730 * The frac field always starts from 7 bits lower
731 * position of enable bit
732 */
733 bp_frac = clk->enable_shift - 7;
734 val = readl_relaxed(clk->enable_reg);
735 val &= ~(PFD_FRAC_MASK << bp_frac);
736 val |= frac << bp_frac;
737 writel_relaxed(val, clk->enable_reg);
738
739 tmp = (u64) clk_get_rate(clk->parent) * 18;
740 do_div(tmp, frac);
741
742 if (apbh_dma_clk.usecount == 0)
743 apbh_dma_clk.disable(&apbh_dma_clk);
744
745 return 0;
746}
747
748static unsigned long pfd_round_rate(struct clk *clk, unsigned long rate)
749{
750 u32 frac;
751 u64 tmp;
752
753 tmp = (u64) clk_get_rate(clk->parent) * 18;
754 tmp += rate / 2;
755 do_div(tmp, rate);
756 frac = tmp;
757 frac = (frac < 12) ? 12 : frac;
758 frac = (frac > 35) ? 35 : frac;
759 tmp = (u64) clk_get_rate(clk->parent) * 18;
760 do_div(tmp, frac);
761
762 return tmp;
763}
764
765static int pfd_enable(struct clk *clk)
766{
767 u32 val;
768
769 if (apbh_dma_clk.usecount == 0)
770 apbh_dma_clk.enable(&apbh_dma_clk);
771
772 val = readl_relaxed(clk->enable_reg);
773 val &= ~(1 << clk->enable_shift);
774 writel_relaxed(val, clk->enable_reg);
775
776 if (apbh_dma_clk.usecount == 0)
777 apbh_dma_clk.disable(&apbh_dma_clk);
778
779 return 0;
780}
781
782static void pfd_disable(struct clk *clk)
783{
784 u32 val;
785
786 if (apbh_dma_clk.usecount == 0)
787 apbh_dma_clk.enable(&apbh_dma_clk);
788
789 val = readl_relaxed(clk->enable_reg);
790 val |= 1 << clk->enable_shift;
791 writel_relaxed(val, clk->enable_reg);
792
793 if (apbh_dma_clk.usecount == 0)
794 apbh_dma_clk.disable(&apbh_dma_clk);
795}
796
797#define DEF_PFD(name, er, es, p) \
798 static struct clk name = { \
799 .enable_reg = er, \
800 .enable_shift = es, \
801 .enable = pfd_enable, \
802 .disable = pfd_disable, \
803 .get_rate = pfd_get_rate, \
804 .set_rate = pfd_set_rate, \
805 .round_rate = pfd_round_rate, \
806 .parent = p, \
807 }
808
809DEF_PFD(pll2_pfd_352m, PFD_528, PFD0, &pll2_bus);
810DEF_PFD(pll2_pfd_594m, PFD_528, PFD1, &pll2_bus);
811DEF_PFD(pll2_pfd_400m, PFD_528, PFD2, &pll2_bus);
812DEF_PFD(pll3_pfd_720m, PFD_480, PFD0, &pll3_usb_otg);
813DEF_PFD(pll3_pfd_540m, PFD_480, PFD1, &pll3_usb_otg);
814DEF_PFD(pll3_pfd_508m, PFD_480, PFD2, &pll3_usb_otg);
815DEF_PFD(pll3_pfd_454m, PFD_480, PFD3, &pll3_usb_otg);
816
817static unsigned long pll2_200m_get_rate(struct clk *clk)
818{
819 return clk_get_rate(clk->parent) / 2;
820}
821
822static struct clk pll2_200m = {
823 .parent = &pll2_pfd_400m,
824 .get_rate = pll2_200m_get_rate,
825};
826
827static unsigned long pll3_120m_get_rate(struct clk *clk)
828{
829 return clk_get_rate(clk->parent) / 4;
830}
831
832static struct clk pll3_120m = {
833 .parent = &pll3_usb_otg,
834 .get_rate = pll3_120m_get_rate,
835};
836
837static unsigned long pll3_80m_get_rate(struct clk *clk)
838{
839 return clk_get_rate(clk->parent) / 6;
840}
841
842static struct clk pll3_80m = {
843 .parent = &pll3_usb_otg,
844 .get_rate = pll3_80m_get_rate,
845};
846
847static unsigned long pll3_60m_get_rate(struct clk *clk)
848{
849 return clk_get_rate(clk->parent) / 8;
850}
851
852static struct clk pll3_60m = {
853 .parent = &pll3_usb_otg,
854 .get_rate = pll3_60m_get_rate,
855};
856
857static int pll1_sw_clk_set_parent(struct clk *clk, struct clk *parent)
858{
859 u32 val = readl_relaxed(CCSR);
860
861 if (parent == &pll1_sys) {
862 val &= ~BM_CCSR_PLL1_SW_SEL;
863 val &= ~BM_CCSR_STEP_SEL;
864 } else if (parent == &osc_clk) {
865 val |= BM_CCSR_PLL1_SW_SEL;
866 val &= ~BM_CCSR_STEP_SEL;
867 } else if (parent == &pll2_pfd_400m) {
868 val |= BM_CCSR_PLL1_SW_SEL;
869 val |= BM_CCSR_STEP_SEL;
870 } else {
871 return -EINVAL;
872 }
873
874 writel_relaxed(val, CCSR);
875
876 return 0;
877}
878
879static struct clk pll1_sw_clk = {
880 .parent = &pll1_sys,
881 .set_parent = pll1_sw_clk_set_parent,
882};
883
884static void calc_pred_podf_dividers(u32 div, u32 *pred, u32 *podf)
885{
886 u32 min_pred, temp_pred, old_err, err;
887
888 if (div >= 512) {
889 *pred = 8;
890 *podf = 64;
891 } else if (div >= 8) {
892 min_pred = (div - 1) / 64 + 1;
893 old_err = 8;
894 for (temp_pred = 8; temp_pred >= min_pred; temp_pred--) {
895 err = div % temp_pred;
896 if (err == 0) {
897 *pred = temp_pred;
898 break;
899 }
900 err = temp_pred - err;
901 if (err < old_err) {
902 old_err = err;
903 *pred = temp_pred;
904 }
905 }
906 *podf = (div + *pred - 1) / *pred;
907 } else if (div < 8) {
908 *pred = div;
909 *podf = 1;
910 }
911}
912
913static int _clk_enable(struct clk *clk)
914{
915 u32 reg;
916 reg = readl_relaxed(clk->enable_reg);
917 reg |= 0x3 << clk->enable_shift;
918 writel_relaxed(reg, clk->enable_reg);
919
920 return 0;
921}
922
923static void _clk_disable(struct clk *clk)
924{
925 u32 reg;
926 reg = readl_relaxed(clk->enable_reg);
927 reg &= ~(0x3 << clk->enable_shift);
928 writel_relaxed(reg, clk->enable_reg);
929}
930
931struct divider {
932 struct clk *clk;
933 void __iomem *reg;
934 u32 bp_pred;
935 u32 bm_pred;
936 u32 bp_podf;
937 u32 bm_podf;
938};
939
940#define DEF_CLK_DIV1(d, c, r, b) \
941 static struct divider d = { \
