diff options
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/cpu/armv7/mx6/soc.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv7/mx6/soc.c b/arch/arm/cpu/armv7/mx6/soc.c index 2eee6e9a2d..486b870312 100644 --- a/arch/arm/cpu/armv7/mx6/soc.c +++ b/arch/arm/cpu/armv7/mx6/soc.c @@ -93,6 +93,20 @@ void init_aips(void) writel(0x00000000, &aips2->opacr4); } +static void clear_ldo_ramp(void) +{ + struct anatop_regs *anatop = (struct anatop_regs *)ANATOP_BASE_ADDR; + int reg; + + /* ROM may modify LDO ramp up time according to fuse setting, so in + * order to be in the safe side we neeed to reset these settings to + * match the reset value: 0'b00 + */ + reg = readl(&anatop->ana_misc2); + reg &= ~(0x3f << 24); + writel(reg, &anatop->ana_misc2); +} + /* * Set the VDDSOC * @@ -113,6 +127,8 @@ static void set_vddsoc(u32 mv) else val = (mv - 700) / 25; + clear_ldo_ramp(); + /* * Mask out the REG_CORE[22:18] bits (REG2_TRIG) * and set them to the calculated value (0.7V + val * 0.25V) |