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-rw-r--r--arch/powerpc/platforms/82xx/km82xx.c206
1 files changed, 206 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/82xx/km82xx.c b/arch/powerpc/platforms/82xx/km82xx.c
new file mode 100644
index 000000000000..428c5e0a0e75
--- /dev/null
+++ b/arch/powerpc/platforms/82xx/km82xx.c
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1/*
2 * Keymile km82xx support
3 * Copyright 2008-2011 DENX Software Engineering GmbH
4 * Author: Heiko Schocher <hs@denx.de>
5 *
6 * based on code from:
7 * Copyright 2007 Freescale Semiconductor, Inc.
8 * Author: Scott Wood <scottwood@freescale.com>
9 *
10 * This program is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License as published by the
12 * Free Software Foundation; either version 2 of the License, or (at your
13 * option) any later version.
14 */
15
16#include <linux/init.h>
17#include <linux/interrupt.h>
18#include <linux/fsl_devices.h>
19#include <linux/of_platform.h>
20
21#include <asm/io.h>
22#include <asm/cpm2.h>
23#include <asm/udbg.h>
24#include <asm/machdep.h>
25#include <asm/time.h>
26#include <asm/mpc8260.h>
27#include <asm/prom.h>
28
29#include <sysdev/fsl_soc.h>
30#include <sysdev/cpm2_pic.h>
31
32#include "pq2.h"
33
34static void __init km82xx_pic_init(void)
35{
36 struct device_node *np = of_find_compatible_node(NULL, NULL,
37 "fsl,pq2-pic");
38 if (!np) {
39 printk(KERN_ERR "PIC init: can not find cpm-pic node\n");
40 return;
41 }
42
43 cpm2_pic_init(np);
44 of_node_put(np);
45}
46
47struct cpm_pin {
48 int port, pin, flags;
49};
50
51static __initdata struct cpm_pin km82xx_pins[] = {
52
53 /* SMC2 */
54 {0, 8, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
55 {0, 9, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
56
57 /* SCC1 */
58 {2, 21, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
59 {2, 15, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
60 {3, 31, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
61 {3, 30, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
62
63 /* SCC4 */
64 {2, 25, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
65 {2, 24, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
66 {2, 9, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
67 {2, 8, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
68 {3, 22, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
69 {3, 21, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
70
71 /* FCC1 */
72 {0, 14, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
73 {0, 15, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
74 {0, 16, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
75 {0, 17, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
76 {0, 18, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
77 {0, 19, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
78 {0, 20, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
79 {0, 21, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
80 {0, 26, CPM_PIN_INPUT | CPM_PIN_SECONDARY},
81 {0, 27, CPM_PIN_INPUT | CPM_PIN_SECONDARY},
82 {0, 28, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
83 {0, 29, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
84 {0, 30, CPM_PIN_INPUT | CPM_PIN_SECONDARY},
85 {0, 31, CPM_PIN_INPUT | CPM_PIN_SECONDARY},
86
87 {2, 22, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
88 {2, 23, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
89
90 /* FCC2 */
91 {1, 18, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
92 {1, 19, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
93 {1, 20, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
94 {1, 21, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
95 {1, 22, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
96 {1, 23, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
97 {1, 24, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
