omap: Fix DEBUG_LL UART io address
[linux-2.6-block.git] / arch / arm / mach-omap2 / io.c
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1/*
2 * linux/arch/arm/mach-omap2/io.c
3 *
4 * OMAP2 I/O mapping code
5 *
6 * Copyright (C) 2005 Nokia Corporation
44169075 7 * Copyright (C) 2007-2009 Texas Instruments
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8 *
9 * Author:
10 * Juha Yrjola <juha.yrjola@nokia.com>
11 * Syed Khasim <x0khasim@ti.com>
1dbae815 12 *
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13 * Added OMAP4 support - Santosh Shilimkar <santosh.shilimkar@ti.com>
14 *
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15 * This program is free software; you can redistribute it and/or modify
16 * it under the terms of the GNU General Public License version 2 as
17 * published by the Free Software Foundation.
18 */
19
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20#include <linux/module.h>
21#include <linux/kernel.h>
22#include <linux/init.h>
fced80c7 23#include <linux/io.h>
2f135eaf 24#include <linux/clk.h>
1dbae815 25
120db2cb 26#include <asm/tlb.h>
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27
28#include <asm/mach/map.h>
29
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30#include <mach/mux.h>
31#include <mach/omapfb.h>
646e3ed1 32#include <mach/sram.h>
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33#include <mach/sdrc.h>
34#include <mach/gpmc.h>
b3c6df3a 35#include <mach/serial.h>
646e3ed1 36
44169075 37#ifndef CONFIG_ARCH_OMAP4 /* FIXME: Remove this once clkdev is ready */
646e3ed1 38#include "clock.h"
1dbae815 39
c0407a96 40#include <mach/omap-pm.h>
9717100f 41#include <mach/powerdomain.h>
9717100f 42#include "powerdomains.h"
1dbae815 43
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44#include <mach/clockdomain.h>
45#include "clockdomains.h"
44169075 46#endif
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47#include <mach/omap_hwmod.h>
48#include "omap_hwmod_2420.h"
49#include "omap_hwmod_2430.h"
50#include "omap_hwmod_34xx.h"
51
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52/*
53 * The machine specific code may provide the extra mapping besides the
54 * default mapping provided here.
55 */
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56
57#ifdef CONFIG_ARCH_OMAP24XX
58static struct map_desc omap24xx_io_desc[] __initdata = {
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59 {
60 .virtual = L3_24XX_VIRT,
61 .pfn = __phys_to_pfn(L3_24XX_PHYS),
62 .length = L3_24XX_SIZE,
63 .type = MT_DEVICE
64 },
09f21ed4 65 {
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66 .virtual = L4_24XX_VIRT,
67 .pfn = __phys_to_pfn(L4_24XX_PHYS),
68 .length = L4_24XX_SIZE,
69 .type = MT_DEVICE
09f21ed4 70 },
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71};
72
73#ifdef CONFIG_ARCH_OMAP2420
74static struct map_desc omap242x_io_desc[] __initdata = {
75 {
76 .virtual = DSP_MEM_24XX_VIRT,
77 .pfn = __phys_to_pfn(DSP_MEM_24XX_PHYS),
78 .length = DSP_MEM_24XX_SIZE,
79 .type = MT_DEVICE
80 },
81 {
82 .virtual = DSP_IPI_24XX_VIRT,
83 .pfn = __phys_to_pfn(DSP_IPI_24XX_PHYS),
84 .length = DSP_IPI_24XX_SIZE,
85 .type = MT_DEVICE
09f21ed4 86 },
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87 {
88 .virtual = DSP_MMU_24XX_VIRT,
89 .pfn = __phys_to_pfn(DSP_MMU_24XX_PHYS),
90 .length = DSP_MMU_24XX_SIZE,
91 .type = MT_DEVICE
92 },
93};
94
95#endif
96
72d0f1c3 97#ifdef CONFIG_ARCH_OMAP2430
cc26b3b0 98static struct map_desc omap243x_io_desc[] __initdata = {
