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| author | Lily Zhang <r58066@freescale.com> | 2011-05-16 20:19:18 +0800 |
|---|---|---|
| committer | Lily Zhang <r58066@freescale.com> | 2011-05-16 20:26:37 +0800 |
| commit | a966404abb18c1a5c39474d7cd59a0ae88c77d98 (patch) | |
| tree | 5e848eef84b14475a8fd31ed4ab6933a47a2c003 | |
| parent | a13df91f7df050a824cb5960b11584b8c467d614 (diff) | |
| download | u-boot-imx-a966404abb18c1a5c39474d7cd59a0ae88c77d98.zip u-boot-imx-a966404abb18c1a5c39474d7cd59a0ae88c77d98.tar.gz u-boot-imx-a966404abb18c1a5c39474d7cd59a0ae88c77d98.tar.bz2 | |
ENGR00143469 mx53 smd: pull down GPIO_9 to reset the board
In mx53 smd, to type "reset" command in u-boot console can
not reset the system. It hangs in ROM with unknown reason.
This patch adds one workaround to configure GPIO_9 (WDT_OUTPUT_B)
as GPIO and pull down it to reset DA9053 PMIC.
Signed-off-by: Lily Zhang <r58066@freescale.com>
| -rw-r--r-- | cpu/arm_cortexa8/mx53/interrupts.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/cpu/arm_cortexa8/mx53/interrupts.c b/cpu/arm_cortexa8/mx53/interrupts.c index 0cc24db..a39e7ff 100644 --- a/cpu/arm_cortexa8/mx53/interrupts.c +++ b/cpu/arm_cortexa8/mx53/interrupts.c @@ -36,10 +36,25 @@ int interrupt_init(void) void reset_cpu(ulong addr) { +#if defined(CONFIG_MX53_SMD) + unsigned int reg; +#endif + /* de-select SS0 of instance: eCSPI1 */ mxc_request_iomux(MX53_PIN_EIM_EB2, IOMUX_CONFIG_ALT1); /* de-select SS1 of instance: eCSPI1 */ mxc_request_iomux(MX53_PIN_EIM_D19, IOMUX_CONFIG_ALT1); +#if defined(CONFIG_MX53_SMD) + /* GPIO_1_9 */ + reg = readl(GPIO1_BASE_ADDR + 0x4); + reg |= (0x1 << 9); + writel(reg, GPIO1_BASE_ADDR + 0x4); + + reg = readl(GPIO1_BASE_ADDR); + reg &= ~0x200; + writel(reg, GPIO1_BASE_ADDR); +#else __REG16(WDOG1_BASE_ADDR) = 4; +#endif } |