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Commit 8a880ee6 authored by Adam Sampson's avatar Adam Sampson Committed by Maxime Ripard
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ARM: dts: sun7i: Add regulator configuration for pcDuino v3 Nano 



The power configuration on this board is the same as the pcDuino v3.
This will enable frequency/voltage scaling over the standard A20
operating points from 144 MHz to 960 MHz.

Tested using cpufreq-ljt-stress-test on two pcDuino v3 Nano boards; also
tested successfully with voltages reduced by 0.025 V.

Signed-off-by: default avatarAdam Sampson <ats@offog.org>
Signed-off-by: default avatarMaxime Ripard <maxime.ripard@free-electrons.com>
parent 39140480

arch/arm/boot/dts/sun7i-a20-pcduino3-nano.dts

+31 −4
Original line number Diff line number Diff line
@@ -82,6 +82,10 @@ 
	status = "okay";

};



&cpu0 {

	cpu-supply = <&reg_dcdc2>;

};



&ehci0 {

	status = "okay";

};
@@ -108,13 +112,9 @@ 
	status = "okay";



	axp209: pmic@34 {

		compatible = "x-powers,axp209";

		reg = <0x34>;

		interrupt-parent = <&nmi_intc>;

		interrupts = <0 IRQ_TYPE_LEVEL_LOW>;



		interrupt-controller;

		#interrupt-cells = <1>;

	};

};
@@ -171,6 +171,33 @@ 
	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-pll";

};



&reg_ldo1 {

	regulator-name = "vdd-rtc";

};



&reg_ldo2 {

	regulator-always-on;

	regulator-min-microvolt = <3000000>;

	regulator-max-microvolt = <3000000>;

	regulator-name = "avcc";

};



/* A single regulator (U24) powers both USB host ports. */

&reg_usb1_vbus {

	pinctrl-0 = <&usb1_vbus_pin_pcduino3_nano>;