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linux/arch/arm/mach-omap2/io.c
Tony Lindgren 02b83dcb3d ARM: OMAP2+: Initialize SoC PM later 
There's no need to probe devices until at module_init time and we
currently have at least PM trying to use I2C for PMICs early on.

As only a part of the SoC init_early is SoC specific, we only need to call
the SoC specific PM init function. And we can modify omap2_common_pm_late_init()
so it becomes a late_initcall().

Note that this changes am335x to call omap2_clk_enable_autoidle_all() that
seems to be missing currently.

Cc: Keerthy <j-keerthy@ti.com>
Cc: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2018-04-30 12:04:51 -07:00

726 lines
16 KiB
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Raw Blame History

/*
* linux/arch/arm/mach-omap2/io.c
*
* OMAP2 I/O mapping code
*
* Copyright (C) 2005 Nokia Corporation
* Copyright (C) 2007-2009 Texas Instruments
*
* Author:
* Juha Yrjola <juha.yrjola@nokia.com>
* Syed Khasim <x0khasim@ti.com>
*
* Added OMAP4 support - Santosh Shilimkar <santosh.shilimkar@ti.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/io.h>
#include <linux/clk.h>
#include <asm/tlb.h>
#include <asm/mach/map.h>
#include <linux/omap-dma.h>
#include "omap_hwmod.h"
#include "soc.h"
#include "iomap.h"
#include "voltage.h"
#include "powerdomain.h"
#include "clockdomain.h"
#include "common.h"
#include "clock.h"
#include "clock2xxx.h"
#include "clock3xxx.h"
#include "sdrc.h"
#include "control.h"
#include "serial.h"
#include "sram.h"
#include "cm2xxx.h"
#include "cm3xxx.h"
#include "cm33xx.h"
#include "cm44xx.h"
#include "prm.h"
#include "cm.h"
#include "prcm_mpu44xx.h"
#include "prminst44xx.h"
#include "prm2xxx.h"
#include "prm3xxx.h"
#include "prm33xx.h"
#include "prm44xx.h"
#include "opp2xxx.h"
/*
* omap_clk_soc_init: points to a function that does the SoC-specific
* clock initializations
*/
static int (*omap_clk_soc_init)(void);
/*
* The machine specific code may provide the extra mapping besides the
* default mapping provided here.
*/
#if defined(CONFIG_SOC_OMAP2420) || defined(CONFIG_SOC_OMAP2430)
static struct map_desc omap24xx_io_desc[] __initdata = {
{
.virtual = L3_24XX_VIRT,
.pfn = __phys_to_pfn(L3_24XX_PHYS),
.length = L3_24XX_SIZE,
.type = MT_DEVICE
},
{
.virtual = L4_24XX_VIRT,
.pfn = __phys_to_pfn(L4_24XX_PHYS),
.length = L4_24XX_SIZE,
.type = MT_DEVICE
},
};
#ifdef CONFIG_SOC_OMAP2420
static struct map_desc omap242x_io_desc[] __initdata = {
{
.virtual = DSP_MEM_2420_VIRT,
.pfn = __phys_to_pfn(DSP_MEM_2420_PHYS),
.length = DSP_MEM_2420_SIZE,
.type = MT_DEVICE
},
{
.virtual = DSP_IPI_2420_VIRT,
.pfn = __phys_to_pfn(DSP_IPI_2420_PHYS),
.length = DSP_IPI_2420_SIZE,
.type = MT_DEVICE
},
{
.virtual = DSP_MMU_2420_VIRT,
.pfn = __phys_to_pfn(DSP_MMU_2420_PHYS),
.length = DSP_MMU_2420_SIZE,
.type = MT_DEVICE
},
};
#endif
#ifdef CONFIG_SOC_OMAP2430