942 .clk = c, \
943 .reg = r, \
944 .bp_podf = BP_##r##_##b##_PODF, \
945 .bm_podf = BM_##r##_##b##_PODF, \
946 }
947
948DEF_CLK_DIV1(arm_div, &arm_clk, CACRR, ARM);
949DEF_CLK_DIV1(ipg_div, &ipg_clk, CBCDR, IPG);
950DEF_CLK_DIV1(ahb_div, &ahb_clk, CBCDR, AHB);
951DEF_CLK_DIV1(axi_div, &axi_clk, CBCDR, AXI);
952DEF_CLK_DIV1(mmdc_ch0_axi_div, &mmdc_ch0_axi_clk, CBCDR, MMDC_CH0_AXI);
953DEF_CLK_DIV1(mmdc_ch1_axi_div, &mmdc_ch1_axi_clk, CBCDR, MMDC_CH1_AXI);
954DEF_CLK_DIV1(periph_clk2_div, &periph_clk2_clk, CBCDR, PERIPH_CLK2);
955DEF_CLK_DIV1(periph2_clk2_div, &periph2_clk2_clk, CBCDR, PERIPH2_CLK2);
956DEF_CLK_DIV1(gpu2d_core_div, &gpu2d_core_clk, CBCMR, GPU2D_CORE);
957DEF_CLK_DIV1(gpu3d_core_div, &gpu3d_core_clk, CBCMR, GPU3D_CORE);
958DEF_CLK_DIV1(gpu3d_shader_div, &gpu3d_shader_clk, CBCMR, GPU3D_SHADER);
959DEF_CLK_DIV1(ipg_perclk_div, &ipg_perclk, CSCMR1, PERCLK);
960DEF_CLK_DIV1(emi_div, &emi_clk, CSCMR1, EMI);
961DEF_CLK_DIV1(emi_slow_div, &emi_slow_clk, CSCMR1, EMI_SLOW);
962DEF_CLK_DIV1(can_div, &can1_clk, CSCMR2, CAN);
963DEF_CLK_DIV1(uart_div, &uart_clk, CSCDR1, UART);
964DEF_CLK_DIV1(usdhc1_div, &usdhc1_clk, CSCDR1, USDHC1);
965DEF_CLK_DIV1(usdhc2_div, &usdhc2_clk, CSCDR1, USDHC2);
966DEF_CLK_DIV1(usdhc3_div, &usdhc3_clk, CSCDR1, USDHC3);
967DEF_CLK_DIV1(usdhc4_div, &usdhc4_clk, CSCDR1, USDHC4);
968DEF_CLK_DIV1(vpu_div, &vpu_clk, CSCDR1, VPU_AXI);
969DEF_CLK_DIV1(hsi_tx_div, &hsi_tx_clk, CDCDR, HSI_TX);
970DEF_CLK_DIV1(ipu1_di0_pre_div, &ipu1_di0_pre_clk, CHSCCDR, IPU1_DI0_PRE);
971DEF_CLK_DIV1(ipu1_di1_pre_div, &ipu1_di1_pre_clk, CHSCCDR, IPU1_DI1_PRE);
972DEF_CLK_DIV1(ipu2_di0_pre_div, &ipu2_di0_pre_clk, CSCDR2, IPU2_DI0_PRE);
973DEF_CLK_DIV1(ipu2_di1_pre_div, &ipu2_di1_pre_clk, CSCDR2, IPU2_DI1_PRE);
974DEF_CLK_DIV1(ipu1_div, &ipu1_clk, CSCDR3, IPU1_HSP);
975DEF_CLK_DIV1(ipu2_div, &ipu2_clk, CSCDR3, IPU2_HSP);
976
977#define DEF_CLK_DIV2(d, c, r, b) \
978 static struct divider d = { \
979 .clk = c, \
980 .reg = r, \
981 .bp_pred = BP_##r##_##b##_PRED, \
982 .bm_pred = BM_##r##_##b##_PRED, \
983 .bp_podf = BP_##r##_##b##_PODF, \
984 .bm_podf = BM_##r##_##b##_PODF, \
985 }
986
987DEF_CLK_DIV2(ssi1_div, &ssi1_clk, CS1CDR, SSI1);
988DEF_CLK_DIV2(ssi3_div, &ssi3_clk, CS1CDR, SSI3);
989DEF_CLK_DIV2(esai_div, &esai_clk, CS1CDR, ESAI);
990DEF_CLK_DIV2(ssi2_div, &ssi2_clk, CS2CDR, SSI2);
991DEF_CLK_DIV2(enfc_div, &enfc_clk, CS2CDR, ENFC);
992DEF_CLK_DIV2(spdif_div, &spdif_clk, CDCDR, SPDIF);
993DEF_CLK_DIV2(asrc_serial_div, &asrc_serial_clk, CDCDR, ASRC_SERIAL);
994
995static struct divider *dividers[] = {
996 &arm_div,
997 &ipg_div,
998 &ahb_div,
999 &axi_div,
1000 &mmdc_ch0_axi_div,
1001 &mmdc_ch1_axi_div,
1002 &periph_clk2_div,
1003 &periph2_clk2_div,
1004 &gpu2d_core_div,
1005 &gpu3d_core_div,
1006 &gpu3d_shader_div,
1007 &ipg_perclk_div,
1008 &emi_div,
1009 &emi_slow_div,
1010 &can_div,
1011 &uart_div,
1012 &usdhc1_div,
1013 &usdhc2_div,
1014 &usdhc3_div,
1015 &usdhc4_div,
1016 &vpu_div,
1017 &hsi_tx_div,
1018 &ipu1_di0_pre_div,
1019 &ipu1_di1_pre_div,
1020 &ipu2_di0_pre_div,
1021 &ipu2_di1_pre_div,
1022 &ipu1_div,
1023 &ipu2_div,
1024 &ssi1_div,
1025 &ssi3_div,
1026 &esai_div,
1027 &ssi2_div,
1028 &enfc_div,
1029 &spdif_div,
1030 &asrc_serial_div,
1031};
1032
1033static unsigned long ldb_di_clk_get_rate(struct clk *clk)
1034{
1035 u32 val = readl_relaxed(CSCMR2);
1036
1037 val &= (clk == &ldb_di0_clk) ? BM_CSCMR2_LDB_DI0_IPU_DIV :
1038 BM_CSCMR2_LDB_DI1_IPU_DIV;
1039 if (val)
1040 return clk_get_rate(clk->parent) / 7;
1041 else
1042 return clk_get_rate(clk->parent) * 2 / 7;
1043}
1044
1045static int ldb_di_clk_set_rate(struct clk *clk, unsigned long rate)
1046{
1047 unsigned long parent_rate = clk_get_rate(clk->parent);
1048 u32 val = readl_relaxed(CSCMR2);
1049
1050 if (rate * 7 <= parent_rate + parent_rate / 20)
1051 val |= BM_CSCMR2_LDB_DI0_IPU_DIV;
1052 else
1053 val &= ~BM_CSCMR2_LDB_DI0_IPU_DIV;
1054
1055 writel_relaxed(val, CSCMR2);
1056
1057 return 0;
1058}
1059
1060static unsigned long ldb_di_clk_round_rate(struct clk *clk, unsigned long rate)
1061{
1062 unsigned long parent_rate = clk_get_rate(clk->parent);
1063
1064 if (rate * 7 <= parent_rate + parent_rate / 20)
1065 return parent_rate / 7;
1066 else
1067 return 2 * parent_rate / 7;
1068}
1069
1070static unsigned long _clk_get_rate(struct clk *clk)
1071{
1072 struct divider *d;
1073 u32 val, pred, podf;
1074 int i, num;
1075
1076 if (clk == &ldb_di0_clk || clk == &ldb_di1_clk)
1077 return ldb_di_clk_get_rate(clk);
1078
1079 num = ARRAY_SIZE(dividers);
1080 for (i = 0; i < num; i++)
1081 if (dividers[i]->clk == clk) {
1082 d = dividers[i];
1083 break;
1084 }
1085 if (i == num)
1086 return clk_get_rate(clk->parent);
1087
1088 val = readl_relaxed(d->reg);
1089 pred = ((val & d->bm_pred) >> d->bp_pred) + 1;
1090 podf = ((val & d->bm_podf) >> d->bp_podf) + 1;
1091
1092 return clk_get_rate(clk->parent) / (pred * podf);
1093}
1094
1095static int clk_busy_wait(struct clk *clk)
1096{
1097 int timeout = 0x100000;
1098 u32 bm;
1099
1100 if (clk == &axi_clk)
1101 bm = BM_CDHIPR_AXI_PODF_BUSY;
