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authorMagnus Damm <damm@igel.co.jp>2009-06-03 04:39:59 -0400
committerPaul Mundt <lethal@linux-sh.org>2009-06-11 02:13:36 -0400
commitc521dc02034df3681394a30b428bf081cfa22253 (patch)
tree11c6a9588653ec8780e96d8fc4e2e8f67fbafd01 /arch
parent098dee99d14e8324d3793df442d6078d0c134140 (diff)
sh: sh7723 clock framework rewrite V2
This patch contains V2 of the sh7723 clock framework rewrite. The new code makes use of the recently merged div4, div6 and mstp32 helper code. Both extal and dll are supported as input clocks to the pll. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/sh/Kconfig2
-rw-r--r--arch/sh/kernel/cpu/sh4a/Makefile2
-rw-r--r--arch/sh/kernel/cpu/sh4a/clock-sh7722.c57
-rw-r--r--arch/sh/kernel/cpu/sh4a/clock-sh7723.c222
4 files changed, 225 insertions, 58 deletions
diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
index dec8b7b8dc6c..d13390b81aa5 100644
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig
@@ -516,7 +516,7 @@ config SH_CLK_CPG
516 516
517config SH_CLK_CPG_LEGACY 517config SH_CLK_CPG_LEGACY
518 depends on SH_CLK_CPG 518 depends on SH_CLK_CPG
519 def_bool y if !CPU_SUBTYPE_SH7785 519 def_bool y if !CPU_SUBTYPE_SH7785 && !CPU_SUBTYPE_SH7723
520 520
521config SH_CLK_MD 521config SH_CLK_MD
522 int "CPU Mode Pin Setting" 522 int "CPU Mode Pin Setting"
diff --git a/arch/sh/kernel/cpu/sh4a/Makefile b/arch/sh/kernel/cpu/sh4a/Makefile
index afd6fba47849..25b2833f7446 100644
--- a/arch/sh/kernel/cpu/sh4a/Makefile
+++ b/arch/sh/kernel/cpu/sh4a/Makefile
@@ -26,7 +26,7 @@ clock-$(CONFIG_CPU_SUBTYPE_SH7785) := clock-sh7785.o
26clock-$(CONFIG_CPU_SUBTYPE_SH7786) := clock-sh7786.o 26clock-$(CONFIG_CPU_SUBTYPE_SH7786) := clock-sh7786.o
27clock-$(CONFIG_CPU_SUBTYPE_SH7343) := clock-sh7722.o 27clock-$(CONFIG_CPU_SUBTYPE_SH7343) := clock-sh7722.o
28clock-$(CONFIG_CPU_SUBTYPE_SH7722) := clock-sh7722.o 28clock-$(CONFIG_CPU_SUBTYPE_SH7722) := clock-sh7722.o
29clock-$(CONFIG_CPU_SUBTYPE_SH7723) := clock-sh7722.o 29clock-$(CONFIG_CPU_SUBTYPE_SH7723) := clock-sh7723.o
30clock-$(CONFIG_CPU_SUBTYPE_SH7724) := clock-sh7722.o 30clock-$(CONFIG_CPU_SUBTYPE_SH7724) := clock-sh7722.o
31clock-$(CONFIG_CPU_SUBTYPE_SH7366) := clock-sh7722.o 31clock-$(CONFIG_CPU_SUBTYPE_SH7366) := clock-sh7722.o
32clock-$(CONFIG_CPU_SUBTYPE_SHX3) := clock-shx3.o 32clock-$(CONFIG_CPU_SUBTYPE_SHX3) := clock-shx3.o
diff --git a/arch/sh/kernel/cpu/sh4a/clock-sh7722.c b/arch/sh/kernel/cpu/sh4a/clock-sh7722.c
index c090c9a373f6..ccefd7dde78c 100644
--- a/arch/sh/kernel/cpu/sh4a/clock-sh7722.c
+++ b/arch/sh/kernel/cpu/sh4a/clock-sh7722.c
@@ -1,7 +1,7 @@
1/* 1/*
2 * arch/sh/kernel/cpu/sh4a/clock-sh7722.c 2 * arch/sh/kernel/cpu/sh4a/clock-sh7722.c
3 * 3 *
