2 * linux/arch/arm/mach-omap2/io.c
4 * OMAP2 I/O mapping code
6 * Copyright (C) 2005 Nokia Corporation
7 * Copyright (C) 2007-2009 Texas Instruments
10 * Juha Yrjola <juha.yrjola@nokia.com>
11 * Syed Khasim <x0khasim@ti.com>
13 * Added OMAP4 support - Santosh Shilimkar <santosh.shilimkar@ti.com>
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.
19 #include <linux/module.h>
20 #include <linux/kernel.h>
21 #include <linux/init.h>
23 #include <linux/clk.h>
26 #include <asm/mach/map.h>
28 #include <plat/sram.h>
29 #include <plat/sdrc.h>
30 #include <plat/serial.h>
31 #include <plat/omap-pm.h>
32 #include <plat/omap_hwmod.h>
33 #include <plat/multi.h>
37 #include "powerdomain.h"
38 #include "clockdomain.h"
40 #include "clock2xxx.h"
41 #include "clock3xxx.h"
42 #include "clock44xx.h"
45 * The machine specific code may provide the extra mapping besides the
46 * default mapping provided here.
49 #if defined(CONFIG_SOC_OMAP2420) || defined(CONFIG_SOC_OMAP2430)
50 static struct map_desc omap24xx_io_desc
[] __initdata
= {
52 .virtual = L3_24XX_VIRT
,
53 .pfn
= __phys_to_pfn(L3_24XX_PHYS
),
54 .length
= L3_24XX_SIZE
,
58 .virtual = L4_24XX_VIRT
,
59 .pfn
= __phys_to_pfn(L4_24XX_PHYS
),
60 .length
= L4_24XX_SIZE
,
65 #ifdef CONFIG_SOC_OMAP2420
66 static struct map_desc omap242x_io_desc
[] __initdata
= {
68 .virtual = DSP_MEM_2420_VIRT
,
69 .pfn
= __phys_to_pfn(DSP_MEM_2420_PHYS
),
70 .length
= DSP_MEM_2420_SIZE
,
74 .virtual = DSP_IPI_2420_VIRT
,
75 .pfn
= __phys_to_pfn(DSP_IPI_2420_PHYS
),
76 .length
= DSP_IPI_2420_SIZE
,
80 .virtual = DSP_MMU_2420_VIRT
,
81 .pfn
= __phys_to_pfn(DSP_MMU_2420_PHYS
),
82 .length
= DSP_MMU_2420_SIZE
,
89 #ifdef CONFIG_SOC_OMAP2430
90 static struct map_desc omap243x_io_desc
[] __initdata
= {
92 .virtual = L4_WK_243X_VIRT
,
93 .pfn
= __phys_to_pfn(L4_WK_243X_PHYS
),
94 .length
= L4_WK_243X_SIZE
,
98 .virtual = OMAP243X_GPMC_VIRT
,
99 .pfn
= __phys_to_pfn(OMAP243X_GPMC_PHYS
),
100 .length
= OMAP243X_GPMC_SIZE
,
104 .virtual = OMAP243X_SDRC_VIRT
,
105 .pfn
= __phys_to_pfn(OMAP243X_SDRC_PHYS
),
106 .length
= OMAP243X_SDRC_SIZE
,
110 .virtual = OMAP243X_SMS_VIRT
,
111 .pfn
= __phys_to_pfn(OMAP243X_SMS_PHYS
),
112 .length
= OMAP243X_SMS_SIZE
,
119 #ifdef CONFIG_ARCH_OMAP3
120 static struct map_desc omap34xx_io_desc
[] __initdata
= {
122 .virtual = L3_34XX_VIRT
,
123 .pfn
= __phys_to_pfn(L3_34XX_PHYS
),
124 .length
= L3_34XX_SIZE
,
128 .virtual = L4_34XX_VIRT
,
129 .pfn
= __phys_to_pfn(L4_34XX_PHYS
),
130 .length
= L4_34XX_SIZE
,
134 .virtual = OMAP34XX_GPMC_VIRT
,
135 .pfn
= __phys_to_pfn(OMAP34XX_GPMC_PHYS
),
136 .length
= OMAP34XX_GPMC_SIZE
,
140 .virtual = OMAP343X_SMS_VIRT
,
141 .pfn
= __phys_to_pfn(OMAP343X_SMS_PHYS
),
142 .length
= OMAP343X_SMS_SIZE
,
146 .virtual = OMAP343X_SDRC_VIRT
,
147 .pfn
= __phys_to_pfn(OMAP343X_SDRC_PHYS
),
148 .length
= OMAP343X_SDRC_SIZE
,
152 .virtual = L4_PER_34XX_VIRT
,
153 .pfn
= __phys_to_pfn(L4_PER_34XX_PHYS
),
154 .length
= L4_PER_34XX_SIZE
,
158 .virtual = L4_EMU_34XX_VIRT
,
159 .pfn
= __phys_to_pfn(L4_EMU_34XX_PHYS
),
160 .length
= L4_EMU_34XX_SIZE
,
163 #if defined(CONFIG_DEBUG_LL) && \
164 (defined(CONFIG_MACH_OMAP_ZOOM2) || defined(CONFIG_MACH_OMAP_ZOOM3))
166 .virtual = ZOOM_UART_VIRT