1102 else if (clk == &ahb_clk)
1103 bm = BM_CDHIPR_AHB_PODF_BUSY;
1104 else if (clk == &mmdc_ch0_axi_clk)
1105 bm = BM_CDHIPR_MMDC_CH0_PODF_BUSY;
1106 else if (clk == &periph_clk)
1107 bm = BM_CDHIPR_PERIPH_SEL_BUSY;
1108 else if (clk == &arm_clk)
1109 bm = BM_CDHIPR_ARM_PODF_BUSY;
1110 else
1111 return -EINVAL;
1112
1113 while ((readl_relaxed(CDHIPR) & bm) && --timeout)
1114 cpu_relax();
1115
1116 if (unlikely(!timeout))
1117 return -EBUSY;
1118
1119 return 0;
1120}
1121
1122static int _clk_set_rate(struct clk *clk, unsigned long rate)
1123{
1124 unsigned long parent_rate = clk_get_rate(clk->parent);
1125 struct divider *d;
1126 u32 val, div, max_div, pred = 0, podf;
1127 int i, num;
1128
1129 if (clk == &ldb_di0_clk || clk == &ldb_di1_clk)
1130 return ldb_di_clk_set_rate(clk, rate);
1131
1132 num = ARRAY_SIZE(dividers);
1133 for (i = 0; i < num; i++)
1134 if (dividers[i]->clk == clk) {
1135 d = dividers[i];
1136 break;
1137 }
1138 if (i == num)
1139 return -EINVAL;
1140
1141 max_div = ((d->bm_pred >> d->bp_pred) + 1) *
1142 ((d->bm_pred >> d->bp_pred) + 1);
1143
1144 div = parent_rate / rate;
1145 if (div == 0)
1146 div++;
1147
1148 if ((parent_rate / div != rate) || div > max_div)
1149 return -EINVAL;
1150
1151 if (d->bm_pred) {
1152 calc_pred_podf_dividers(div, &pred, &podf);
1153 } else {
1154 pred = 1;
1155 podf = div;
1156 }
1157
1158 val = readl_relaxed(d->reg);
1159 val &= ~(d->bm_pred | d->bm_podf);
1160 val |= (pred - 1) << d->bp_pred | (podf - 1) << d->bp_podf;
1161 writel_relaxed(val, d->reg);
1162
1163 if (clk == &axi_clk || clk == &ahb_clk ||
1164 clk == &mmdc_ch0_axi_clk || clk == &arm_clk)
1165 return clk_busy_wait(clk);
1166
1167 return 0;
1168}
1169
1170static unsigned long _clk_round_rate(struct clk *clk, unsigned long rate)
1171{
1172 unsigned long parent_rate = clk_get_rate(clk->parent);
1173 u32 div = parent_rate / rate;
1174 u32 div_max, pred = 0, podf;
1175 struct divider *d;
1176 int i, num;
1177
1178 if (clk == &ldb_di0_clk || clk == &ldb_di1_clk)
1179 return ldb_di_clk_round_rate(clk, rate);
1180
1181 num = ARRAY_SIZE(dividers);
1182 for (i = 0; i < num; i++)
1183 if (dividers[i]->clk == clk) {
1184 d = dividers[i];
1185 break;
1186 }
1187 if (i == num)
1188 return -EINVAL;
1189
1190 if (div == 0 || parent_rate % rate)
1191 div++;
1192
1193 if (d->bm_pred) {
1194 calc_pred_podf_dividers(div, &pred, &podf);
1195 div = pred * podf;
1196 } else {
1197 div_max = (d->bm_podf >> d->bp_podf) + 1;
1198 if (div > div_max)
1199 div = div_max;
1200 }
1201
1202 return parent_rate / div;
1203}
1204
1205struct multiplexer {
1206 struct clk *clk;
1207 void __iomem *reg;
1208 u32 bp;
1209 u32 bm;
1210 int pnum;
1211 struct clk *parents[];
1212};
1213
1214static struct multiplexer axi_mux = {
1215 .clk = &axi_clk,
1216 .reg = CBCDR,
1217 .bp = BP_CBCDR_AXI_SEL,
1218 .bm = BM_CBCDR_AXI_SEL,
1219 .parents = {
1220 &periph_clk,
1221 &pll2_pfd_400m,
1222 &pll3_pfd_540m,
1223 NULL
1224 },
1225};
1226
1227static struct multiplexer periph_mux = {
1228 .clk = &periph_clk,
1229 .reg = CBCDR,
1230 .bp = BP_CBCDR_PERIPH_CLK_SEL,
1231 .bm = BM_CBCDR_PERIPH_CLK_SEL,
1232 .parents = {
1233 &periph_pre_clk,
1234 &periph_clk2_clk,
1235 NULL
1236 },
1237};
1238
1239static struct multiplexer periph_pre_mux = {
1240 .clk = &periph_pre_clk,
1241 .reg = CBCMR,
1242 .bp = BP_CBCMR_PRE_PERIPH_CLK_SEL,
1243 .bm = BM_CBCMR_PRE_PERIPH_CLK_SEL,
1244 .parents = {
1245 &pll2_bus,
1246 &pll2_pfd_400m,
1247 &pll2_pfd_352m,
1248 &pll2_200m,
1249 NULL
1250 },
1251};
1252
1253static struct multiplexer periph_clk2_mux = {
1254 .clk = &periph_clk2_clk,
1255 .reg = CBCMR,
1256 .bp = BP_CBCMR_PERIPH_CLK2_SEL,
1257 .bm = BM_CBCMR_PERIPH_CLK2_SEL,
1258 .parents = {
1259 &pll3_usb_otg,
1260 &osc_clk,
1261 NULL
1262 },
1263};
1264
1265static struct multiplexer periph2_mux = {
1266 .clk = &periph2_clk,
1267 .reg = CBCDR,
1268 .bp = BP_CBCDR_PERIPH2_CLK_SEL,
1269 .bm = BM_CBCDR_PERIPH2_CLK_SEL,
1270 .parents = {
1271 &periph2_pre_clk,
1272 &periph2_clk2_clk,
1273 NULL
1274 },
1275};
1276
1277static struct multiplexer periph2_pre_mux = {
1278 .clk = &periph2_pre_clk,
1279 .reg = CBCMR,
1280 .bp = BP_CBCMR_PRE_PERIPH2_CLK_SEL,
1281 .bm = BM_CBCMR_PRE_PERIPH2_CLK_SEL,
1282 .parents = {
1283 &pll2_bus,
1284 &pll2_pfd_400m,
1285 &pll2_pfd_352m,
1286 &pll2_200m,
1287 NULL
1288 },
1289};
1290
1291static struct multiplexer periph2_clk2_mux = {
1292 .clk = &periph2_clk2_clk,
1293 .reg = CBCMR,
1294 .bp = BP_CBCMR_PERIPH2_CLK2_SEL,
1295 .bm = BM_CBCMR_PERIPH2_CLK2_SEL,
1296 .parents = {
1297 &pll3_usb_otg,
1298 &osc_clk,
1299 NULL
1300 },
1301};
1302
1303static struct multiplexer gpu2d_axi_mux = {
1304 .clk = &gpu2d_axi_clk,
1305 .reg = CBCMR,
1306 .bp = BP_CBCMR_GPU2D_AXI_SEL,
1307 .bm = BM_CBCMR_GPU2D_AXI_SEL,
1308 .parents = {
1309 &axi_clk,
1310 &ahb_clk,
1311 NULL
1312 },
1313};
1314
1315static struct multiplexer gpu3d_axi_mux = {
1316 .clk = &gpu3d_axi_clk,
1317 .reg = CBCMR,
1318 .bp = BP_CBCMR_GPU3D_AXI_SEL,
1319 .bm = BM_CBCMR_GPU3D_AXI_SEL,
1320 .parents = {