static struct map_desc omap243x_io_desc[] __initdata = {
{
.virtual = L4_WK_243X_VIRT,
.pfn = __phys_to_pfn(L4_WK_243X_PHYS),
.length = L4_WK_243X_SIZE,
.type = MT_DEVICE
},
{
.virtual = OMAP243X_GPMC_VIRT,
.pfn = __phys_to_pfn(OMAP243X_GPMC_PHYS),
.length = OMAP243X_GPMC_SIZE,
.type = MT_DEVICE
},
{
.virtual = OMAP243X_SDRC_VIRT,
.pfn = __phys_to_pfn(OMAP243X_SDRC_PHYS),
.length = OMAP243X_SDRC_SIZE,
.type = MT_DEVICE
},
{
.virtual = OMAP243X_SMS_VIRT,
.pfn = __phys_to_pfn(OMAP243X_SMS_PHYS),
.length = OMAP243X_SMS_SIZE,
.type = MT_DEVICE
},
};
#endif
#endif
#ifdef CONFIG_ARCH_OMAP3
static struct map_desc omap34xx_io_desc[] __initdata = {
{
.virtual = L3_34XX_VIRT,
.pfn = __phys_to_pfn(L3_34XX_PHYS),
.length = L3_34XX_SIZE,
.type = MT_DEVICE
},
{
.virtual = L4_34XX_VIRT,
.pfn = __phys_to_pfn(L4_34XX_PHYS),
.length = L4_34XX_SIZE,
.type = MT_DEVICE
},
{
.virtual = OMAP34XX_GPMC_VIRT,
.pfn = __phys_to_pfn(OMAP34XX_GPMC_PHYS),
.length = OMAP34XX_GPMC_SIZE,
.type = MT_DEVICE
},
{
.virtual = OMAP343X_SMS_VIRT,
.pfn = __phys_to_pfn(OMAP343X_SMS_PHYS),
.length = OMAP343X_SMS_SIZE,
.type = MT_DEVICE
},
{
.virtual = OMAP343X_SDRC_VIRT,
.pfn = __phys_to_pfn(OMAP343X_SDRC_PHYS),
.length = OMAP343X_SDRC_SIZE,
.type = MT_DEVICE
},
{
.virtual = L4_PER_34XX_VIRT,
.pfn = __phys_to_pfn(L4_PER_34XX_PHYS),
.length = L4_PER_34XX_SIZE,
.type = MT_DEVICE
},
{
.virtual = L4_EMU_34XX_VIRT,
.pfn = __phys_to_pfn(L4_EMU_34XX_PHYS),
.length = L4_EMU_34XX_SIZE,
.type = MT_DEVICE
},
};
#endif
#ifdef CONFIG_SOC_TI81XX
static struct map_desc omapti81xx_io_desc[] __initdata = {
{
.virtual = L4_34XX_VIRT,
.pfn = __phys_to_pfn(L4_34XX_PHYS),
.length = L4_34XX_SIZE,
.type = MT_DEVICE
}
};
#endif
#if defined(CONFIG_SOC_AM33XX) || defined(CONFIG_SOC_AM43XX)
static struct map_desc omapam33xx_io_desc[] __initdata = {
{
.virtual = L4_34XX_VIRT,
.pfn = __phys_to_pfn(L4_34XX_PHYS),
.length = L4_34XX_SIZE,
.type = MT_DEVICE
},
{
.virtual = L4_WK_AM33XX_VIRT,
.pfn = __phys_to_pfn(L4_WK_AM33XX_PHYS),
.length = L4_WK_AM33XX_SIZE,
.type = MT_DEVICE
}
};
#endif
#ifdef CONFIG_ARCH_OMAP4
static struct map_desc omap44xx_io_desc[] __initdata = {
{
.virtual = L3_44XX_VIRT,
.pfn = __phys_to_pfn(L3_44XX_PHYS),
.length = L3_44XX_SIZE,
.type = MT_DEVICE,
},
{
.virtual = L4_44XX_VIRT,
.pfn = __phys_to_pfn(L4_44XX_PHYS),
.length = L4_44XX_SIZE,
.type = MT_DEVICE,
},
{
.virtual = L4_PER_44XX_VIRT,
.pfn = __phys_to_pfn(L4_PER_44XX_PHYS),
.length = L4_PER_44XX_SIZE,
.type = MT_DEVICE,
},
};
#endif
#ifdef CONFIG_SOC_OMAP5
static struct map_desc omap54xx_io_desc[] __initdata = {
{
.virtual = L3_54XX_VIRT,
.pfn = __phys_to_pfn(L3_54XX_PHYS),
.length = L3_54XX_SIZE,
.type = MT_DEVICE,
},
{
.virtual = L4_54XX_VIRT,
.pfn = __phys_to_pfn(L4_54XX_PHYS),
.length = L4_54XX_SIZE,
.type = MT_DEVICE,
},
{
.virtual = L4_WK_54XX_VIRT,
.pfn = __phys_to_pfn(L4_WK_54XX_PHYS),
.length = L4_WK_54XX_SIZE,
.type = MT_DEVICE,
