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[3/3] ARM: dts: sun4i: Add AXP209 PMU regulators for pcDuino1/2

Message ID 1443985128-23137-4-git-send-email-siarhei.siamashka@gmail.com (mailing list archive)
State New, archived
Headers show

Commit Message

Siarhei Siamashka Oct. 4, 2015, 6:58 p.m. UTC 
This allows voltage-scaling with cpufreq-dt. The reliability of
voltage-scaling has been checked by reducing the voltage of all
operating points by 0.025V (for extra safety headroom) and running
libjpeg-turbo decoding tests on 5 pcDuino2 boards. It means that
the standard sun4i voltages should be perfectly fine too.

Signed-off-by: Siarhei Siamashka <siarhei.siamashka@gmail.com>
---
 arch/arm/boot/dts/sun4i-a10-pcduino.dts | 35 +++++++++++++++++++++++++++++----
 1 file changed, 31 insertions(+), 4 deletions(-)

Comments

Maxime Ripard Oct. 5, 2015, 12:56 p.m. UTC | #1 
On Sun, Oct 04, 2015 at 09:58:48PM +0300, Siarhei Siamashka wrote:
> This allows voltage-scaling with cpufreq-dt. The reliability of
> voltage-scaling has been checked by reducing the voltage of all
> operating points by 0.025V (for extra safety headroom) and running
> libjpeg-turbo decoding tests on 5 pcDuino2 boards. It means that
> the standard sun4i voltages should be perfectly fine too.
> 
> Signed-off-by: Siarhei Siamashka <siarhei.siamashka@gmail.com>

Applied, thanks!

Maxime
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Patch

diff --git a/arch/arm/boot/dts/sun4i-a10-pcduino.dts b/arch/arm/boot/dts/sun4i-a10-pcduino.dts
index c9b9330..55714d0 100644
--- a/arch/arm/boot/dts/sun4i-a10-pcduino.dts
+++ b/arch/arm/boot/dts/sun4i-a10-pcduino.dts
@@ -104,6 +104,10 @@ 
 	};
 };
 
+&cpu0 {
+	cpu-supply = <&reg_dcdc2>;
+};
+
 &ehci0 {
 	status = "okay";
 };
@@ -129,12 +133,8 @@ 
 	status = "okay";
 
 	axp209: pmic@34 {
-		compatible = "x-powers,axp209";
 		reg = <0x34>;
 		interrupts = <0>;
-
-		interrupt-controller;
-		#interrupt-cells = <1>;
 	};
 };
 
@@ -191,6 +191,33 @@ 
 	};
 };
 
+#include "axp209.dtsi"
+
+&reg_dcdc2 {
+	regulator-always-on;
+	regulator-min-microvolt = <1000000>;
+	regulator-max-microvolt = <1400000>;
+	regulator-name = "vdd-cpu";
+};
+
+&reg_dcdc3 {
+	regulator-always-on;
+	regulator-min-microvolt = <1000000>;
+	regulator-max-microvolt = <1400000>;
+	regulator-name = "vdd-int-dll";
+};
+
+&reg_ldo1 {
+	regulator-name = "vdd-rtc";
+};
+
+&reg_ldo2 {
+	regulator-always-on;
+	regulator-min-microvolt = <3000000>;
+	regulator-max-microvolt = <3000000>;
+	regulator-name = "avcc";
+};
+
 &uart0 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&uart0_pins_a>;