1321 &axi_clk,
1322 &ahb_clk,
1323 NULL
1324 },
1325};
1326
1327static struct multiplexer gpu3d_core_mux = {
1328 .clk = &gpu3d_core_clk,
1329 .reg = CBCMR,
1330 .bp = BP_CBCMR_GPU3D_CORE_SEL,
1331 .bm = BM_CBCMR_GPU3D_CORE_SEL,
1332 .parents = {
1333 &mmdc_ch0_axi_clk,
1334 &pll3_usb_otg,
1335 &pll2_pfd_594m,
1336 &pll2_pfd_400m,
1337 NULL
1338 },
1339};
1340
1341static struct multiplexer gpu3d_shader_mux = {
1342 .clk = &gpu3d_shader_clk,
1343 .reg = CBCMR,
1344 .bp = BP_CBCMR_GPU3D_SHADER_SEL,
1345 .bm = BM_CBCMR_GPU3D_SHADER_SEL,
1346 .parents = {
1347 &mmdc_ch0_axi_clk,
1348 &pll3_usb_otg,
1349 &pll2_pfd_594m,
1350 &pll3_pfd_720m,
1351 NULL
1352 },
1353};
1354
1355static struct multiplexer pcie_axi_mux = {
1356 .clk = &pcie_clk,
1357 .reg = CBCMR,
1358 .bp = BP_CBCMR_PCIE_AXI_SEL,
1359 .bm = BM_CBCMR_PCIE_AXI_SEL,
1360 .parents = {
1361 &axi_clk,
1362 &ahb_clk,
1363 NULL
1364 },
1365};
1366
1367static struct multiplexer vdo_axi_mux = {
1368 .clk = &vdo_axi_clk,
1369 .reg = CBCMR,
1370 .bp = BP_CBCMR_VDO_AXI_SEL,
1371 .bm = BM_CBCMR_VDO_AXI_SEL,
1372 .parents = {
1373 &axi_clk,
1374 &ahb_clk,
1375 NULL
1376 },
1377};
1378
1379static struct multiplexer vpu_axi_mux = {
1380 .clk = &vpu_clk,
1381 .reg = CBCMR,
1382 .bp = BP_CBCMR_VPU_AXI_SEL,
1383 .bm = BM_CBCMR_VPU_AXI_SEL,
1384 .parents = {
1385 &axi_clk,
1386 &pll2_pfd_400m,
1387 &pll2_pfd_352m,
1388 NULL
1389 },
1390};
1391
1392static struct multiplexer gpu2d_core_mux = {
1393 .clk = &gpu2d_core_clk,
1394 .reg = CBCMR,
1395 .bp = BP_CBCMR_GPU2D_CORE_SEL,
1396 .bm = BM_CBCMR_GPU2D_CORE_SEL,
1397 .parents = {
1398 &axi_clk,
1399 &pll3_usb_otg,
1400 &pll2_pfd_352m,
1401 &pll2_pfd_400m,
1402 NULL
1403 },
1404};
1405
1406#define DEF_SSI_MUX(id) \
1407 static struct multiplexer ssi##id##_mux = { \
1408 .clk = &ssi##id##_clk, \
1409 .reg = CSCMR1, \
1410 .bp = BP_CSCMR1_SSI##id##_SEL, \
1411 .bm = BM_CSCMR1_SSI##id##_SEL, \
1412 .parents = { \
1413 &pll3_pfd_508m, \
1414 &pll3_pfd_454m, \
1415 &pll4_audio, \
1416 NULL \
1417 }, \
1418 }
1419
1420DEF_SSI_MUX(1);
1421DEF_SSI_MUX(2);
1422DEF_SSI_MUX(3);
1423
1424#define DEF_USDHC_MUX(id) \
1425 static struct multiplexer usdhc##id##_mux = { \
1426 .clk = &usdhc##id##_clk, \
1427 .reg = CSCMR1, \
1428 .bp = BP_CSCMR1_USDHC##id##_SEL, \
1429 .bm = BM_CSCMR1_USDHC##id##_SEL, \
1430 .parents = { \
1431 &pll2_pfd_400m, \
1432 &pll2_pfd_352m, \
1433 NULL \
1434 }, \
1435 }
1436
1437DEF_USDHC_MUX(1);
1438DEF_USDHC_MUX(2);
1439DEF_USDHC_MUX(3);
1440DEF_USDHC_MUX(4);
1441
1442static struct multiplexer emi_mux = {
1443 .clk = &emi_clk,
1444 .reg = CSCMR1,
1445 .bp = BP_CSCMR1_EMI_SEL,
1446 .bm = BM_CSCMR1_EMI_SEL,
1447 .parents = {
1448 &axi_clk,
1449 &pll3_usb_otg,
1450 &pll2_pfd_400m,
1451 &pll2_pfd_352m,
1452 NULL
1453 },
1454};
1455
1456static struct multiplexer emi_slow_mux = {
1457 .clk = &emi_slow_clk,
1458 .reg = CSCMR1,
1459 .bp = BP_CSCMR1_EMI_SLOW_SEL,
1460 .bm = BM_CSCMR1_EMI_SLOW_SEL,
1461 .parents = {
1462 &axi_clk,
1463 &pll3_usb_otg,
1464 &pll2_pfd_400m,
1465 &pll2_pfd_352m,
1466 NULL
1467 },
1468};
1469
1470static struct multiplexer esai_mux = {
1471 .clk = &esai_clk,
1472 .reg = CSCMR2,
1473 .bp = BP_CSCMR2_ESAI_SEL,
1474 .bm = BM_CSCMR2_ESAI_SEL,
1475 .parents = {
1476 &pll4_audio,
1477 &pll3_pfd_508m,
1478 &pll3_pfd_454m,
1479 &pll3_usb_otg,
1480 NULL
1481 },
1482};
1483
1484#define DEF_LDB_DI_MUX(id) \
1485 static struct multiplexer ldb_di##id##_mux = { \
1486 .clk = &ldb_di##id##_clk, \
1487 .reg = CS2CDR, \
1488 .bp = BP_CS2CDR_LDB_DI##id##_SEL, \
1489 .bm = BM_CS2CDR_LDB_DI##id##_SEL, \
1490 .parents = { \
1491 &pll5_video, \
1492 &pll2_pfd_352m, \
1493 &pll2_pfd_400m, \
1494 &pll3_pfd_540m, \
1495 &pll3_usb_otg, \
1496 NULL \
1497 }, \
1498 }
1499
1500DEF_LDB_DI_MUX(0);
1501DEF_LDB_DI_MUX(1);
1502
1503static struct multiplexer enfc_mux = {
1504 .clk = &enfc_clk,
1505 .reg = CS2CDR,
1506 .bp = BP_CS2CDR_ENFC_SEL,
1507 .bm = BM_CS2CDR_ENFC_SEL,
1508 .parents = {
1509 &pll2_pfd_352m,
1510 &pll2_bus,
1511 &pll3_usb_otg,
1512 &pll2_pfd_400m,
1513 NULL
1514 },
1515};
1516
1517static struct multiplexer spdif_mux = {
1518 .clk = &spdif_clk,
1519 .reg = CDCDR,
1520 .bp = BP_CDCDR_SPDIF_SEL,
1521 .bm = BM_CDCDR_SPDIF_SEL,
1522 .parents = {
1523 &pll4_audio,
1524 &pll3_pfd_508m,
1525 &pll3_pfd_454m,
1526 &pll3_usb_otg,
1527 NULL
1528 },
1529};
1530
1531static struct multiplexer asrc_serial_mux = {
1532 .clk = &asrc_serial_clk,
1533 .reg = CDCDR,
1534 .bp = BP_CDCDR_ASRC_SERIAL_SEL,
1535 .bm = BM_CDCDR_ASRC_SERIAL_SEL,
1536 .parents = {
1537 &pll4_audio,
1538 &pll3_pfd_508m,
1539 &pll3_pfd_454m,
1540 &pll3_usb_otg,
1541 NULL
1542 },
1543};
1544
1545static struct multiplexer hsi_tx_mux = {
1546 .clk = &hsi_tx_clk,
1547 .reg = CDCDR,
1548 .bp = BP_CDCDR_HSI_TX_SEL,
1549 .bm = BM_CDCDR_HSI_TX_SEL,
1550 .parents = {
1551 &pll3_120m,
1552 &pll2_pfd_400m,
1553 NULL
1554 },
1555};
1556
1557#define DEF_IPU_DI_PRE_MUX(r, i, d) \
1558 static struct multiplexer ipu##i##_di##d##_pre_mux = { \
1559 .clk = &ipu##i##_di##d##_pre_clk, \
1560 .reg = r, \