},
{
.virtual = L4_PER_54XX_VIRT,
.pfn = __phys_to_pfn(L4_PER_54XX_PHYS),
.length = L4_PER_54XX_SIZE,
.type = MT_DEVICE,
},
};
#endif
#ifdef CONFIG_SOC_DRA7XX
static struct map_desc dra7xx_io_desc[] __initdata = {
{
.virtual = L4_CFG_MPU_DRA7XX_VIRT,
.pfn = __phys_to_pfn(L4_CFG_MPU_DRA7XX_PHYS),
.length = L4_CFG_MPU_DRA7XX_SIZE,
.type = MT_DEVICE,
},
{
.virtual = L3_MAIN_SN_DRA7XX_VIRT,
.pfn = __phys_to_pfn(L3_MAIN_SN_DRA7XX_PHYS),
.length = L3_MAIN_SN_DRA7XX_SIZE,
.type = MT_DEVICE,
},
{
.virtual = L4_PER1_DRA7XX_VIRT,
.pfn = __phys_to_pfn(L4_PER1_DRA7XX_PHYS),
.length = L4_PER1_DRA7XX_SIZE,
.type = MT_DEVICE,
},
{
.virtual = L4_PER2_DRA7XX_VIRT,
.pfn = __phys_to_pfn(L4_PER2_DRA7XX_PHYS),
.length = L4_PER2_DRA7XX_SIZE,
.type = MT_DEVICE,
},
{
.virtual = L4_PER3_DRA7XX_VIRT,
.pfn = __phys_to_pfn(L4_PER3_DRA7XX_PHYS),
.length = L4_PER3_DRA7XX_SIZE,
.type = MT_DEVICE,
},
{
.virtual = L4_CFG_DRA7XX_VIRT,
.pfn = __phys_to_pfn(L4_CFG_DRA7XX_PHYS),
.length = L4_CFG_DRA7XX_SIZE,
.type = MT_DEVICE,
},
{
.virtual = L4_WKUP_DRA7XX_VIRT,
.pfn = __phys_to_pfn(L4_WKUP_DRA7XX_PHYS),
.length = L4_WKUP_DRA7XX_SIZE,
.type = MT_DEVICE,
},
};
#endif
#ifdef CONFIG_SOC_OMAP2420
void __init omap242x_map_io(void)
{
iotable_init(omap24xx_io_desc, ARRAY_SIZE(omap24xx_io_desc));
iotable_init(omap242x_io_desc, ARRAY_SIZE(omap242x_io_desc));
}
#endif
#ifdef CONFIG_SOC_OMAP2430
void __init omap243x_map_io(void)
{
iotable_init(omap24xx_io_desc, ARRAY_SIZE(omap24xx_io_desc));
iotable_init(omap243x_io_desc, ARRAY_SIZE(omap243x_io_desc));
}
#endif
#ifdef CONFIG_ARCH_OMAP3
void __init omap3_map_io(void)
{
iotable_init(omap34xx_io_desc, ARRAY_SIZE(omap34xx_io_desc));
}
#endif
#ifdef CONFIG_SOC_TI81XX
void __init ti81xx_map_io(void)
{
iotable_init(omapti81xx_io_desc, ARRAY_SIZE(omapti81xx_io_desc));
}
#endif
#if defined(CONFIG_SOC_AM33XX) || defined(CONFIG_SOC_AM43XX)
void __init am33xx_map_io(void)
{
iotable_init(omapam33xx_io_desc, ARRAY_SIZE(omapam33xx_io_desc));
}
#endif
#ifdef CONFIG_ARCH_OMAP4
void __init omap4_map_io(void)
{
iotable_init(omap44xx_io_desc, ARRAY_SIZE(omap44xx_io_desc));
omap_barriers_init();
}
#endif
#ifdef CONFIG_SOC_OMAP5
void __init omap5_map_io(void)
{
iotable_init(omap54xx_io_desc, ARRAY_SIZE(omap54xx_io_desc));
omap_barriers_init();
}
#endif
#ifdef CONFIG_SOC_DRA7XX
void __init dra7xx_map_io(void)
{
iotable_init(dra7xx_io_desc, ARRAY_SIZE(dra7xx_io_desc));
omap_barriers_init();
}
#endif
/*
* omap2_init_reprogram_sdrc - reprogram SDRC timing parameters
*
* Sets the CORE DPLL3 M2 divider to the same value that it's at
* currently. This has the effect of setting the SDRC SDRAM AC timing
* registers to the values currently defined by the kernel. Currently
* only defined for OMAP3; will return 0 if called on OMAP2. Returns
* -EINVAL if the dpll3_m2_ck cannot be found, 0 if called on OMAP2,
* or passes along the return value of clk_set_rate().
