AT91: reset: extend alternate reset procedure to several chips

Several at91sam9 chips need the alternate reset procedure to be sure to halt
SDRAM smoothly before resetting the chip.
This is an extension of previous patch "Fix AT91SAM9G20 reset" to all chips
affected.

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>

diff --git a/arch/arm/mach-at91/Makefile b/arch/arm/mach-at91/Makefile
index c94485227b099566b67e5e6ad7e841d27cc3ba23..821eb842795f137d94a2904ffe5d1db827dca4bf 100644 (file)
--- a/arch/arm/mach-at91/Makefile
+++ b/arch/arm/mach-at91/Makefile
@@ -11,11 +11,11 @@ obj-$(CONFIG_AT91_PMC_UNIT) += clock.o
 
 # CPU-specific support
 obj-$(CONFIG_ARCH_AT91RM9200)  += at91rm9200.o at91rm9200_time.o at91rm9200_devices.o
-obj-$(CONFIG_ARCH_AT91SAM9260) += at91sam9260.o at91sam926x_time.o at91sam9260_devices.o sam9_smc.o
-obj-$(CONFIG_ARCH_AT91SAM9261) += at91sam9261.o at91sam926x_time.o at91sam9261_devices.o sam9_smc.o
-obj-$(CONFIG_ARCH_AT91SAM9G10) += at91sam9261.o at91sam926x_time.o at91sam9261_devices.o sam9_smc.o
-obj-$(CONFIG_ARCH_AT91SAM9263) += at91sam9263.o at91sam926x_time.o at91sam9263_devices.o sam9_smc.o
-obj-$(CONFIG_ARCH_AT91SAM9RL)  += at91sam9rl.o at91sam926x_time.o at91sam9rl_devices.o sam9_smc.o
+obj-$(CONFIG_ARCH_AT91SAM9260) += at91sam9260.o at91sam926x_time.o at91sam9260_devices.o sam9_smc.o at91sam9_alt_reset.o
+obj-$(CONFIG_ARCH_AT91SAM9261) += at91sam9261.o at91sam926x_time.o at91sam9261_devices.o sam9_smc.o at91sam9_alt_reset.o
+obj-$(CONFIG_ARCH_AT91SAM9G10) += at91sam9261.o at91sam926x_time.o at91sam9261_devices.o sam9_smc.o at91sam9_alt_reset.o
+obj-$(CONFIG_ARCH_AT91SAM9263) += at91sam9263.o at91sam926x_time.o at91sam9263_devices.o sam9_smc.o at91sam9_alt_reset.o
+obj-$(CONFIG_ARCH_AT91SAM9RL)  += at91sam9rl.o at91sam926x_time.o at91sam9rl_devices.o sam9_smc.o at91sam9_alt_reset.o
 obj-$(CONFIG_ARCH_AT91SAM9G20) += at91sam9260.o at91sam926x_time.o at91sam9260_devices.o sam9_smc.o at91sam9_alt_reset.o
 obj-$(CONFIG_ARCH_AT91SAM9G45) += at91sam9g45.o at91sam926x_time.o at91sam9g45_devices.o sam9_smc.o
 obj-$(CONFIG_ARCH_AT91CAP9)    += at91cap9.o at91sam926x_time.o at91cap9_devices.o sam9_smc.o

diff --git a/arch/arm/mach-at91/at91sam9260.c b/arch/arm/mach-at91/at91sam9260.c
index dfd3529cd101225ed9b97d5d2e839ffc11ba665d..195208b30024cff807656304c1aef3bf833d8f83 100644 (file)
--- a/arch/arm/mach-at91/at91sam9260.c
+++ b/arch/arm/mach-at91/at91sam9260.c
@@ -25,8 +25,6 @@
 #include "generic.h"
 #include "clock.h"
 
-extern void at91sam9_alt_reset(void);
-
 static struct map_desc at91sam9260_io_desc[] __initdata = {
        {
                .virtual        = AT91_VA_BASE_SYS,
@@ -281,11 +279,6 @@ static struct at91_gpio_bank at91sam9260_gpio[] = {
        }
 };
 
-static void at91sam9260_reset(void)
-{
-       at91_sys_write(AT91_RSTC_CR, AT91_RSTC_KEY | AT91_RSTC_PROCRST | AT91_RSTC_PERRST);
-}
-
 static void at91sam9260_poweroff(void)
 {
        at91_sys_write(AT91_SHDW_CR, AT91_SHDW_KEY | AT91_SHDW_SHDW);
@@ -329,11 +322,7 @@ void __init at91sam9260_initialize(unsigned long main_clock)
        else
                iotable_init(at91sam9260_sram_desc, ARRAY_SIZE(at91sam9260_sram_desc));
 
-       if (cpu_is_at91sam9g20())
-               at91_arch_reset = at91sam9_alt_reset;
-       else
-               at91_arch_reset = at91sam9260_reset;
-
+       at91_arch_reset = at91sam9_alt_reset;
        pm_power_off = at91sam9260_poweroff;
        at91_extern_irq = (1 << AT91SAM9260_ID_IRQ0) | (1 << AT91SAM9260_ID_IRQ1)
                        | (1 << AT91SAM9260_ID_IRQ2);

diff --git a/arch/arm/mach-at91/at91sam9261.c b/arch/arm/mach-at91/at91sam9261.c
index 4ecf37996c770faf83e48d93cf707ef4dd90fc45..fcad88668504bde5331b764419b0676fa89edc68 100644 (file)
--- a/arch/arm/mach-at91/at91sam9261.c
+++ b/arch/arm/mach-at91/at91sam9261.c
@@ -257,11 +257,6 @@ static struct at91_gpio_bank at91sam9261_gpio[] = {
        }
 };
 