1561 .bp = BP_##r##_IPU##i##_DI##d##_PRE_SEL, \
1562 .bm = BM_##r##_IPU##i##_DI##d##_PRE_SEL, \
1563 .parents = { \
1564 &mmdc_ch0_axi_clk, \
1565 &pll3_usb_otg, \
1566 &pll5_video, \
1567 &pll2_pfd_352m, \
1568 &pll2_pfd_400m, \
1569 &pll3_pfd_540m, \
1570 NULL \
1571 }, \
1572 }
1573
1574DEF_IPU_DI_PRE_MUX(CHSCCDR, 1, 0);
1575DEF_IPU_DI_PRE_MUX(CHSCCDR, 1, 1);
1576DEF_IPU_DI_PRE_MUX(CSCDR2, 2, 0);
1577DEF_IPU_DI_PRE_MUX(CSCDR2, 2, 1);
1578
1579#define DEF_IPU_DI_MUX(r, i, d) \
1580 static struct multiplexer ipu##i##_di##d##_mux = { \
1581 .clk = &ipu##i##_di##d##_clk, \
1582 .reg = r, \
1583 .bp = BP_##r##_IPU##i##_DI##d##_SEL, \
1584 .bm = BM_##r##_IPU##i##_DI##d##_SEL, \
1585 .parents = { \
1586 &ipu##i##_di##d##_pre_clk, \
1587 &dummy_clk, \
1588 &dummy_clk, \
1589 &ldb_di0_clk, \
1590 &ldb_di1_clk, \
1591 NULL \
1592 }, \
1593 }
1594
1595DEF_IPU_DI_MUX(CHSCCDR, 1, 0);
1596DEF_IPU_DI_MUX(CHSCCDR, 1, 1);
1597DEF_IPU_DI_MUX(CSCDR2, 2, 0);
1598DEF_IPU_DI_MUX(CSCDR2, 2, 1);
1599
1600#define DEF_IPU_MUX(id) \
1601 static struct multiplexer ipu##id##_mux = { \
1602 .clk = &ipu##id##_clk, \
1603 .reg = CSCDR3, \
1604 .bp = BP_CSCDR3_IPU##id##_HSP_SEL, \
1605 .bm = BM_CSCDR3_IPU##id##_HSP_SEL, \
1606 .parents = { \
1607 &mmdc_ch0_axi_clk, \
1608 &pll2_pfd_400m, \
1609 &pll3_120m, \
1610 &pll3_pfd_540m, \
1611 NULL \
1612 }, \
1613 }
1614
1615DEF_IPU_MUX(1);
1616DEF_IPU_MUX(2);
1617
1618static struct multiplexer *multiplexers[] = {
1619 &axi_mux,
1620 &periph_mux,
1621 &periph_pre_mux,
1622 &periph_clk2_mux,
1623 &periph2_mux,
1624 &periph2_pre_mux,
1625 &periph2_clk2_mux,
1626 &gpu2d_axi_mux,
1627 &gpu3d_axi_mux,
1628 &gpu3d_core_mux,
1629 &gpu3d_shader_mux,
1630 &pcie_axi_mux,
1631 &vdo_axi_mux,
1632 &vpu_axi_mux,
1633 &gpu2d_core_mux,
1634 &ssi1_mux,
1635 &ssi2_mux,
1636 &ssi3_mux,
1637 &usdhc1_mux,
1638 &usdhc2_mux,
1639 &usdhc3_mux,
1640 &usdhc4_mux,
1641 &emi_mux,
1642 &emi_slow_mux,
1643 &esai_mux,
1644 &ldb_di0_mux,
1645 &ldb_di1_mux,
1646 &enfc_mux,
1647 &spdif_mux,
1648 &asrc_serial_mux,
1649 &hsi_tx_mux,
1650 &ipu1_di0_pre_mux,
1651 &ipu1_di0_mux,
1652 &ipu1_di1_pre_mux,
1653 &ipu1_di1_mux,
1654 &ipu2_di0_pre_mux,
1655 &ipu2_di0_mux,
1656 &ipu2_di1_pre_mux,
1657 &ipu2_di1_mux,
1658 &ipu1_mux,
1659 &ipu2_mux,
1660};
1661
1662static int _clk_set_parent(struct clk *clk, struct clk *parent)
1663{
1664 struct multiplexer *m;
1665 int i, num;
1666 u32 val;
1667
1668 num = ARRAY_SIZE(multiplexers);
1669 for (i = 0; i < num; i++)
1670 if (multiplexers[i]->clk == clk) {
1671 m = multiplexers[i];
1672 break;
1673 }
1674 if (i == num)
1675 return -EINVAL;
1676
1677 i = 0;
1678 while (m->parents[i]) {
1679 if (parent == m->parents[i])
1680 break;
1681 i++;
1682 }
1683 if (!m->parents[i])
1684 return -EINVAL;
1685
1686 val = readl_relaxed(m->reg);
1687 val &= ~m->bm;
1688 val |= i << m->bp;
1689 writel_relaxed(val, m->reg);
1690
1691 if (clk == &periph_clk)
1692 return clk_busy_wait(clk);
1693
1694 return 0;
1695}
1696
1697#define DEF_NG_CLK(name, p) \
1698 static struct clk name = { \
1699 .get_rate = _clk_get_rate, \
1700 .set_rate = _clk_set_rate, \
1701 .round_rate = _clk_round_rate, \
1702 .set_parent = _clk_set_parent, \
1703 .parent = p, \
1704 }
1705
1706DEF_NG_CLK(periph_clk2_clk, &osc_clk);
1707DEF_NG_CLK(periph_pre_clk, &pll2_bus);
1708DEF_NG_CLK(periph_clk, &periph_pre_clk);
1709DEF_NG_CLK(periph2_clk2_clk, &osc_clk);
1710DEF_NG_CLK(periph2_pre_clk, &pll2_bus);
1711DEF_NG_CLK(periph2_clk, &periph2_pre_clk);
1712DEF_NG_CLK(axi_clk, &periph_clk);
1713DEF_NG_CLK(emi_clk, &axi_clk);
1714DEF_NG_CLK(arm_clk, &pll1_sw_clk);
1715DEF_NG_CLK(ahb_clk, &periph_clk);
1716DEF_NG_CLK(ipg_clk, &ahb_clk);
1717DEF_NG_CLK(ipg_perclk, &ipg_clk);
1718DEF_NG_CLK(ipu1_di0_pre_clk, &pll3_pfd_540m);
1719DEF_NG_CLK(ipu1_di1_pre_clk, &pll3_pfd_540m);
1720DEF_NG_CLK(ipu2_di0_pre_clk, &pll3_pfd_540m);
1721DEF_NG_CLK(ipu2_di1_pre_clk, &pll3_pfd_540m);
1722DEF_NG_CLK(asrc_serial_clk, &pll3_usb_otg);
1723
1724#define DEF_CLK(name, er, es, p, s) \
1725 static struct clk name = { \
1726 .enable_reg = er, \
1727 .enable_shift = es, \
1728 .enable = _clk_enable, \
1729 .disable = _clk_disable, \
1730 .get_rate = _clk_get_rate, \
1731 .set_rate = _clk_set_rate, \
1732 .round_rate = _clk_round_rate, \
1733 .set_parent = _clk_set_parent, \
1734 .parent = p, \
1735 .secondary = s, \
1736 }
1737
1738DEF_CLK(aips_tz1_clk, CCGR0, CG0, &ahb_clk, NULL);
1739DEF_CLK(aips_tz2_clk, CCGR0, CG1, &ahb_clk, NULL);
1740DEF_CLK(apbh_dma_clk, CCGR0, CG2, &ahb_clk, NULL);
1741DEF_CLK(asrc_clk, CCGR0, CG3, &pll4_audio, NULL);
1742DEF_CLK(can1_serial_clk, CCGR0, CG8, &pll3_usb_otg, NULL);
1743DEF_CLK(can1_clk, CCGR0, CG7, &pll3_usb_otg, &can1_serial_clk);
1744DEF_CLK(can2_serial_clk, CCGR0, CG10, &pll3_usb_otg, NULL);
1745DEF_CLK(can2_clk, CCGR0, CG9, &pll3_usb_otg, &can2_serial_clk);
1746DEF_CLK(ecspi1_clk, CCGR1, CG0, &pll3_60m, NULL);
1747DEF_CLK(ecspi2_clk, CCGR1, CG1, &pll3_60m, NULL);
1748DEF_CLK(ecspi3_clk, CCGR1, CG2, &pll3_60m, NULL);
1749DEF_CLK(ecspi4_clk, CCGR1, CG3, &pll3_60m, NULL);