98 {1, 25, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
99 {1, 26, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
100 {1, 27, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
101 {1, 28, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
102 {1, 29, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
103 {1, 30, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
104 {1, 31, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
105
106 {2, 18, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
107 {2, 19, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
108
109 /* MDC */
110 {0, 13, CPM_PIN_OUTPUT | CPM_PIN_GPIO},
111
112#if defined(CONFIG_I2C_CPM)
113 /* I2C */
114 {3, 14, CPM_PIN_INPUT | CPM_PIN_SECONDARY | CPM_PIN_OPENDRAIN},
115 {3, 15, CPM_PIN_INPUT | CPM_PIN_SECONDARY | CPM_PIN_OPENDRAIN},
116#endif
117
118 /* USB */
119 {0, 10, CPM_PIN_OUTPUT | CPM_PIN_GPIO}, /* FULL_SPEED */
120 {0, 11, CPM_PIN_OUTPUT | CPM_PIN_GPIO}, /*/SLAVE */
121 {2, 10, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, /* RXN */
122 {2, 11, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, /* RXP */
123 {2, 20, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, /* /OE */
124 {2, 27, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, /* RXCLK */
125 {3, 23, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, /* TXP */
126 {3, 24, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, /* TXN */
127 {3, 25, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, /* RXD */
128};
129
130static void __init init_ioports(void)
131{
132 int i;
133
134 for (i = 0; i < ARRAY_SIZE(km82xx_pins); i++) {
135 const struct cpm_pin *pin = &km82xx_pins[i];
136 cpm2_set_pin(pin->port, pin->pin, pin->flags);
137 }
138
139 cpm2_smc_clk_setup(CPM_CLK_SMC2, CPM_BRG8);
140 cpm2_clk_setup(CPM_CLK_SCC1, CPM_CLK11, CPM_CLK_RX);
141 cpm2_clk_setup(CPM_CLK_SCC1, CPM_CLK11, CPM_CLK_TX);
142 cpm2_clk_setup(CPM_CLK_SCC3, CPM_CLK5, CPM_CLK_RTX);
143 cpm2_clk_setup(CPM_CLK_SCC4, CPM_CLK7, CPM_CLK_RX);
144 cpm2_clk_setup(CPM_CLK_SCC4, CPM_CLK8, CPM_CLK_TX);
145 cpm2_clk_setup(CPM_CLK_FCC1, CPM_CLK10, CPM_CLK_RX);
146 cpm2_clk_setup(CPM_CLK_FCC1, CPM_CLK9, CPM_CLK_TX);
147 cpm2_clk_setup(CPM_CLK_FCC2, CPM_CLK13, CPM_CLK_RX);
148 cpm2_clk_setup(CPM_CLK_FCC2, CPM_CLK14, CPM_CLK_TX);
149
150 /* Force USB FULL SPEED bit to '1' */
151 setbits32(&cpm2_immr->im_ioport.iop_pdata, 1 << (31 - 10));
152 /* clear USB_SLAVE */
153 clrbits32(&cpm2_immr->im_ioport.iop_pdata, 1 << (31 - 11));
154}
155
156static void __init km82xx_setup_arch(void)
157{
158 if (ppc_md.progress)
159 ppc_md.progress("km82xx_setup_arch()", 0);
160
161 cpm2_reset();
162
163 /* When this is set, snooping CPM DMA from RAM causes
164 * machine checks. See erratum SIU18.
165 */
166 clrbits32(&cpm2_immr->im_siu_conf.siu_82xx.sc_bcr, MPC82XX_BCR_PLDP);
167
168 init_ioports();
169
170 if (ppc_md.progress)
171 ppc_md.progress("km82xx_setup_arch(), finish", 0);
172}
173
174static __initdata struct of_device_id of_bus_ids[] = {
175 { .compatible = "simple-bus", },
176 {},
177};
178
179static int __init declare_of_platform_devices(void)
180{
181 of_platform_bus_probe(NULL, of_bus_ids, NULL);
182
183 return 0;
184}
185machine_device_initcall(km82xx, declare_of_platform_devices);
186
187/*
188 * Called very early, device-tree isn't unflattened
189 */
190static int __init km82xx_probe(void)
191{
192 unsigned long root = of_get_flat_dt_root();
193 return of_flat_dt_is_compatible(root, "keymile,km82xx");
194}
195
196define_machine(km82xx)
197{
198 .name = "Keymile km82xx",
199 .probe = km82xx_probe,
200 .setup_arch = km82xx_setup_arch,
201 .init_IRQ = km82xx_pic_init,
202 .get_irq = cpm2_get_irq,
203 .calibrate_decr = generic_calibrate_decr,
204 .restart = pq2_restart,
205 .progress = udbg_progress,
206};
generated by cgit v1.2.2 (git 2.25.0) at 2025-02-20 11:43:24 -0500