diff options
| -rw-r--r-- | arch/arm/mach-imx/pm-ls1.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/arch/arm/mach-imx/pm-ls1.c b/arch/arm/mach-imx/pm-ls1.c index b5d0f7d..f239b67 100644 --- a/arch/arm/mach-imx/pm-ls1.c +++ b/arch/arm/mach-imx/pm-ls1.c @@ -62,6 +62,7 @@ #define CCSR_RCPM_IPPDEXPCR1 0x144 #define CCSR_RCPM_IPPDEXPCR1_LPUART 0x40000000 #define CCSR_RCPM_IPPDEXPCR1_FLEXTIMER 0x20000000 +#define CCSR_RCPM_IPPDEXPCR1_OCRAM1 0x10000000 #define QIXIS_CTL_SYS 0x5 #define QIXIS_CTL_SYS_EVTSW_MASK 0x0c @@ -187,7 +188,12 @@ static void ls1_clear_pmc_int(void) static void ls1_set_powerdown(void) { iowrite32be(ippdexpcr0, ls1_pm_base.rcpm + CCSR_RCPM_IPPDEXPCR0); - iowrite32be(ippdexpcr1, ls1_pm_base.rcpm + CCSR_RCPM_IPPDEXPCR1); + /* + * In the case of SD boot, system can't wake from deep sleep + * if OCRAM1 is powered down. Therefore, keep it on. + */ + ippdexpcr1 |= CCSR_RCPM_IPPDEXPCR1_OCRAM1; + iowrite32be(ippdexpcr1, ls1_pm_base.rcpm + CCSR_RCPM_IPPDEXPCR1); } static void ls1_save_ddr(void *base) |