1750DEF_CLK(ecspi5_clk, CCGR1, CG4, &pll3_60m, NULL);
1751DEF_CLK(enet_clk, CCGR1, CG5, &ipg_clk, NULL);
1752DEF_CLK(esai_clk, CCGR1, CG8, &pll3_usb_otg, NULL);
1753DEF_CLK(gpt_serial_clk, CCGR1, CG11, &ipg_perclk, NULL);
1754DEF_CLK(gpt_clk, CCGR1, CG10, &ipg_perclk, &gpt_serial_clk);
1755DEF_CLK(gpu2d_core_clk, CCGR1, CG12, &pll2_pfd_352m, &gpu2d_axi_clk);
1756DEF_CLK(gpu3d_core_clk, CCGR1, CG13, &pll2_pfd_594m, &gpu3d_axi_clk);
1757DEF_CLK(gpu3d_shader_clk, CCGR1, CG13, &pll3_pfd_720m, &gpu3d_axi_clk);
1758DEF_CLK(hdmi_iahb_clk, CCGR2, CG0, &ahb_clk, NULL);
1759DEF_CLK(hdmi_isfr_clk, CCGR2, CG2, &pll3_pfd_540m, &hdmi_iahb_clk);
1760DEF_CLK(i2c1_clk, CCGR2, CG3, &ipg_perclk, NULL);
1761DEF_CLK(i2c2_clk, CCGR2, CG4, &ipg_perclk, NULL);
1762DEF_CLK(i2c3_clk, CCGR2, CG5, &ipg_perclk, NULL);
1763DEF_CLK(iim_clk, CCGR2, CG6, &ipg_clk, NULL);
1764DEF_CLK(enfc_clk, CCGR2, CG7, &pll2_pfd_352m, NULL);
1765DEF_CLK(ipu1_clk, CCGR3, CG0, &mmdc_ch0_axi_clk, NULL);
1766DEF_CLK(ipu1_di0_clk, CCGR3, CG1, &ipu1_di0_pre_clk, NULL);
1767DEF_CLK(ipu1_di1_clk, CCGR3, CG2, &ipu1_di1_pre_clk, NULL);
1768DEF_CLK(ipu2_clk, CCGR3, CG3, &mmdc_ch0_axi_clk, NULL);
1769DEF_CLK(ipu2_di0_clk, CCGR3, CG4, &ipu2_di0_pre_clk, NULL);
1770DEF_CLK(ipu2_di1_clk, CCGR3, CG5, &ipu2_di1_pre_clk, NULL);
1771DEF_CLK(ldb_di0_clk, CCGR3, CG6, &pll3_pfd_540m, NULL);
1772DEF_CLK(ldb_di1_clk, CCGR3, CG7, &pll3_pfd_540m, NULL);
1773DEF_CLK(hsi_tx_clk, CCGR3, CG8, &pll2_pfd_400m, NULL);
1774DEF_CLK(mlb_clk, CCGR3, CG9, &pll6_mlb, NULL);
1775DEF_CLK(mmdc_ch0_ipg_clk, CCGR3, CG12, &ipg_clk, NULL);
1776DEF_CLK(mmdc_ch0_axi_clk, CCGR3, CG10, &periph_clk, &mmdc_ch0_ipg_clk);
1777DEF_CLK(mmdc_ch1_ipg_clk, CCGR3, CG13, &ipg_clk, NULL);
1778DEF_CLK(mmdc_ch1_axi_clk, CCGR3, CG11, &periph2_clk, &mmdc_ch1_ipg_clk);
1779DEF_CLK(openvg_axi_clk, CCGR3, CG13, &axi_clk, NULL);
1780DEF_CLK(pwm1_clk, CCGR4, CG8, &ipg_perclk, NULL);
1781DEF_CLK(pwm2_clk, CCGR4, CG9, &ipg_perclk, NULL);
1782DEF_CLK(pwm3_clk, CCGR4, CG10, &ipg_perclk, NULL);
1783DEF_CLK(pwm4_clk, CCGR4, CG11, &ipg_perclk, NULL);
1784DEF_CLK(gpmi_bch_apb_clk, CCGR4, CG12, &usdhc3_clk, NULL);
1785DEF_CLK(gpmi_bch_clk, CCGR4, CG13, &usdhc4_clk, &gpmi_bch_apb_clk);
1786DEF_CLK(gpmi_apb_clk, CCGR4, CG15, &usdhc3_clk, &gpmi_bch_clk);
1787DEF_CLK(gpmi_io_clk, CCGR4, CG14, &enfc_clk, &gpmi_apb_clk);
1788DEF_CLK(sdma_clk, CCGR5, CG3, &ahb_clk, NULL);
1789DEF_CLK(spba_clk, CCGR5, CG6, &ipg_clk, NULL);
1790DEF_CLK(spdif_clk, CCGR5, CG7, &pll3_usb_otg, &spba_clk);
1791DEF_CLK(ssi1_clk, CCGR5, CG9, &pll3_pfd_508m, NULL);
1792DEF_CLK(ssi2_clk, CCGR5, CG10, &pll3_pfd_508m, NULL);
1793DEF_CLK(ssi3_clk, CCGR5, CG11, &pll3_pfd_508m, NULL);
1794DEF_CLK(uart_serial_clk, CCGR5, CG13, &pll3_usb_otg, NULL);
1795DEF_CLK(uart_clk, CCGR5, CG12, &pll3_80m, &uart_serial_clk);
1796DEF_CLK(usboh3_clk, CCGR6, CG0, &ipg_clk, NULL);
1797DEF_CLK(usdhc1_clk, CCGR6, CG1, &pll2_pfd_400m, NULL);
1798DEF_CLK(usdhc2_clk, CCGR6, CG2, &pll2_pfd_400m, NULL);
1799DEF_CLK(usdhc3_clk, CCGR6, CG3, &pll2_pfd_400m, NULL);
1800DEF_CLK(usdhc4_clk, CCGR6, CG4, &pll2_pfd_400m, NULL);
1801DEF_CLK(emi_slow_clk, CCGR6, CG5, &axi_clk, NULL);
1802DEF_CLK(vdo_axi_clk, CCGR6, CG6, &axi_clk, NULL);
1803DEF_CLK(vpu_clk, CCGR6, CG7, &axi_clk, NULL);
1804
1805static int pcie_clk_enable(struct clk *clk)
1806{
1807 u32 val;
1808
1809 val = readl_relaxed(PLL8_ENET);
1810 val |= BM_PLL_ENET_EN_PCIE;
1811 writel_relaxed(val, PLL8_ENET);
1812
1813 return _clk_enable(clk);
1814}
1815
1816static void pcie_clk_disable(struct clk *clk)
1817{
1818 u32 val;
1819
1820 _clk_disable(clk);
1821
1822 val = readl_relaxed(PLL8_ENET);
1823 val &= BM_PLL_ENET_EN_PCIE;
1824 writel_relaxed(val, PLL8_ENET);
1825}
1826
1827static struct clk pcie_clk = {
1828 .enable_reg = CCGR4,
1829 .enable_shift = CG0,
1830 .enable = pcie_clk_enable,
1831 .disable = pcie_clk_disable,
1832 .set_parent = _clk_set_parent,
1833 .parent = &axi_clk,
1834 .secondary = &pll8_enet,
1835};
1836
1837static int sata_clk_enable(struct clk *clk)
1838{
1839 u32 val;
1840
1841 val = readl_relaxed(PLL8_ENET);
1842 val |= BM_PLL_ENET_EN_SATA;
1843 writel_relaxed(val, PLL8_ENET);
1844
1845 return _clk_enable(clk);
1846}
1847
1848static void sata_clk_disable(struct clk *clk)
1849{
1850 u32 val;
1851
1852 _clk_disable(clk);
1853
1854 val = readl_relaxed(PLL8_ENET);
1855 val &= BM_PLL_ENET_EN_SATA;
1856 writel_relaxed(val, PLL8_ENET);
1857}
1858
1859static struct clk sata_clk = {
1860 .enable_reg = CCGR5,
1861 .enable_shift = CG2,
1862 .enable = sata_clk_enable,
1863 .disable = sata_clk_disable,
1864 .parent = &ipg_clk,
1865 .secondary = &pll8_enet,
1866};
1867
1868#define _REGISTER_CLOCK(d, n, c) \
1869 { \
1870 .dev_id = d, \
1871 .con_id = n, \
1872 .clk = &c, \
1873 }
1874
1875static struct clk_lookup lookups[] = {
1876 _REGISTER_CLOCK("2020000.uart", NULL, uart_clk),
1877 _REGISTER_CLOCK("21e8000.uart", NULL, uart_clk),
1878 _REGISTER_CLOCK("21ec000.uart", NULL, uart_clk),
1879 _REGISTER_CLOCK("21f0000.uart", NULL, uart_clk),
1880 _REGISTER_CLOCK("21f4000.uart", NULL, uart_clk),