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99 {
100 .virtual = L4_WK_243X_VIRT,
101 .pfn = __phys_to_pfn(L4_WK_243X_PHYS),
102 .length = L4_WK_243X_SIZE,
103 .type = MT_DEVICE
104 },
105 {
106 .virtual = OMAP243X_GPMC_VIRT,
107 .pfn = __phys_to_pfn(OMAP243X_GPMC_PHYS),
108 .length = OMAP243X_GPMC_SIZE,
109 .type = MT_DEVICE
110 },
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111 {
112 .virtual = OMAP243X_SDRC_VIRT,
113 .pfn = __phys_to_pfn(OMAP243X_SDRC_PHYS),
114 .length = OMAP243X_SDRC_SIZE,
115 .type = MT_DEVICE
116 },
117 {
118 .virtual = OMAP243X_SMS_VIRT,
119 .pfn = __phys_to_pfn(OMAP243X_SMS_PHYS),
120 .length = OMAP243X_SMS_SIZE,
121 .type = MT_DEVICE
122 },
123};
72d0f1c3 124#endif
72d0f1c3 125#endif
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126
127#ifdef CONFIG_ARCH_OMAP34XX
128static struct map_desc omap34xx_io_desc[] __initdata = {
1dbae815 129 {
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130 .virtual = L3_34XX_VIRT,
131 .pfn = __phys_to_pfn(L3_34XX_PHYS),
132 .length = L3_34XX_SIZE,
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133 .type = MT_DEVICE
134 },
135 {
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136 .virtual = L4_34XX_VIRT,
137 .pfn = __phys_to_pfn(L4_34XX_PHYS),
138 .length = L4_34XX_SIZE,
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139 .type = MT_DEVICE
140 },
141 {
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142 .virtual = L4_WK_34XX_VIRT,
143 .pfn = __phys_to_pfn(L4_WK_34XX_PHYS),
144 .length = L4_WK_34XX_SIZE,
145 .type = MT_DEVICE
146 },
147 {
148 .virtual = OMAP34XX_GPMC_VIRT,
149 .pfn = __phys_to_pfn(OMAP34XX_GPMC_PHYS),
150 .length = OMAP34XX_GPMC_SIZE,
1dbae815 151 .type = MT_DEVICE
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152 },
153 {
154 .virtual = OMAP343X_SMS_VIRT,
155 .pfn = __phys_to_pfn(OMAP343X_SMS_PHYS),
156 .length = OMAP343X_SMS_SIZE,
157 .type = MT_DEVICE
158 },
159 {
160 .virtual = OMAP343X_SDRC_VIRT,
161 .pfn = __phys_to_pfn(OMAP343X_SDRC_PHYS),
162 .length = OMAP343X_SDRC_SIZE,
1dbae815 163 .type = MT_DEVICE
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164 },
165 {
166 .virtual = L4_PER_34XX_VIRT,
167 .pfn = __phys_to_pfn(L4_PER_34XX_PHYS),
168 .length = L4_PER_34XX_SIZE,
169 .type = MT_DEVICE
170 },
171 {
172 .virtual = L4_EMU_34XX_VIRT,
173 .pfn = __phys_to_pfn(L4_EMU_34XX_PHYS),
174 .length = L4_EMU_34XX_SIZE,
175 .type = MT_DEVICE
176 },
1dbae815 177};
cc26b3b0 178#endif
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179#ifdef CONFIG_ARCH_OMAP4
180static struct map_desc omap44xx_io_desc[] __initdata = {
181 {
182 .virtual = L3_44XX_VIRT,
183 .pfn = __phys_to_pfn(L3_44XX_PHYS),
184 .length = L3_44XX_SIZE,
185 .type = MT_DEVICE,
186 },
187 {
188 .virtual = L4_44XX_VIRT,
189 .pfn = __phys_to_pfn(L4_44XX_PHYS),
190 .length = L4_44XX_SIZE,
191 .type = MT_DEVICE,
192 },
193 {
194 .virtual = L4_WK_44XX_VIRT,
195 .pfn = __phys_to_pfn(L4_WK_44XX_PHYS),
196 .length = L4_WK_44XX_SIZE,
197 .type = MT_DEVICE,
198 },
199 {
200 .virtual = OMAP44XX_GPMC_VIRT,
201 .pfn = __phys_to_pfn(OMAP44XX_GPMC_PHYS),
202 .length = OMAP44XX_GPMC_SIZE,
203 .type = MT_DEVICE,
204 },
205 {
206 .virtual = L4_PER_44XX_VIRT,
207 .pfn = __phys_to_pfn(L4_PER_44XX_PHYS),
208 .length = L4_PER_44XX_SIZE,
209 .type = MT_DEVICE,
210 },
211 {
212 .virtual = L4_EMU_44XX_VIRT,
213 .pfn = __phys_to_pfn(L4_EMU_44XX_PHYS),
214 .length = L4_EMU_44XX_SIZE,
215 .type = MT_DEVICE,
216 },
217};
218#endif
1dbae815 219
120db2cb 220void __init omap2_map_common_io(void)
