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Commit 9b87ebb1 authored by Abel Vesa's avatar Abel Vesa Committed by Shawn Guo
Browse files

arm64: dts: imx8mq: Add the buck vdd_arm regulator 



According to the schematics, this is a MP2147 switch converter
which is controlled by GPIO1_IO13. When set the gpio is set to
high the regulator output is set to 0.9V. When the gpio is set
to low the regulator output is set to 1V.

Signed-off-by: default avatarAbel Vesa <abel.vesa@nxp.com>
Signed-off-by: default avatarShawn Guo <shawnguo@kernel.org>
parent b810641a

arch/arm64/boot/dts/freescale/imx8mq-evk.dts

+35 −0
Original line number Diff line number Diff line
@@ -31,6 +31,34 @@ 
		gpio = <&gpio2 19 GPIO_ACTIVE_HIGH>;

		enable-active-high;

	};



	buck2_reg: regulator-buck2 {

		pinctrl-names = "default";

		pinctrl-0 = <&pinctrl_buck2>;

		compatible = "regulator-gpio";

		regulator-name = "vdd_arm";

		regulator-min-microvolt = <900000>;

		regulator-max-microvolt = <1000000>;

		gpios = <&gpio1 13 GPIO_ACTIVE_HIGH>;

		states = <1000000 0x0

			  900000 0x1>;

	};

};



&A53_0 {

	cpu-supply = <&buck2_reg>;

};



&A53_1 {

	cpu-supply = <&buck2_reg>;

};



&A53_2 {

	cpu-supply = <&buck2_reg>;

};



&A53_3 {

	cpu-supply = <&buck2_reg>;

};



&fec1 {
@@ -203,6 +231,13 @@ 
};



&iomuxc {

	pinctrl_buck2: vddarmgrp {

		fsl,pins = <

			MX8MQ_IOMUXC_GPIO1_IO13_GPIO1_IO13		0x19

		>;



	};



	pinctrl_fec1: fec1grp {

		fsl,pins = <

			MX8MQ_IOMUXC_ENET_MDC_ENET1_MDC			0x3