1881 _REGISTER_CLOCK("2188000.enet", NULL, enet_clk),
1882 _REGISTER_CLOCK("2190000.usdhc", NULL, usdhc1_clk),
1883 _REGISTER_CLOCK("2194000.usdhc", NULL, usdhc2_clk),
1884 _REGISTER_CLOCK("2198000.usdhc", NULL, usdhc3_clk),
1885 _REGISTER_CLOCK("219c000.usdhc", NULL, usdhc4_clk),
1886 _REGISTER_CLOCK("21a0000.i2c", NULL, i2c1_clk),
1887 _REGISTER_CLOCK("21a4000.i2c", NULL, i2c2_clk),
1888 _REGISTER_CLOCK("21a8000.i2c", NULL, i2c3_clk),
1889 _REGISTER_CLOCK("2008000.ecspi", NULL, ecspi1_clk),
1890 _REGISTER_CLOCK("200c000.ecspi", NULL, ecspi2_clk),
1891 _REGISTER_CLOCK("2010000.ecspi", NULL, ecspi3_clk),
1892 _REGISTER_CLOCK("2014000.ecspi", NULL, ecspi4_clk),
1893 _REGISTER_CLOCK("2018000.ecspi", NULL, ecspi5_clk),
1894 _REGISTER_CLOCK("20ec000.sdma", NULL, sdma_clk),
1895 _REGISTER_CLOCK("20bc000.wdog", NULL, dummy_clk),
1896 _REGISTER_CLOCK("20c0000.wdog", NULL, dummy_clk),
1897 _REGISTER_CLOCK(NULL, "ckih", ckih_clk),
1898 _REGISTER_CLOCK(NULL, "ckil_clk", ckil_clk),
1899 _REGISTER_CLOCK(NULL, "aips_tz1_clk", aips_tz1_clk),
1900 _REGISTER_CLOCK(NULL, "aips_tz2_clk", aips_tz2_clk),
1901 _REGISTER_CLOCK(NULL, "asrc_clk", asrc_clk),
1902 _REGISTER_CLOCK(NULL, "can2_clk", can2_clk),
1903 _REGISTER_CLOCK(NULL, "hdmi_isfr_clk", hdmi_isfr_clk),
1904 _REGISTER_CLOCK(NULL, "iim_clk", iim_clk),
1905 _REGISTER_CLOCK(NULL, "mlb_clk", mlb_clk),
1906 _REGISTER_CLOCK(NULL, "openvg_axi_clk", openvg_axi_clk),
1907 _REGISTER_CLOCK(NULL, "pwm1_clk", pwm1_clk),
1908 _REGISTER_CLOCK(NULL, "pwm2_clk", pwm2_clk),
1909 _REGISTER_CLOCK(NULL, "pwm3_clk", pwm3_clk),
1910 _REGISTER_CLOCK(NULL, "pwm4_clk", pwm4_clk),
1911 _REGISTER_CLOCK(NULL, "gpmi_io_clk", gpmi_io_clk),
1912 _REGISTER_CLOCK(NULL, "usboh3_clk", usboh3_clk),
1913 _REGISTER_CLOCK(NULL, "sata_clk", sata_clk),
1914};
1915
1916int imx6q_set_lpm(enum mxc_cpu_pwr_mode mode)
1917{
1918 u32 val = readl_relaxed(CLPCR);
1919
1920 val &= ~BM_CLPCR_LPM;
1921 switch (mode) {
1922 case WAIT_CLOCKED:
1923 break;
1924 case WAIT_UNCLOCKED:
1925 val |= 0x1 << BP_CLPCR_LPM;
1926 break;
1927 case STOP_POWER_ON:
1928 val |= 0x2 << BP_CLPCR_LPM;
1929 break;
1930 case WAIT_UNCLOCKED_POWER_OFF:
1931 val |= 0x1 << BP_CLPCR_LPM;
1932 val &= ~BM_CLPCR_VSTBY;
1933 val &= ~BM_CLPCR_SBYOS;
1934 val |= BM_CLPCR_BYP_MMDC_CH1_LPM_HS;
1935 break;
1936 case STOP_POWER_OFF:
1937 val |= 0x2 << BP_CLPCR_LPM;
1938 val |= 0x3 << BP_CLPCR_STBY_COUNT;
1939 val |= BM_CLPCR_VSTBY;
1940 val |= BM_CLPCR_SBYOS;
1941 val |= BM_CLPCR_BYP_MMDC_CH1_LPM_HS;
1942 break;
1943 default:
1944 return -EINVAL;
1945 }
1946 writel_relaxed(val, CLPCR);
1947
1948 return 0;
1949}
1950
1951static struct map_desc imx6q_clock_desc[] = {
1952 imx_map_entry(MX6Q, CCM, MT_DEVICE),
1953 imx_map_entry(MX6Q, ANATOP, MT_DEVICE),
1954};
1955
1956int __init mx6q_clocks_init(void)
1957{
1958 struct device_node *np;
1959 void __iomem *base;
1960 int i, irq;
1961
1962 iotable_init(imx6q_clock_desc, ARRAY_SIZE(imx6q_clock_desc));
1963
1964 /* retrieve the freqency of fixed clocks from device tree */
1965 for_each_compatible_node(np, NULL, "fixed-clock") {
1966 u32 rate;
1967 if (of_property_read_u32(np, "clock-frequency", &rate))
1968 continue;
1969
1970 if (of_device_is_compatible(np, "fsl,imx-ckil"))
1971 external_low_reference = rate;
1972 else if (of_device_is_compatible(np, "fsl,imx-ckih1"))
1973 external_high_reference = rate;
1974 else if (of_device_is_compatible(np, "fsl,imx-osc"))
1975 oscillator_reference = rate;
1976 }
1977
1978 for (i = 0; i < ARRAY_SIZE(lookups); i++)
1979 clkdev_add(&lookups[i]);
1980
1981 /* only keep necessary clocks on */
1982 writel_relaxed(0x3 << CG0 | 0x3 << CG1 | 0x3 << CG2, CCGR0);
1983 writel_relaxed(0x3 << CG8 | 0x3 << CG9 | 0x3 << CG10, CCGR2);
1984 writel_relaxed(0x3 << CG10 | 0x3 << CG12, CCGR3);
1985 writel_relaxed(0x3 << CG4 | 0x3 << CG6 | 0x3 << CG7, CCGR4);
1986 writel_relaxed(0x3 << CG0, CCGR5);
1987 writel_relaxed(0, CCGR6);
1988 writel_relaxed(0, CCGR7);
1989
1990 clk_enable(&uart_clk);
1991 clk_enable(&mmdc_ch0_axi_clk);
1992
1993 clk_set_rate(&pll4_audio, FREQ_650M);
1994 clk_set_rate(&pll5_video, FREQ_650M);
1995 clk_set_parent(&ipu1_di0_clk, &ipu1_di0_pre_clk);
1996 clk_set_parent(&ipu1_di0_pre_clk, &pll5_video);
1997 clk_set_parent(&gpu3d_shader_clk, &pll2_pfd_594m);
1998 clk_set_rate(&gpu3d_shader_clk, FREQ_594M);
1999 clk_set_parent(&gpu3d_core_clk, &mmdc_ch0_axi_clk);
2000 clk_set_rate(&gpu3d_core_clk, FREQ_528M);
2001 clk_set_parent(&asrc_serial_clk, &pll3_usb_otg);
2002 clk_set_rate(&asrc_serial_clk, 1500000);
2003 clk_set_rate(&enfc_clk, 11000000);
2004
2005 np = of_find_compatible_node(NULL, NULL, "fsl,imx6q-gpt");
2006 base = of_iomap(np, 0);
2007 WARN_ON(!base);
2008 irq = irq_of_parse_and_map(np, 0);
2009 mxc_timer_init(&gpt_clk, base, irq);
2010
2011 return 0;
2012}
diff --git a/arch/arm/mach-imx/gpc.c b/arch/arm/mach-imx/gpc.c
new file mode 100644
index 000000000000..e1537f9e45b8
--- /dev/null
+++ b/arch/arm/mach-imx/gpc.c
@@ -0,0 +1,113 @@
1/*
2 * Copyright 2011 Freescale Semiconductor, Inc.
3 * Copyright 2011 Linaro Ltd.
