diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/cpu/armv7/mx6/soc.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv7/mx6/soc.c b/arch/arm/cpu/armv7/mx6/soc.c index 4689924..c725fca 100644 --- a/arch/arm/cpu/armv7/mx6/soc.c +++ b/arch/arm/cpu/armv7/mx6/soc.c @@ -477,6 +477,15 @@ int arch_cpu_init(void) * drain 100K (0x0000b8a0). */ writel(0x0000b8a0, IOMUXC_BASE_ADDR + 0x29c); + } else { + /* + * From TO1.1, SNVS adds internal pull up control for POR_B, + * the register filed is GPBIT[1:0], after system boot up, + * it can be set to 2b'01 to disable internal pull up. + * It can save about 30uA power in SNVS mode. + */ + writel((readl(SNVS_LP_BASE_ADDR + 0x10) & (~0x1400)) | 0x400, + SNVS_LP_BASE_ADDR + 0x10); } #endif |