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ARM: ux500: prcmu db8500 v2 support 

This patch adds support for db8500 chip version 2.
The TCDM memory address of the PRCMU is changed and
dynamic detection of that is added.

Signed-off-by: Mattias Wallin <mattias.wallin@stericsson.com>
Acked-by: Linus Walleij <linus.walleij@stericsson.com>
This commit is contained in:
Mattias Wallin 2010-12-02 16:20:42 +01:00 committed by Linus Walleij
parent fbf1eadf95
commit fcbd458e95
5 changed files with 37 additions and 12 deletions
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18
arch/arm/mach-ux500/cpu-db8500.c
View File

@ -40,7 +40,6 @@ static struct platform_device *platform_devs[] __initdata = {
/* minimum static i/o mapping required to boot U8500 platforms */
static struct map_desc u8500_io_desc[] __initdata = {
__IO_DEV_DESC(U8500_PRCMU_BASE, SZ_4K),
__IO_DEV_DESC(U8500_PRCMU_TCDM_BASE, SZ_4K),
__IO_DEV_DESC(U8500_GPIO0_BASE, SZ_4K),
__IO_DEV_DESC(U8500_GPIO1_BASE, SZ_4K),
__IO_DEV_DESC(U8500_GPIO2_BASE, SZ_4K),
@ -48,13 +47,18 @@ static struct map_desc u8500_io_desc[] __initdata = {
__MEM_DEV_DESC(U8500_BOOT_ROM_BASE, SZ_1M),
};
static struct map_desc u8500ed_io_desc[] __initdata = {
static struct map_desc u8500_ed_io_desc[] __initdata = {
__IO_DEV_DESC(U8500_MTU0_BASE_ED, SZ_4K),
__IO_DEV_DESC(U8500_CLKRST7_BASE_ED, SZ_8K),
};
static struct map_desc u8500v1_io_desc[] __initdata = {
static struct map_desc u8500_v1_io_desc[] __initdata = {
__IO_DEV_DESC(U8500_MTU0_BASE, SZ_4K),
__IO_DEV_DESC(U8500_PRCMU_TCDM_BASE_V1, SZ_4K),
};
static struct map_desc u8500_v2_io_desc[] __initdata = {
__IO_DEV_DESC(U8500_PRCMU_TCDM_BASE, SZ_4K),
};
/*
@ -127,9 +131,11 @@ void __init u8500_map_io(void)
iotable_init(u8500_io_desc, ARRAY_SIZE(u8500_io_desc));
if (cpu_is_u8500ed())
iotable_init(u8500ed_io_desc, ARRAY_SIZE(u8500ed_io_desc));
else
iotable_init(u8500v1_io_desc, ARRAY_SIZE(u8500v1_io_desc));
iotable_init(u8500_ed_io_desc, ARRAY_SIZE(u8500_ed_io_desc));
else if (cpu_is_u8500v1())
iotable_init(u8500_v1_io_desc, ARRAY_SIZE(u8500_v1_io_desc));
else if (cpu_is_u8500v2())
iotable_init(u8500_v2_io_desc, ARRAY_SIZE(u8500_v2_io_desc));
/* Read out the ASIC ID as early as we can */
get_db8500_asic_id();

2
arch/arm/mach-ux500/cpu.c
View File

@ -19,6 +19,7 @@
#include <mach/hardware.h>
#include <mach/setup.h>
#include <mach/devices.h>
#include <mach/prcmu.h>
#include "clock.h"
@ -58,6 +59,7 @@ void __init ux500_init_irq(void)
* Init clocks here so that they are available for system timer
* initialization.
*/
prcmu_early_init();
clk_init();
}

3
arch/arm/mach-ux500/include/mach/db8500-regs.h
View File

@ -92,7 +92,8 @@
#define U8500_SCR_BASE (U8500_PER4_BASE + 0x05000)
#define U8500_DMC_BASE (U8500_PER4_BASE + 0x06000)
#define U8500_PRCMU_BASE (U8500_PER4_BASE + 0x07000)
#define U8500_PRCMU_TCDM_BASE (U8500_PER4_BASE + 0x0f000)
#define U8500_PRCMU_TCDM_BASE_V1 (U8500_PER4_BASE + 0x0f000)
#define U8500_PRCMU_TCDM_BASE (U8500_PER4_BASE + 0x68000)
/* per3 base addresses */
#define U8500_FSMC_BASE (U8500_PER3_BASE + 0x0000)

1
arch/arm/mach-ux500/include/mach/prcmu.h
View File

@ -9,6 +9,7 @@
#ifndef __MACH_PRCMU_H
#define __MACH_PRCMU_H
void __init prcmu_early_init(void);
int prcmu_abb_read(u8 slave, u8 reg, u8 *value, u8 size);
int prcmu_abb_write(u8 slave, u8 reg, u8 *value, u8 size);

25
arch/arm/mach-ux500/prcmu.c
View File

@ -20,10 +20,11 @@
#include <mach/hardware.h>
#include <mach/prcmu-regs.h>
#define PRCMU_TCDM_BASE __io_address(U8500_PRCMU_TCDM_BASE)
/* Global var to runtime determine TCDM base for v2 or v1 */
static __iomem void *tcdm_base;
#define REQ_MB5 (PRCMU_TCDM_BASE + 0xE44)
#define ACK_MB5 (PRCMU_TCDM_BASE + 0xDF4)
#define REQ_MB5 (tcdm_base + 0xE44)
#define ACK_MB5 (tcdm_base + 0xDF4)
#define REQ_MB5_I2C_SLAVE_OP (REQ_MB5)
#define REQ_MB5_I2C_HW_BITS (REQ_MB5 + 1)
@ -33,8 +34,10 @@
#define ACK_MB5_I2C_STATUS (ACK_MB5 + 1)
#define ACK_MB5_I2C_VAL (ACK_MB5 + 3)
#define I2C_WRITE(slave) ((slave) << 1)
#define I2C_READ(slave) (((slave) << 1) | BIT(0))
#define I2C_WRITE(slave) \
(((slave) << 1) | (cpu_is_u8500v2() ? BIT(6) : 0))
#define I2C_READ(slave) \
(((slave) << 1) | (cpu_is_u8500v2() ? BIT(6) : 0) | BIT(0))
#define I2C_STOP_EN BIT(3)
enum ack_mb5_status {
@ -217,6 +220,18 @@ static irqreturn_t prcmu_irq_handler(int irq, void *data)
return IRQ_HANDLED;
}
void __init prcmu_early_init(void)
{
if (cpu_is_u8500v11() || cpu_is_u8500ed()) {
tcdm_base = __io_address(U8500_PRCMU_TCDM_BASE_V1);
} else if (cpu_is_u8500v2()) {
tcdm_base = __io_address(U8500_PRCMU_TCDM_BASE);
} else {
pr_err("prcmu: Unsupported chip version\n");
BUG();
}
}
static int __init prcmu_init(void)
{
mutex_init(&mb5_transfer.lock);