4 *
5 * The code contained herein is licensed under the GNU General Public
6 * License. You may obtain a copy of the GNU General Public License
7 * Version 2 or later at the following locations:
8 *
9 * http://www.opensource.org/licenses/gpl-license.html
10 * http://www.gnu.org/copyleft/gpl.html
11 */
12
13#include <linux/io.h>
14#include <linux/irq.h>
15#include <linux/of.h>
16#include <linux/of_address.h>
17#include <linux/of_irq.h>
18#include <asm/hardware/gic.h>
19
20#define GPC_IMR1 0x008
21#define GPC_PGC_CPU_PDN 0x2a0
22
23#define IMR_NUM 4
24
25static void __iomem *gpc_base;
26static u32 gpc_wake_irqs[IMR_NUM];
27static u32 gpc_saved_imrs[IMR_NUM];
28
29void imx_gpc_pre_suspend(void)
30{
31 void __iomem *reg_imr1 = gpc_base + GPC_IMR1;
32 int i;
33
34 /* Tell GPC to power off ARM core when suspend */
35 writel_relaxed(0x1, gpc_base + GPC_PGC_CPU_PDN);
36
37 for (i = 0; i < IMR_NUM; i++) {
38 gpc_saved_imrs[i] = readl_relaxed(reg_imr1 + i * 4);
39 writel_relaxed(~gpc_wake_irqs[i], reg_imr1 + i * 4);
40 }
41}
42
43void imx_gpc_post_resume(void)
44{
45 void __iomem *reg_imr1 = gpc_base + GPC_IMR1;
46 int i;
47
48 /* Keep ARM core powered on for other low-power modes */
49 writel_relaxed(0x0, gpc_base + GPC_PGC_CPU_PDN);
50
51 for (i = 0; i < IMR_NUM; i++)
52 writel_relaxed(gpc_saved_imrs[i], reg_imr1 + i * 4);
53}
54
55static int imx_gpc_irq_set_wake(struct irq_data *d, unsigned int on)
56{
57 unsigned int idx = d->irq / 32 - 1;
58 u32 mask;
59
60 /* Sanity check for SPI irq */
61 if (d->irq < 32)
62 return -EINVAL;
63
64 mask = 1 << d->irq % 32;
65 gpc_wake_irqs[idx] = on ? gpc_wake_irqs[idx] | mask :
66 gpc_wake_irqs[idx] & ~mask;
67
68 return 0;
69}
70
71static void imx_gpc_irq_unmask(struct irq_data *d)
72{
73 void __iomem *reg;
74 u32 val;
75
76 /* Sanity check for SPI irq */
77 if (d->irq < 32)
78 return;
79
80 reg = gpc_base + GPC_IMR1 + (d->irq / 32 - 1) * 4;
81 val = readl_relaxed(reg);
82 val &= ~(1 << d->irq % 32);
83 writel_relaxed(val, reg);
84}
85
86static void imx_gpc_irq_mask(struct irq_data *d)
87{
88 void __iomem *reg;
89 u32 val;
90
91 /* Sanity check for SPI irq */
92 if (d->irq < 32)
93 return;
94
95 reg = gpc_base + GPC_IMR1 + (d->irq / 32 - 1) * 4;
96 val = readl_relaxed(reg);
97 val |= 1 << (d->irq % 32);
98 writel_relaxed(val, reg);
99}
100
101void __init imx_gpc_init(void)
102{
103 struct device_node *np;
104
105 np = of_find_compatible_node(NULL, NULL, "fsl,imx6q-gpc");
106 gpc_base = of_iomap(np, 0);
107 WARN_ON(!gpc_base);
108
109 /* Register GPC as the secondary interrupt controller behind GIC */
110 gic_arch_extn.irq_mask = imx_gpc_irq_mask;
111 gic_arch_extn.irq_unmask = imx_gpc_irq_unmask;
112 gic_arch_extn.irq_set_wake = imx_gpc_irq_set_wake;
113}
diff --git a/arch/arm/mach-imx/mmdc.c b/arch/arm/mach-imx/mmdc.c
new file mode 100644
index 000000000000..c461e98496c3
--- /dev/null
+++ b/arch/arm/mach-imx/mmdc.c
@@ -0,0 +1,72 @@
1/*
2 * Copyright 2011 Freescale Semiconductor, Inc.
3 * Copyright 2011 Linaro Ltd.
4 *
5 * The code contained herein is licensed under the GNU General Public
6 * License. You may obtain a copy of the GNU General Public License
7 * Version 2 or later at the following locations:
8 *
9 * http://www.opensource.org/licenses/gpl-license.html
10 * http://www.gnu.org/copyleft/gpl.html
11 */
12
13#include <linux/init.h>
14#include <linux/io.h>
15#include <linux/module.h>
16#include <linux/of.h>
17#include <linux/of_address.h>
18#include <linux/of_device.h>
19
20#define MMDC_MAPSR 0x404
21#define BP_MMDC_MAPSR_PSD 0
22#define BP_MMDC_MAPSR_PSS 4
23
24static int __devinit imx_mmdc_probe(struct platform_device *pdev)
25{
26 struct device_node *np = pdev->dev.of_node;
27 void __iomem *mmdc_base, *reg;
28 u32 val;
29 int timeout = 0x400;
30
31 mmdc_base = of_iomap(np, 0);
32 WARN_ON(!mmdc_base);
33
34 reg = mmdc_base + MMDC_MAPSR;
35
36 /* Enable automatic power saving */
37 val = readl_relaxed(reg);
38 val &= ~(1 << BP_MMDC_MAPSR_PSD);
39 writel_relaxed(val, reg);
40
41 /* Ensure it's successfully enabled */
42 while (!(readl_relaxed(reg) & 1 << BP_MMDC_MAPSR_PSS) && --timeout)
43 cpu_relax();
44
45 if (unlikely(!timeout)) {
46 pr_warn("%s: failed to enable automatic power saving\n",
47 __func__);
48 return -EBUSY;
49 }
50
51 return 0;
52}
53
54static struct of_device_id imx_mmdc_dt_ids[] = {
55 { .compatible = "fsl,imx6q-mmdc", },
56 { /* sentinel */ }
57};
58
59static struct platform_driver imx_mmdc_driver = {
60 .driver = {
61 .name = "imx-mmdc",
62 .owner = THIS_MODULE,
63 .of_match_table = imx_mmdc_dt_ids,
64 },
65 .probe = imx_mmdc_probe,
66};
67
68static int __init imx_mmdc_init(void)
69{
70 return platform_driver_register(&imx_mmdc_driver);
71}
72postcore_initcall(imx_mmdc_init);
diff --git a/arch/arm/mach-imx/src.c b/arch/arm/mach-imx/src.c
new file mode 100644
index 000000000000..36cacbd0dcc2
--- /dev/null
+++ b/arch/arm/mach-imx/src.c
@@ -0,0 +1,49 @@
1/*
2 * Copyright 2011 Freescale Semiconductor, Inc.
3 * Copyright 2011 Linaro Ltd.
4 *
5 * The code contained herein is licensed under the GNU General Public
6 * License. You may obtain a copy of the GNU General Public License
7 * Version 2 or later at the following locations:
8 *
9 * http://www.opensource.org/licenses/gpl-license.html
10 * http://www.gnu.org/copyleft/gpl.html
11 */
12
13#include <linux/init.h>
14#include <linux/io.h>
15#include <linux/of.h>
16#include <linux/of_address.h>
17#include <asm/unified.h>
18
19#define SRC_SCR 0x000
20#define SRC_GPR1 0x020
21#define BP_SRC_SCR_CORE1_RST 14
22#define BP_SRC_SCR_CORE1_ENABLE 22
23
24static void __iomem *src_base;
25
26void imx_enable_cpu(int cpu, bool enable)
27{
28 u32 mask, val;
29
30 mask = 1 << (BP_SRC_SCR_CORE1_ENABLE + cpu - 1);
31 val = readl_relaxed(src_base + SRC_SCR);
32 val = enable ? val | mask : val & ~mask;
33 writel_relaxed(val, src_base + SRC_SCR);
34}
35
36void imx_set_cpu_jump(int cpu, void *jump_addr)
37{
38 writel_relaxed(BSYM(virt_to_phys(jump_addr)),
39 src_base + SRC_GPR1 + cpu * 8);
40}
41
42void __init imx_src_init(void)
43{
44 struct device_node *np;
45
46 np = of_find_compatible_node(NULL, NULL, "fsl,imx6q-src");
47 src_base = of_iomap(np, 0);
48 WARN_ON(!src_base);
49}