From ef7be38dda56059775c96408938657123b7cc8f8 Mon Sep 17 00:00:00 2001
From: Octav Zlatior <octav.zlatior@theobroma-systems.com>
Date: Mon, 11 May 2015 17:34:31 +0200
Subject: ARM: sun6i: set cpu operating points and ramp-rate

* operating points for different frequencies with voltages set to optimize
  power consumption
* clock latency and ramp-rate: these values seem to provide enough time for
  the voltage to adjust before frequency changes

Signed-off-by: Octav Zlatior <octav.zlatior@theobroma-systems.com>
---
 arch/arm/boot/dts/sun6i-a31-pangolin.dts | 24 ++++++++++++++----------
 1 file changed, 14 insertions(+), 10 deletions(-)

diff --git a/arch/arm/boot/dts/sun6i-a31-pangolin.dts b/arch/arm/boot/dts/sun6i-a31-pangolin.dts
index 249f4b1b6006..06024744bb9f 100644
--- a/arch/arm/boot/dts/sun6i-a31-pangolin.dts
+++ b/arch/arm/boot/dts/sun6i-a31-pangolin.dts
@@ -81,14 +81,17 @@
 &cpu0 {
 	cpu-supply = <&vdd_cpu>;
 	operating-points = <
-		/* kHz    uV */
-		1008000	1200000
-		864000  1200000
-		720000  1100000
-		480000  1000000
-		240000  1000000
-		120000  1000000
+		/* kHz	uV */
+		1200000 1320000
+		1080000 1220000
+		 832000 1120000
+		 600000 1020000
+		 480000  980000
+		 360000  980000
+		 240000  980000
+		 120000  940000
 		>;
+	clock-latency = <300000>;
 };
 
 &ehci0 {
@@ -127,7 +130,7 @@
 	pinctrl-names = "default";
 	pinctrl-0 = <&i2c0_pins_a>;
 	/* pull-ups and devices require AXP221 DLDO3 */
-	status = "failed";
+	status = "okay";
 };
 
 &i2c1 {
@@ -238,10 +241,11 @@
 			};
 
 			vdd_cpu: dcdc3 {
-				regulator-min-microvolt = <900000>;
-				regulator-max-microvolt = <1300000>;
+				regulator-min-microvolt = <600000>;
+				regulator-max-microvolt = <1350000>;
 				regulator-always-on;
 				regulator-name = "vdd-cpu";
+				regulator-ramp-delay = <50>;
 			};
 
 			vdd_system: dcdc4 {
-- 
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