From 6e30d4ffb7abedddbed8b461746a596d51aac941 Mon Sep 17 00:00:00 2001 From: zhangqing Date: Tue, 14 Jul 2015 08:19:40 -0700 Subject: [PATCH] rk3x:pmic: rk818:enable hdmi5v in sleep mode and improve buck efficiency enable hdmi5v in sleep mode for low power. improve buck efficiency for low power. Signed-off-by: chenjianhong --- drivers/mfd/rk818.c | 17 +++++++++++++++-- 1 file changed, 15 insertions(+), 2 deletions(-) diff --git a/drivers/mfd/rk818.c b/drivers/mfd/rk818.c index aabee82ae19b..5b69cdeba18c 100755 --- a/drivers/mfd/rk818.c +++ b/drivers/mfd/rk818.c @@ -1169,15 +1169,28 @@ static int rk818_pre_init(struct rk818 *rk818) ret = rk818_clear_bits(rk818, RK818_INT_STS_MSK_REG1,(0x3<<5)); //open rtc int when power on ret = rk818_set_bits(rk818, RK818_RTC_INT_REG,(0x1<<3),(0x1<<3)); //open rtc int when power on - /*****disable otg and boost when in sleep mode****/ + /*****disable otg when in sleep mode****/ val = rk818_reg_read(rk818, RK818_SLEEP_SET_OFF_REG1); - val |= ((0x1 << 7) | (0x1 << 4)); + val |= (0x1 << 7); ret = rk818_reg_write(rk818, RK818_SLEEP_SET_OFF_REG1, val); if (ret < 0) { pr_err("Unable to write RK818_SLEEP_SET_OFF_REG1 reg\n"); return ret; } + /*************** improve efficiency **********************/ + ret = rk818_reg_write(rk818, RK818_BUCK2_CONFIG_REG, 0x1c); + if (ret < 0) { + pr_err("Unable to write RK818_BUCK2_CONFIG_REG reg\n"); + return ret; + } + + ret = rk818_reg_write(rk818, RK818_BUCK4_CONFIG_REG, 0x04); + if (ret < 0) { + pr_err("Unable to write RK818_BUCK4_CONFIG_REG reg\n"); + return ret; + } + return 0; } -- 2.34.1