diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/cpu/armv7/mx6/soc.c | 29 |
1 files changed, 21 insertions, 8 deletions
diff --git a/arch/arm/cpu/armv7/mx6/soc.c b/arch/arm/cpu/armv7/mx6/soc.c index 09f2b02..7b53bfd 100644 --- a/arch/arm/cpu/armv7/mx6/soc.c +++ b/arch/arm/cpu/armv7/mx6/soc.c @@ -362,14 +362,27 @@ int arch_cpu_init(void) set_ahb_rate(132000000); } - if (is_mx6ul() && is_soc_rev(CHIP_REV_1_0) == 0) { - /* - * According to the design team's requirement on i.MX6UL, - * the PMIC_STBY_REQ PAD should be configured as open - * drain 100K (0x0000b8a0). - * Only exists on TO1.0 - */ - writel(0x0000b8a0, IOMUXC_BASE_ADDR + 0x29c); + if (is_mx6ul()) { + if (is_soc_rev(CHIP_REV_1_0) == 0) { + /* + * According to the design team's requirement on + * i.MX6UL,the PMIC_STBY_REQ PAD should be configured + * as open drain 100K (0x0000b8a0). + * Only exists on TO1.0 + */ + 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(MX6UL_SNVS_LP_BASE_ADDR + 0x10) & + (~0x1400)) | 0x400, + MX6UL_SNVS_LP_BASE_ADDR + 0x10); + } } if (is_mx6ull()) { |