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arm64: dts: imx8mq: Add the buck vdd_arm regulator

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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: Abel Vesa <abel.vesa@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
This commit is contained in:
Abel Vesa 2019-02-28 21:42:45 +00:00 committed by Shawn Guo
parent b810641a34
commit 9b87ebb149
1 changed files with 35 additions and 0 deletions
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35
arch/arm64/boot/dts/freescale/imx8mq-evk.dts
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@ -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