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 <chenjianhong@rock-chips.com>

diff --git a/drivers/mfd/rk818.c b/drivers/mfd/rk818.c
index aabee82ae19b88f6f03850730bed500a2f8423ff..5b69cdeba18c8e28a2e30e83ff064406d18fd746 100755 (executable)
--- 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;
 }