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| author | Chenhui Zhao <chenhui.zhao@freescale.com> | 2015-03-04 06:13:06 (GMT) |
|---|---|---|
| committer | Zhengxiong Jin <Jason.Jin@freescale.com> | 2015-03-05 06:59:44 (GMT) |
| commit | 42daf8575d06ae4f2280fa49b2a80b50dab92da1 (patch) | |
| tree | a9beb95cce74520dd230caabed6672a0afd68332 /arch | |
| parent | 110fee40717448dabc340476f6942c41c5fa20c7 (diff) | |
| download | linux-fsl-qoriq-42daf8575d06ae4f2280fa49b2a80b50dab92da1.tar.xz | |
arm: ls1021a: OCRAM1 does not power down in deep sleep
In the case of SD boot, system can't wake from deep sleep
if OCRAM1 is powered down. Therefore, keep it on when doing
deep sleep.
Signed-off-by: Chenhui Zhao <chenhui.zhao@freescale.com>
Change-Id: Ib5f6b1c46f7c66e83595fc4fbe17789e557adee9
Reviewed-on: http://git.am.freescale.net:8181/31996
Tested-by: Review Code-CDREVIEW <CDREVIEW@freescale.com>
Reviewed-by: Yuantian Tang <yuantian.tang@freescale.com>
Reviewed-by: Zhengxiong Jin <Jason.Jin@freescale.com>
Diffstat (limited to 'arch')
| -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) |