*/
static int __init _omap2_init_reprogram_sdrc(void)
{
struct clk *dpll3_m2_ck;
int v = -EINVAL;
long rate;
if (!cpu_is_omap34xx())
return 0;
dpll3_m2_ck = clk_get(NULL, "dpll3_m2_ck");
if (IS_ERR(dpll3_m2_ck))
return -EINVAL;
rate = clk_get_rate(dpll3_m2_ck);
pr_info("Reprogramming SDRC clock to %ld Hz\n", rate);
v = clk_set_rate(dpll3_m2_ck, rate);
if (v)
pr_err("dpll3_m2_clk rate change failed: %d\n", v);
clk_put(dpll3_m2_ck);
return v;
}
static int _set_hwmod_postsetup_state(struct omap_hwmod *oh, void *data)
{
return omap_hwmod_set_postsetup_state(oh, *(u8 *)data);
}
static void __init __maybe_unused omap_hwmod_init_postsetup(void)
{
u8 postsetup_state;
/* Set the default postsetup state for all hwmods */
#ifdef CONFIG_PM
postsetup_state = _HWMOD_STATE_IDLE;
#else
postsetup_state = _HWMOD_STATE_ENABLED;
#endif
omap_hwmod_for_each(_set_hwmod_postsetup_state, &postsetup_state);
}
#ifdef CONFIG_SOC_OMAP2420
void __init omap2420_init_early(void)
{
omap2_set_globals_tap(OMAP242X_CLASS, OMAP2_L4_IO_ADDRESS(0x48014000));
omap2_set_globals_sdrc(OMAP2_L3_IO_ADDRESS(OMAP2420_SDRC_BASE),
OMAP2_L3_IO_ADDRESS(OMAP2420_SMS_BASE));
omap2_control_base_init();
omap2xxx_check_revision();
omap2_prcm_base_init();
omap2xxx_voltagedomains_init();
omap242x_powerdomains_init();
omap242x_clockdomains_init();
omap2420_hwmod_init();
omap_hwmod_init_postsetup();
omap_clk_soc_init = omap2420_dt_clk_init;
rate_table = omap2420_rate_table;
}
void __init omap2420_init_late(void)
{
omap_pm_soc_init = omap2_pm_init;
}
#endif
#ifdef CONFIG_SOC_OMAP2430
void __init omap2430_init_early(void)
{
omap2_set_globals_tap(OMAP243X_CLASS, OMAP2_L4_IO_ADDRESS(0x4900a000));
omap2_set_globals_sdrc(OMAP2_L3_IO_ADDRESS(OMAP243X_SDRC_BASE),
OMAP2_L3_IO_ADDRESS(OMAP243X_SMS_BASE));
omap2_control_base_init();
omap2xxx_check_revision();
omap2_prcm_base_init();
omap2xxx_voltagedomains_init();
omap243x_powerdomains_init();
omap243x_clockdomains_init();
omap2430_hwmod_init();
omap_hwmod_init_postsetup();
omap_clk_soc_init = omap2430_dt_clk_init;
rate_table = omap2430_rate_table;
}
void __init omap2430_init_late(void)
{
omap_pm_soc_init = omap2_pm_init;
}
#endif
/*
* Currently only board-omap3beagle.c should call this because of the
* same machine_id for 34xx and 36xx beagle.. Will get fixed with DT.