1dbae815 221{
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222#if defined(CONFIG_ARCH_OMAP2420)
223 iotable_init(omap24xx_io_desc, ARRAY_SIZE(omap24xx_io_desc));
224 iotable_init(omap242x_io_desc, ARRAY_SIZE(omap242x_io_desc));
225#endif
226
227#if defined(CONFIG_ARCH_OMAP2430)
228 iotable_init(omap24xx_io_desc, ARRAY_SIZE(omap24xx_io_desc));
229 iotable_init(omap243x_io_desc, ARRAY_SIZE(omap243x_io_desc));
230#endif
231
232#if defined(CONFIG_ARCH_OMAP34XX)
233 iotable_init(omap34xx_io_desc, ARRAY_SIZE(omap34xx_io_desc));
234#endif
120db2cb 235
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236#if defined(CONFIG_ARCH_OMAP4)
237 iotable_init(omap44xx_io_desc, ARRAY_SIZE(omap44xx_io_desc));
238#endif
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239 /* Normally devicemaps_init() would flush caches and tlb after
240 * mdesc->map_io(), but we must also do it here because of the CPU
241 * revision check below.
242 */
243 local_flush_tlb_all();
244 flush_cache_all();
245
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246 omap2_check_revision();
247 omap_sram_init();
b7cc6d46 248 omapfb_reserve_sdram();
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249}
250
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251/*
252 * omap2_init_reprogram_sdrc - reprogram SDRC timing parameters
253 *
254 * Sets the CORE DPLL3 M2 divider to the same value that it's at
255 * currently. This has the effect of setting the SDRC SDRAM AC timing
256 * registers to the values currently defined by the kernel. Currently
257 * only defined for OMAP3; will return 0 if called on OMAP2. Returns
258 * -EINVAL if the dpll3_m2_ck cannot be found, 0 if called on OMAP2,
259 * or passes along the return value of clk_set_rate().
260 */
261static int __init _omap2_init_reprogram_sdrc(void)
262{
263 struct clk *dpll3_m2_ck;
264 int v = -EINVAL;
265 long rate;
266
267 if (!cpu_is_omap34xx())
268 return 0;
269
270 dpll3_m2_ck = clk_get(NULL, "dpll3_m2_ck");
271 if (!dpll3_m2_ck)
272 return -EINVAL;
273
274 rate = clk_get_rate(dpll3_m2_ck);
275 pr_info("Reprogramming SDRC clock to %ld Hz\n", rate);
276 v = clk_set_rate(dpll3_m2_ck, rate);
277 if (v)
278 pr_err("dpll3_m2_clk rate change failed: %d\n", v);
279
280 clk_put(dpll3_m2_ck);
281
282 return v;
283}
284
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285void __init omap2_init_common_hw(struct omap_sdrc_params *sdrc_cs0,
286 struct omap_sdrc_params *sdrc_cs1)
120db2cb 287{
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288 struct omap_hwmod **hwmods = NULL;
289
290 if (cpu_is_omap2420())
291 hwmods = omap2420_hwmods;
292 else if (cpu_is_omap2430())
293 hwmods = omap2430_hwmods;
294 else if (cpu_is_omap34xx())
295 hwmods = omap34xx_hwmods;
296
44169075 297#ifndef CONFIG_ARCH_OMAP4 /* FIXME: Remove this once the clkdev is ready */
c0407a96 298 /* The OPP tables have to be registered before a clk init */
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299 omap_hwmod_init(hwmods);
300 omap2_mux_init();
c0407a96 301 omap_pm_if_early_init(mpu_opps, dsp_opps, l3_opps);
9717100f 302 pwrdm_init(powerdomains_omap);
801954d3 303 clkdm_init(clockdomains_omap, clkdm_pwrdm_autodeps);
1dbae815 304 omap2_clk_init();
b3c6df3a 305 omap_serial_early_init();
02bfc030 306 omap_hwmod_late_init();
c0407a96 307 omap_pm_if_init();
58cda884 308 omap2_sdrc_init(sdrc_cs0, sdrc_cs1);
2f135eaf 309 _omap2_init_reprogram_sdrc();
44169075 310#endif
4bbbc1ad 311 gpmc_init();
1dbae815 312}