From: zhangqing <zhangqing@rock-chips.com>
Date: Tue, 14 Jul 2015 15:19:40 +0000 (-0700)
Subject: rk3x:pmic: rk818:enable hdmi5v in sleep mode and improve buck efficiency
X-Git-Tag: firefly_0821_release~3900
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=6e30d4ffb7abedddbed8b461746a596d51aac941;p=firefly-linux-kernel-4.4.55.git

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 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;
 }