4 * SH7343, SH7722, SH7723 & SH7366 support for the clock framework 4 * SH7343, SH7722 & SH7366 support for the clock framework
5 * 5 *
6 * Copyright (c) 2006-2007 Nomad Global Solutions Inc 6 * Copyright (c) 2006-2007 Nomad Global Solutions Inc
7 * Based on code for sh7343 by Paul Mundt 7 * Based on code for sh7343 by Paul Mundt
@@ -176,11 +176,6 @@ static unsigned long module_clk_recalc(struct clk *clk)
176#define STCMASK 0x3f 176#define STCMASK 0x3f
177#define DIVCALC(div) (div/2-1) 177#define DIVCALC(div) (div/2-1)
178#define FRQCRKICK 0x80000000 178#define FRQCRKICK 0x80000000
179#elif defined(CONFIG_CPU_SUBTYPE_SH7723)
180#define MASTERDIVS { 6, 8, 12, 16 }
181#define STCMASK 0x1f
182#define DIVCALC(div) (div-1)
183#define FRQCRKICK 0x00000000
184#else 179#else
185#define MASTERDIVS { 2, 3, 4, 6, 8, 16 } 180#define MASTERDIVS { 2, 3, 4, 6, 8, 16 }
186#define STCMASK 0x1f 181#define STCMASK 0x1f
@@ -681,56 +676,6 @@ static struct clk sh7722_mstpcr_clocks[] = {
681 MSTPCR("vpu0", "bus_clk", 2, 1, CLK_ENABLE_ON_INIT), 676 MSTPCR("vpu0", "bus_clk", 2, 1, CLK_ENABLE_ON_INIT),
682 MSTPCR("lcdc0", "bus_clk", 2, 0, 0), 677 MSTPCR("lcdc0", "bus_clk", 2, 0, 0),
683#endif 678#endif
684#if defined(CONFIG_CPU_SUBTYPE_SH7723)
685 /* See page 60 of Datasheet V1.0: Overview -> Block Diagram */
686 MSTPCR("tlb0", "cpu_clk", 0, 31, 0),
687 MSTPCR("ic0", "cpu_clk", 0, 30, 0),
688 MSTPCR("oc0", "cpu_clk", 0, 29, 0),
689 MSTPCR("l2c0", "sh_clk", 0, 28, 0),
690 MSTPCR("ilmem0", "cpu_clk", 0, 27, 0),
691 MSTPCR("fpu0", "cpu_clk", 0, 24, 0),
692 MSTPCR("intc0", "cpu_clk", 0, 22, 0),
693 MSTPCR("dmac0", "bus_clk", 0, 21, 0),
694 MSTPCR("sh0", "sh_clk", 0, 20, 0),
695 MSTPCR("hudi0", "peripheral_clk", 0, 19, 0),
696 MSTPCR("ubc0", "cpu_clk", 0, 17, 0),
697 MSTPCR("tmu0", "peripheral_clk", 0, 15, 0),
698 MSTPCR("cmt0", "r_clk", 0, 14, 0),
699 MSTPCR("rwdt0", "r_clk", 0, 13, 0),
700 MSTPCR("dmac1", "bus_clk", 0, 12, 0),
701 MSTPCR("tmu1", "peripheral_clk", 0, 11, 0),
702 MSTPCR("flctl0", "peripheral_clk", 0, 10, 0),
703 MSTPCR("scif0", "peripheral_clk", 0, 9, 0),
704 MSTPCR("scif1", "peripheral_clk", 0, 8, 0),
705 MSTPCR("scif2", "peripheral_clk", 0, 7, 0),
706 MSTPCR("scif3", "bus_clk", 0, 6, 0),
707 MSTPCR("scif4", "bus_clk", 0, 5, 0),
708 MSTPCR("scif5", "bus_clk", 0, 4, 0),
709 MSTPCR("msiof0", "bus_clk", 0, 2, 0),
710 MSTPCR("msiof1", "bus_clk", 0, 1, 0),
711 MSTPCR("meram0", "sh_clk", 0, 0, CLK_ENABLE_ON_INIT),
712 MSTPCR("i2c0", "peripheral_clk", 1, 9, 0),
713 MSTPCR("rtc0", "r_clk", 1, 8, 0),
714 MSTPCR("atapi0", "sh_clk", 2, 28, 0),
715 MSTPCR("adc0", "peripheral_clk", 2, 28, 0),
716 MSTPCR("tpu0", "bus_clk", 2, 25, 0),
717 MSTPCR("irda0", "peripheral_clk", 2, 24, 0),
718 MSTPCR("tsif0", "bus_clk", 2, 22, 0),