,
167 .pfn
= __phys_to_pfn(ZOOM_UART_BASE
),
175 #ifdef CONFIG_SOC_OMAPTI81XX
176 static struct map_desc omapti81xx_io_desc
[] __initdata
= {
178 .virtual = L4_34XX_VIRT
,
179 .pfn
= __phys_to_pfn(L4_34XX_PHYS
),
180 .length
= L4_34XX_SIZE
,
186 #ifdef CONFIG_SOC_OMAPAM33XX
187 static struct map_desc omapam33xx_io_desc
[] __initdata
= {
189 .virtual = L4_34XX_VIRT
,
190 .pfn
= __phys_to_pfn(L4_34XX_PHYS
),
191 .length
= L4_34XX_SIZE
,
195 .virtual = L4_WK_AM33XX_VIRT
,
196 .pfn
= __phys_to_pfn(L4_WK_AM33XX_PHYS
),
197 .length
= L4_WK_AM33XX_SIZE
,
203 #ifdef CONFIG_ARCH_OMAP4
204 static struct map_desc omap44xx_io_desc
[] __initdata
= {
206 .virtual = L3_44XX_VIRT
,
207 .pfn
= __phys_to_pfn(L3_44XX_PHYS
),
208 .length
= L3_44XX_SIZE
,
212 .virtual = L4_44XX_VIRT
,
213 .pfn
= __phys_to_pfn(L4_44XX_PHYS
),
214 .length
= L4_44XX_SIZE
,
218 .virtual = OMAP44XX_GPMC_VIRT
,
219 .pfn
= __phys_to_pfn(OMAP44XX_GPMC_PHYS
),
220 .length
= OMAP44XX_GPMC_SIZE
,
224 .virtual = OMAP44XX_EMIF1_VIRT
,
225 .pfn
= __phys_to_pfn(OMAP44XX_EMIF1_PHYS
),
226 .length
= OMAP44XX_EMIF1_SIZE
,
230 .virtual = OMAP44XX_EMIF2_VIRT
,
231 .pfn
= __phys_to_pfn(OMAP44XX_EMIF2_PHYS
),
232 .length
= OMAP44XX_EMIF2_SIZE
,
236 .virtual = OMAP44XX_DMM_VIRT
,
237 .pfn
= __phys_to_pfn(OMAP44XX_DMM_PHYS
),
238 .length
= OMAP44XX_DMM_SIZE
,
242 .virtual = L4_PER_44XX_VIRT
,
243 .pfn
= __phys_to_pfn(L4_PER_44XX_PHYS
),
244 .length
= L4_PER_44XX_SIZE
,
248 .virtual = L4_EMU_44XX_VIRT
,
249 .pfn
= __phys_to_pfn(L4_EMU_44XX_PHYS
),
250 .length
= L4_EMU_44XX_SIZE
,
253 #ifdef CONFIG_OMAP4_ERRATA_I688
255 .virtual = OMAP4_SRAM_VA
,
256 .pfn
= __phys_to_pfn(OMAP4_SRAM_PA
),
258 .type
= MT_MEMORY_SO
,
265 #ifdef CONFIG_SOC_OMAP2420
266 void __init
omap242x_map_common_io(void)
268 iotable_init(omap24xx_io_desc
, ARRAY_SIZE(omap24xx_io_desc
));
269 iotable_init(omap242x_io_desc
, ARRAY_SIZE(omap242x_io_desc
));
273 #ifdef CONFIG_SOC_OMAP2430
274 void __init
omap243x_map_common_io(void)
276 iotable_init(omap24xx_io_desc
, ARRAY_SIZE(omap24xx_io_desc
));
277 iotable_init(omap243x_io_desc
, ARRAY_SIZE(omap243x_io_desc
));
281 #ifdef CONFIG_ARCH_OMAP3
282 void __init
omap34xx_map_common_io(void)
284 iotable_init(omap34xx_io_desc
, ARRAY_SIZE(omap34xx_io_desc
));
288 #ifdef CONFIG_SOC_OMAPTI81XX
289 void __init
omapti81xx_map_common_io(void)
291 iotable_init(omapti81xx_io_desc
, ARRAY_SIZE(omapti81xx_io_desc
));
295 #ifdef CONFIG_SOC_OMAPAM33XX
296 void __init
omapam33xx_map_common_io(void)
298 iotable_init(omapam33xx_io_desc
, ARRAY_SIZE(omapam33xx_io_desc
));
302 #ifdef CONFIG_ARCH_OMAP4
303 void __init
omap44xx_map_common_io(void)
305 iotable_init(omap44xx_io_desc
, ARRAY_SIZE(omap44xx_io_desc
));
306 omap_barriers_init();
311 * omap2_init_reprogram_sdrc - reprogram SDRC timing parameters
313 * Sets the CORE DPLL3 M2 divider to the same value that it's at
314 * currently. This has the effect of setting the SDRC SDRAM AC timing
315 * registers to the values currently defined by the kernel. Currently
316 * only defined for OMAP3; will return 0 if called on OMAP2. Returns
317 * -EINVAL if the dpll3_m2_ck cannot be found, 0 if called on OMAP2,
318 * or passes along the return value of clk_set_rate().