*/
#ifdef CONFIG_ARCH_OMAP3
void __init omap3_init_early(void)
{
omap2_set_globals_tap(OMAP343X_CLASS, OMAP2_L4_IO_ADDRESS(0x4830A000));
omap2_set_globals_sdrc(OMAP2_L3_IO_ADDRESS(OMAP343X_SDRC_BASE),
OMAP2_L3_IO_ADDRESS(OMAP343X_SMS_BASE));
omap2_control_base_init();
omap3xxx_check_revision();
omap3xxx_check_features();
omap2_prcm_base_init();
omap3xxx_voltagedomains_init();
omap3xxx_powerdomains_init();
omap3xxx_clockdomains_init();
omap3xxx_hwmod_init();
omap_hwmod_init_postsetup();
}
void __init omap3430_init_early(void)
{
omap3_init_early();
omap_clk_soc_init = omap3430_dt_clk_init;
}
void __init omap35xx_init_early(void)
{
omap3_init_early();
omap_clk_soc_init = omap3430_dt_clk_init;
}
void __init omap3630_init_early(void)
{
omap3_init_early();
omap_clk_soc_init = omap3630_dt_clk_init;
}
void __init am35xx_init_early(void)
{
omap3_init_early();
omap_clk_soc_init = am35xx_dt_clk_init;
}
void __init omap3_init_late(void)
{
omap_pm_soc_init = omap3_pm_init;
}
void __init ti81xx_init_late(void)
{
omap_pm_soc_init = omap_pm_nop_init;
}
#endif
#ifdef CONFIG_SOC_TI81XX
void __init ti814x_init_early(void)
{
omap2_set_globals_tap(TI814X_CLASS,
OMAP2_L4_IO_ADDRESS(TI81XX_TAP_BASE));
omap2_control_base_init();
omap3xxx_check_revision();
ti81xx_check_features();
omap2_prcm_base_init();
omap3xxx_voltagedomains_init();
omap3xxx_powerdomains_init();
ti814x_clockdomains_init();
dm814x_hwmod_init();
omap_hwmod_init_postsetup();
omap_clk_soc_init = dm814x_dt_clk_init;
}
void __init ti816x_init_early(void)
{
omap2_set_globals_tap(TI816X_CLASS,
OMAP2_L4_IO_ADDRESS(TI81XX_TAP_BASE));
omap2_control_base_init();
omap3xxx_check_revision();
ti81xx_check_features();
omap2_prcm_base_init();
omap3xxx_voltagedomains_init();
omap3xxx_powerdomains_init();
ti816x_clockdomains_init();
dm816x_hwmod_init();
omap_hwmod_init_postsetup();
omap_clk_soc_init = dm816x_dt_clk_init;
}
#endif
#ifdef CONFIG_SOC_AM33XX
void __init am33xx_init_early(void)
{
omap2_set_globals_tap(AM335X_CLASS,
AM33XX_L4_WK_IO_ADDRESS(AM33XX_TAP_BASE));
omap2_control_base_init();
omap3xxx_check_revision();
am33xx_check_features();
omap2_prcm_base_init();
am33xx_powerdomains_init();
am33xx_clockdomains_init();
am33xx_hwmod_init();
omap_hwmod_init_postsetup();
omap_clk_soc_init = am33xx_dt_clk_init;
}
void __init am33xx_init_late(void)
{
omap_pm_soc_init = amx3_common_pm_init;
}
#endif
#ifdef CONFIG_SOC_AM43XX
void __init am43xx_init_early(void)
{
omap2_set_globals_tap(AM335X_CLASS,
AM33XX_L4_WK_IO_ADDRESS(AM33XX_TAP_BASE));
omap2_control_base_init();
omap3xxx_check_revision();
am33xx_check_features();
omap2_prcm_base_init();
am43xx_powerdomains_init();
am43xx_clockdomains_init();