719 MSTPCR("icb0", "bus_clk", 2, 21, 0),
720 MSTPCR("sdhi0", "bus_clk", 2, 18, 0),
721 MSTPCR("sdhi1", "bus_clk", 2, 17, 0),
722 MSTPCR("keysc0", "r_clk", 2, 14, 0),
723 MSTPCR("usb0", "bus_clk", 2, 11, 0),
724 MSTPCR("2dg0", "bus_clk", 2, 10, 0),
725 MSTPCR("siu0", "bus_clk", 2, 8, 0),
726 MSTPCR("veu1", "bus_clk", 2, 6, CLK_ENABLE_ON_INIT),
727 MSTPCR("vou0", "bus_clk", 2, 5, 0),
728 MSTPCR("beu0", "bus_clk", 2, 4, 0),
729 MSTPCR("ceu0", "bus_clk", 2, 3, 0),
730 MSTPCR("veu0", "bus_clk", 2, 2, CLK_ENABLE_ON_INIT),
731 MSTPCR("vpu0", "bus_clk", 2, 1, CLK_ENABLE_ON_INIT),
732 MSTPCR("lcdc0", "bus_clk", 2, 0, 0),
733#endif
734#if defined(CONFIG_CPU_SUBTYPE_SH7724) 679#if defined(CONFIG_CPU_SUBTYPE_SH7724)
735 /* See Datasheet : Overview -> Block Diagram */ 680 /* See Datasheet : Overview -> Block Diagram */
736 MSTPCR("tlb0", "cpu_clk", 0, 31, 0), 681 MSTPCR("tlb0", "cpu_clk", 0, 31, 0),
diff --git a/arch/sh/kernel/cpu/sh4a/clock-sh7723.c b/arch/sh/kernel/cpu/sh4a/clock-sh7723.c
new file mode 100644
index 000000000000..e67c2678b8ae
--- /dev/null
+++ b/arch/sh/kernel/cpu/sh4a/clock-sh7723.c
@@ -0,0 +1,222 @@
1/*
2 * arch/sh/kernel/cpu/sh4a/clock-sh7723.c
3 *
4 * SH7723 clock framework support
5 *
6 * Copyright (C) 2009 Magnus Damm
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 */
21#include <linux/init.h>
22#include <linux/kernel.h>
23#include <linux/io.h>
24#include <asm/clock.h>
25
26/* SH7723 registers */
27#define FRQCR 0xa4150000
28#define VCLKCR 0xa4150004
29#define SCLKACR 0xa4150008
30#define SCLKBCR 0xa415000c
31#define IRDACLKCR 0xa4150018
32#define PLLCR 0xa4150024
33#define MSTPCR0 0xa4150030
34#define MSTPCR1 0xa4150034
35#define MSTPCR2 0xa4150038
36#define DLLFRQ 0xa4150050
37
38/* Fixed 32 KHz root clock for RTC and Power Management purposes */
39static struct clk r_clk = {
40 .name = "rclk",
41 .id = -1,
42 .rate = 32768,
43};
44
45/*
46 * Default rate for the root input clock, reset this with clk_set_rate()
47 * from the platform code.
48 */
49struct clk extal_clk = {
50 .name = "extal",
51 .id = -1,
52 .rate = 33333333,
53};
54
55/* The dll multiplies the 32khz r_clk, may be used instead of extal */
56static unsigned long dll_recalc(struct clk *clk)
57{
58 unsigned long mult;
59
60 if (__raw_readl(PLLCR) & 0x1000)
61 mult = __raw_readl(DLLFRQ);
62 else
63 mult = 0;
64
65 return clk->parent->rate * mult;
66}
67
68static struct clk_ops dll_clk_ops = {
69 .recalc = dll_recalc,
70};
71
72static struct clk dll_clk = {
73 .name = "dll_clk",
74 .id = -1,
75 .ops = &dll_clk_ops,
76 .parent = &r_clk,
77 .flags = CLK_ENABLE_ON_INIT,
78};
79
80static unsigned long pll_recalc(struct clk *clk)
81{
82 unsigned long mult = 1;
83 unsigned long div = 1;
84
85 if (__raw_readl(PLLCR) & 0x4000)