320 static int __init
_omap2_init_reprogram_sdrc(void)
322 struct clk
*dpll3_m2_ck
;
326 if (!cpu_is_omap34xx())
329 dpll3_m2_ck
= clk_get(NULL
, "dpll3_m2_ck");
330 if (IS_ERR(dpll3_m2_ck
))
333 rate
= clk_get_rate(dpll3_m2_ck
);
334 pr_info("Reprogramming SDRC clock to %ld Hz\n", rate
);
335 v
= clk_set_rate(dpll3_m2_ck
, rate
);
337 pr_err("dpll3_m2_clk rate change failed: %d\n", v
);
339 clk_put(dpll3_m2_ck
);
344 static int _set_hwmod_postsetup_state(struct omap_hwmod
*oh
, void *data
)
346 return omap_hwmod_set_postsetup_state(oh
, *(u8
*)data
);
349 static void __init
omap_common_init_early(void)
351 omap_init_consistent_dma_size();
354 static void __init
omap_hwmod_init_postsetup(void)
358 /* Set the default postsetup state for all hwmods */
359 #ifdef CONFIG_PM_RUNTIME
360 postsetup_state
= _HWMOD_STATE_IDLE
;
362 postsetup_state
= _HWMOD_STATE_ENABLED
;
364 omap_hwmod_for_each(_set_hwmod_postsetup_state
, &postsetup_state
);
366 omap_pm_if_early_init();
369 #ifdef CONFIG_SOC_OMAP2420
370 void __init
omap2420_init_early(void)
372 omap2_set_globals_242x();
373 omap2xxx_check_revision();
374 omap_common_init_early();
375 omap2xxx_voltagedomains_init();
376 omap242x_powerdomains_init();
377 omap242x_clockdomains_init();
378 omap2420_hwmod_init();
379 omap_hwmod_init_postsetup();
384 #ifdef CONFIG_SOC_OMAP2430
385 void __init
omap2430_init_early(void)
387 omap2_set_globals_243x();
388 omap2xxx_check_revision();
389 omap_common_init_early();
390 omap2xxx_voltagedomains_init();
391 omap243x_powerdomains_init();
392 omap243x_clockdomains_init();
393 omap2430_hwmod_init();
394 omap_hwmod_init_postsetup();
400 * Currently only board-omap3beagle.c should call this because of the
401 * same machine_id for 34xx and 36xx beagle.. Will get fixed with DT.
403 #ifdef CONFIG_ARCH_OMAP3
404 void __init
omap3_init_early(void)
406 omap2_set_globals_3xxx();
407 omap3xxx_check_revision();
408 omap3xxx_check_features();
409 omap_common_init_early();
410 omap3xxx_voltagedomains_init();
411 omap3xxx_powerdomains_init();
412 omap3xxx_clockdomains_init();
413 omap3xxx_hwmod_init();
414 omap_hwmod_init_postsetup();
418 void __init
omap3430_init_early(void)
423 void __init
omap35xx_init_early(void)
428 void __init
omap3630_init_early(void)
433 void __init
am35xx_init_early(void)
438 void __init
ti81xx_init_early(void)
440 omap2_set_globals_ti81xx();
441 omap3xxx_check_revision();
442 ti81xx_check_features();
443 omap_common_init_early();
444 omap3xxx_voltagedomains_init();
445 omap3xxx_powerdomains_init();
446 omap3xxx_clockdomains_init();
447 omap3xxx_hwmod_init();
448 omap_hwmod_init_postsetup();
453 #ifdef CONFIG_ARCH_OMAP4
454 void __init
omap4430_init_early(void)
456 omap2_set_globals_443x();
457 omap4xxx_check_revision();
458 omap4xxx_check_features();
459 omap_common_init_early();
460 omap44xx_voltagedomains_init();
461 omap44xx_powerdomains_init();
462 omap44xx_clockdomains_init();
463 omap44xx_hwmod_init();
464 omap_hwmod_init_postsetup();
469 void __init
omap_sdrc_init(struct omap_sdrc_params
*sdrc_cs0
,
470 struct omap_sdrc_params
*sdrc_cs1
)
474 if (cpu_is_omap24xx() || omap3_has_sdrc()) {
475 omap2_sdrc_init(sdrc_cs0
, sdrc_cs1
);
476 _omap2_init_reprogram_sdrc();