Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit a2f1a680 authored Oct 04, 2015 by Siarhei Siamashka Committed by Maxime Ripard Oct 05, 2015

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

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>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

parent 15ada16d

arch/arm/boot/dts/sun4i-a10-pcduino.dts

+31 −4

Original line number	Diff line number	Diff line
		@@ -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>;
		};
		};

		@@ -188,6 +188,33 @@
		status = "okay";
		};

		#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>;