On 19-02-28 22:15:46, Shawn Guo wrote:
> On Fri, Feb 15, 2019 at 06:07:23PM +0000, Abel Vesa wrote:
> > 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 <[email protected]>
> > ---
> > arch/arm64/boot/dts/freescale/imx8mq-evk.dts | 36
> > ++++++++++++++++++++++++++++
> > 1 file changed, 36 insertions(+)
> >
> > diff --git a/arch/arm64/boot/dts/freescale/imx8mq-evk.dts
> > b/arch/arm64/boot/dts/freescale/imx8mq-evk.dts
> > index 54737bf..e5da3dd 100644
> > --- a/arch/arm64/boot/dts/freescale/imx8mq-evk.dts
> > +++ b/arch/arm64/boot/dts/freescale/imx8mq-evk.dts
> > @@ -31,6 +31,35 @@
> > gpio = <&gpio2 19 GPIO_ACTIVE_HIGH>;
> > enable-active-high;
> > };
> > +
> > + buck2_reg: buck2 {
>
> Please follow regulator-xxx naming convention.
>
Will do.
> > + 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>;
> > + enable-active-high;
>
> The property only makes sense when enable-gpio is present?
>
Will remove it.
> Shawn
>
> > + };
> > +};
> > +
> > +&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 +232,13 @@
> > };
> >
> > &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
> > --
> > 2.7.4
> >
> >
> > _______________________________________________
> > linux-arm-kernel mailing list
> > [email protected]
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