-static void at91sam9261_reset(void)
-{
-       at91_sys_write(AT91_RSTC_CR, AT91_RSTC_KEY | AT91_RSTC_PROCRST | AT91_RSTC_PERRST);
-}
-
 static void at91sam9261_poweroff(void)
 {
        at91_sys_write(AT91_SHDW_CR, AT91_SHDW_KEY | AT91_SHDW_SHDW);
@@ -283,7 +278,7 @@ void __init at91sam9261_initialize(unsigned long main_clock)
                iotable_init(at91sam9261_sram_desc, ARRAY_SIZE(at91sam9261_sram_desc));
 
 
-       at91_arch_reset = at91sam9261_reset;
+       at91_arch_reset = at91sam9_alt_reset;
        pm_power_off = at91sam9261_poweroff;
        at91_extern_irq = (1 << AT91SAM9261_ID_IRQ0) | (1 << AT91SAM9261_ID_IRQ1)
                        | (1 << AT91SAM9261_ID_IRQ2);

diff --git a/arch/arm/mach-at91/at91sam9263.c b/arch/arm/mach-at91/at91sam9263.c
index 942792d630d8c457ed6bf0051babba6dea36a83c..249f900954d8b08c05078c5a7ed0cf57d53255d6 100644 (file)
--- a/arch/arm/mach-at91/at91sam9263.c
+++ b/arch/arm/mach-at91/at91sam9263.c
@@ -269,11 +269,6 @@ static struct at91_gpio_bank at91sam9263_gpio[] = {
        }
 };
 
-static void at91sam9263_reset(void)
-{
-       at91_sys_write(AT91_RSTC_CR, AT91_RSTC_KEY | AT91_RSTC_PROCRST | AT91_RSTC_PERRST);
-}
-
 static void at91sam9263_poweroff(void)
 {
        at91_sys_write(AT91_SHDW_CR, AT91_SHDW_KEY | AT91_SHDW_SHDW);
@@ -289,7 +284,7 @@ void __init at91sam9263_initialize(unsigned long main_clock)
        /* Map peripherals */
        iotable_init(at91sam9263_io_desc, ARRAY_SIZE(at91sam9263_io_desc));
 
-       at91_arch_reset = at91sam9263_reset;
+       at91_arch_reset = at91sam9_alt_reset;
        pm_power_off = at91sam9263_poweroff;
        at91_extern_irq = (1 << AT91SAM9263_ID_IRQ0) | (1 << AT91SAM9263_ID_IRQ1);
 

diff --git a/arch/arm/mach-at91/at91sam9rl.c b/arch/arm/mach-at91/at91sam9rl.c
index 211c5c14a1e605d6d4835203c798b9bc47419c9f..6a9d24e5ed8e412680c2364208c46b820959f236 100644 (file)
--- a/arch/arm/mach-at91/at91sam9rl.c
+++ b/arch/arm/mach-at91/at91sam9rl.c
@@ -242,11 +242,6 @@ static struct at91_gpio_bank at91sam9rl_gpio[] = {
        }
 };
 
-static void at91sam9rl_reset(void)
-{
-       at91_sys_write(AT91_RSTC_CR, AT91_RSTC_KEY | AT91_RSTC_PROCRST | AT91_RSTC_PERRST);
-}
-
 static void at91sam9rl_poweroff(void)
 {
        at91_sys_write(AT91_SHDW_CR, AT91_SHDW_KEY | AT91_SHDW_SHDW);
@@ -281,7 +276,7 @@ void __init at91sam9rl_initialize(unsigned long main_clock)
        /* Map SRAM */
        iotable_init(at91sam9rl_sram_desc, ARRAY_SIZE(at91sam9rl_sram_desc));
 
-       at91_arch_reset = at91sam9rl_reset;
+       at91_arch_reset = at91sam9_alt_reset;
        pm_power_off = at91sam9rl_poweroff;
        at91_extern_irq = (1 << AT91SAM9RL_ID_IRQ0);
 

diff --git a/arch/arm/mach-at91/generic.h b/arch/arm/mach-at91/generic.h
index 65c3dc5ba0d0c608e649565121ac59e3ce4d1159..0c66deb2db39a990646d833da4c751e7fc28e81c 100644 (file)
--- a/arch/arm/mach-at91/generic.h
+++ b/arch/arm/mach-at91/generic.h
@@ -46,6 +46,9 @@ extern void __init at91_clock_associate(const char *id, struct device *dev, cons
 extern void at91_irq_suspend(void);
 extern void at91_irq_resume(void);
 
+/* reset */
+extern void at91sam9_alt_reset(void);
+
  /* GPIO */
 #define AT91RM9200_PQFP                3       /* AT91RM9200 PQFP package has 3 banks */
 #define AT91RM9200_BGA         4       /* AT91RM9200 BGA package has 4 banks */