86 mult = (((__raw_readl(FRQCR) >> 24) & 0x1f) + 1);
87 else
88 div = 2;
89
90 return (clk->parent->rate * mult) / div;
91}
92
93static struct clk_ops pll_clk_ops = {
94 .recalc = pll_recalc,
95};
96
97static struct clk pll_clk = {
98 .name = "pll_clk",
99 .id = -1,
100 .ops = &pll_clk_ops,
101 .flags = CLK_ENABLE_ON_INIT,
102};
103
104struct clk *main_clks[] = {
105 &r_clk,
106 &extal_clk,
107 &dll_clk,
108 &pll_clk,
109};
110
111static int multipliers[] = { 1, 2, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1 };
112static int divisors[] = { 1, 3, 2, 5, 3, 4, 5, 6, 8, 10, 12, 16, 20 };
113
114static struct clk_div_mult_table div4_table = {
115 .divisors = divisors,
116 .nr_divisors = ARRAY_SIZE(divisors),
117 .multipliers = multipliers,
118 .nr_multipliers = ARRAY_SIZE(multipliers),
119};
120
121enum { DIV4_I, DIV4_U, DIV4_SH, DIV4_B, DIV4_B3, DIV4_P,
122 DIV4_SIUA, DIV4_SIUB, DIV4_IRDA, DIV4_NR };
123
124#define DIV4(_str, _reg, _bit, _mask, _flags) \
125 SH_CLK_DIV4(_str, &pll_clk, _reg, _bit, _mask, _flags)
126
127struct clk div4_clks[DIV4_NR] = {
128 [DIV4_I] = DIV4("cpu_clk", FRQCR, 20, 0x0dbf, CLK_ENABLE_ON_INIT),
129 [DIV4_U] = DIV4("umem_clk", FRQCR, 16, 0x0dbf, CLK_ENABLE_ON_INIT),
130 [DIV4_SH] = DIV4("shyway_clk", FRQCR, 12, 0x0dbf, CLK_ENABLE_ON_INIT),
131 [DIV4_B] = DIV4("bus_clk", FRQCR, 8, 0x0dbf, CLK_ENABLE_ON_INIT),
132 [DIV4_B3] = DIV4("b3_clk", FRQCR, 4, 0x0db4, CLK_ENABLE_ON_INIT),
133 [DIV4_P] = DIV4("peripheral_clk", FRQCR, 0, 0x0dbf, 0),
134 [DIV4_SIUA] = DIV4("siua_clk", SCLKACR, 0, 0x0dbf, 0),
135 [DIV4_SIUB] = DIV4("siub_clk", SCLKBCR, 0, 0x0dbf, 0),
136 [DIV4_IRDA] = DIV4("irda_clk", IRDACLKCR, 0, 0x0dbf, 0),
137};
138
139struct clk div6_clks[] = {
140 SH_CLK_DIV6("video_clk", &pll_clk, VCLKCR, 0),
141};
142
143#define MSTP(_str, _parent, _reg, _bit, _force_on, _need_cpg, _need_ram) \
144 SH_CLK_MSTP32(_str, -1, _parent, _reg, _bit, _force_on * CLK_ENABLE_ON_INIT)
145
146static struct clk mstp_clks[] = {
147 /* See page 60 of Datasheet V1.0: Overview -> Block Diagram */
148 MSTP("tlb0", &div4_clks[DIV4_I], MSTPCR0, 31, 1, 1, 0),
149 MSTP("ic0", &div4_clks[DIV4_I], MSTPCR0, 30, 1, 1, 0),
150 MSTP("oc0", &div4_clks[DIV4_I], MSTPCR0, 29, 1, 1, 0),
151 MSTP("l2c0", &div4_clks[DIV4_SH], MSTPCR0, 28, 1, 1, 0),
152 MSTP("ilmem0", &div4_clks[DIV4_I], MSTPCR0, 27, 1, 1, 0),
153 MSTP("fpu0", &div4_clks[DIV4_I], MSTPCR0, 24, 1, 1, 0),
154 MSTP("intc0", &div4_clks[DIV4_I], MSTPCR0, 22, 1, 1, 0),
155 MSTP("dmac0", &div4_clks[DIV4_B], MSTPCR0, 21, 0, 1, 1),
156 MSTP("sh0", &div4_clks[DIV4_SH], MSTPCR0, 20, 0, 1, 0),
157 MSTP("hudi0", &div4_clks[DIV4_P], MSTPCR0, 19, 0, 1, 0),
158 MSTP("ubc0", &div4_clks[DIV4_I], MSTPCR0, 17, 0, 1, 0),
159 MSTP("tmu0", &div4_clks[DIV4_P], MSTPCR0, 15, 0, 1, 0),