am43xx_hwmod_init();
omap_hwmod_init_postsetup();
omap_l2_cache_init();
omap_clk_soc_init = am43xx_dt_clk_init;
}
void __init am43xx_init_late(void)
{
omap_pm_soc_init = amx3_common_pm_init;
}
#endif
#ifdef CONFIG_ARCH_OMAP4
void __init omap4430_init_early(void)
{
omap2_set_globals_tap(OMAP443X_CLASS,
OMAP2_L4_IO_ADDRESS(OMAP443X_SCM_BASE));
omap2_set_globals_prcm_mpu(OMAP2_L4_IO_ADDRESS(OMAP4430_PRCM_MPU_BASE));
omap2_control_base_init();
omap4xxx_check_revision();
omap4xxx_check_features();
omap2_prcm_base_init();
omap4_sar_ram_init();
omap4_mpuss_early_init();
omap4_pm_init_early();
omap44xx_voltagedomains_init();
omap44xx_powerdomains_init();
omap44xx_clockdomains_init();
omap44xx_hwmod_init();
omap_hwmod_init_postsetup();
omap_l2_cache_init();
omap_clk_soc_init = omap4xxx_dt_clk_init;
}
void __init omap4430_init_late(void)
{
omap_pm_soc_init = omap4_pm_init;
}
#endif
#ifdef CONFIG_SOC_OMAP5
void __init omap5_init_early(void)
{
omap2_set_globals_tap(OMAP54XX_CLASS,
OMAP2_L4_IO_ADDRESS(OMAP54XX_SCM_BASE));
omap2_set_globals_prcm_mpu(OMAP2_L4_IO_ADDRESS(OMAP54XX_PRCM_MPU_BASE));
omap2_control_base_init();
omap2_prcm_base_init();
omap5xxx_check_revision();
omap4_sar_ram_init();
omap4_mpuss_early_init();
omap4_pm_init_early();
omap54xx_voltagedomains_init();
omap54xx_powerdomains_init();
omap54xx_clockdomains_init();
omap54xx_hwmod_init();
omap_hwmod_init_postsetup();
omap_clk_soc_init = omap5xxx_dt_clk_init;
}
void __init omap5_init_late(void)
{
omap_pm_soc_init = omap4_pm_init;
}
#endif
#ifdef CONFIG_SOC_DRA7XX
void __init dra7xx_init_early(void)
{
omap2_set_globals_tap(DRA7XX_CLASS,
OMAP2_L4_IO_ADDRESS(DRA7XX_TAP_BASE));
omap2_set_globals_prcm_mpu(OMAP2_L4_IO_ADDRESS(OMAP54XX_PRCM_MPU_BASE));
omap2_control_base_init();
omap4_pm_init_early();
omap2_prcm_base_init();
dra7xxx_check_revision();
dra7xx_powerdomains_init();
dra7xx_clockdomains_init();
dra7xx_hwmod_init();
omap_hwmod_init_postsetup();
omap_clk_soc_init = dra7xx_dt_clk_init;
}
void __init dra7xx_init_late(void)
{
omap_pm_soc_init = omap4_pm_init;
}
#endif
void __init omap_sdrc_init(struct omap_sdrc_params *sdrc_cs0,
struct omap_sdrc_params *sdrc_cs1)
{
omap_sram_init();
if (cpu_is_omap24xx() || omap3_has_sdrc()) {
omap2_sdrc_init(sdrc_cs0, sdrc_cs1);
_omap2_init_reprogram_sdrc();
}
}
int __init omap_clk_init(void)
{
int ret = 0;
if (!omap_clk_soc_init)
return 0;
ti_clk_init_features();
omap2_clk_setup_ll_ops();
ret = omap_control_init();
if (ret)
return ret;
ret = omap_prcm_init();
if (ret)
return ret;
of_clk_init(NULL);
ti_dt_clk_init_retry_clks();
ti_dt_clockdomains_setup();
ret = omap_clk_soc_init();
return ret;
}
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