160 MSTP("cmt0", &r_clk, MSTPCR0, 14, 0, 0, 0),
161 MSTP("rwdt0", &r_clk, MSTPCR0, 13, 0, 0, 0),
162 MSTP("dmac1", &div4_clks[DIV4_B], MSTPCR0, 12, 0, 1, 1),
163 MSTP("tmu1", &div4_clks[DIV4_P], MSTPCR0, 11, 0, 1, 0),
164 MSTP("flctl0", &div4_clks[DIV4_P], MSTPCR0, 10, 0, 1, 0),
165 MSTP("scif0", &div4_clks[DIV4_P], MSTPCR0, 9, 0, 1, 0),
166 MSTP("scif1", &div4_clks[DIV4_P], MSTPCR0, 8, 0, 1, 0),
167 MSTP("scif2", &div4_clks[DIV4_P], MSTPCR0, 7, 0, 1, 0),
168 MSTP("scif3", &div4_clks[DIV4_B], MSTPCR0, 6, 0, 1, 0),
169 MSTP("scif4", &div4_clks[DIV4_B], MSTPCR0, 5, 0, 1, 0),
170 MSTP("scif5", &div4_clks[DIV4_B], MSTPCR0, 4, 0, 1, 0),
171 MSTP("msiof0", &div4_clks[DIV4_B], MSTPCR0, 2, 0, 1, 0),
172 MSTP("msiof1", &div4_clks[DIV4_B], MSTPCR0, 1, 0, 1, 0),
173 MSTP("meram0", &div4_clks[DIV4_SH], MSTPCR0, 0, 1, 1, 0),
174
175 MSTP("i2c0", &div4_clks[DIV4_P], MSTPCR1, 9, 0, 1, 0),
176 MSTP("rtc0", &r_clk, MSTPCR1, 8, 0, 0, 0),
177
178 MSTP("atapi0", &div4_clks[DIV4_SH], MSTPCR2, 28, 0, 1, 0),
179 MSTP("adc0", &div4_clks[DIV4_P], MSTPCR2, 27, 0, 1, 0),
180 MSTP("tpu0", &div4_clks[DIV4_B], MSTPCR2, 25, 0, 1, 0),
181 MSTP("irda0", &div4_clks[DIV4_P], MSTPCR2, 24, 0, 1, 0),
182 MSTP("tsif0", &div4_clks[DIV4_B], MSTPCR2, 22, 0, 1, 0),
183 MSTP("icb0", &div4_clks[DIV4_B], MSTPCR2, 21, 0, 1, 1),
184 MSTP("sdhi0", &div4_clks[DIV4_B], MSTPCR2, 18, 0, 1, 0),
185 MSTP("sdhi1", &div4_clks[DIV4_B], MSTPCR2, 17, 0, 1, 0),
186 MSTP("keysc0", &r_clk, MSTPCR2, 14, 0, 0, 0),
187 MSTP("usb0", &div4_clks[DIV4_B], MSTPCR2, 11, 0, 1, 0),
188 MSTP("2dg0", &div4_clks[DIV4_B], MSTPCR2, 10, 0, 1, 1),
189 MSTP("siu0", &div4_clks[DIV4_B], MSTPCR2, 8, 0, 1, 0),
190 MSTP("veu1", &div4_clks[DIV4_B], MSTPCR2, 6, 1, 1, 1),
191 MSTP("vou0", &div4_clks[DIV4_B], MSTPCR2, 5, 0, 1, 1),
192 MSTP("beu0", &div4_clks[DIV4_B], MSTPCR2, 4, 0, 1, 1),
193 MSTP("ceu0", &div4_clks[DIV4_B], MSTPCR2, 3, 0, 1, 1),
194 MSTP("veu0", &div4_clks[DIV4_B], MSTPCR2, 2, 1, 1, 1),
195 MSTP("vpu0", &div4_clks[DIV4_B], MSTPCR2, 1, 1, 1, 1),
196 MSTP("lcdc0", &div4_clks[DIV4_B], MSTPCR2, 0, 0, 1, 1),
197};
198
199int __init arch_clk_init(void)
200{
201 int k, ret = 0;
202
203 /* autodetect extal or dll configuration */
204 if (__raw_readl(PLLCR) & 0x1000)
205 pll_clk.parent = &dll_clk;
206 else
207 pll_clk.parent = &extal_clk;
208
209 for (k = 0; !ret && (k < ARRAY_SIZE(main_clks)); k++)
210 ret = clk_register(main_clks[k]);
211
212 if (!ret)
213 ret = sh_clk_div4_register(div4_clks, DIV4_NR, &div4_table);
214
215 if (!ret)
216 ret = sh_clk_div6_register(div6_clks, ARRAY_SIZE(div6_clks));
217
218 if (!ret)
219 ret = sh_clk_mstp32_register(mstp_clks, ARRAY_SIZE(mstp_clks));
220
221 return ret;
222}
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