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Date:   Fri, 12 Apr 2019 14:39:28 +0000
From:   Leonard Crestez <leonard.crestez@....com>
To:     "matti.vaittinen@...rohmeurope.com" 
        <matti.vaittinen@...rohmeurope.com>,
        "angus@...ea.ca" <angus@...ea.ca>
CC:     dl-linux-imx <linux-imx@....com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "festevam@...il.com" <festevam@...il.com>,
        "mark.rutland@....com" <mark.rutland@....com>,
        "shawnguo@...nel.org" <shawnguo@...nel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        Robin Gong <yibin.gong@....com>,
        "kernel@...gutronix.de" <kernel@...gutronix.de>,
        "s.hauer@...gutronix.de" <s.hauer@...gutronix.de>
Subject: Re: [PATCH v2 1/2] arm64: dts: fsl: librem5: Add a device tree for
 the Librem5 devkit

On Fri, 2019-04-12 at 07:04 -0600, Angus Ainslie (Purism) wrote:
> +&i2c1 {
> +       clock-frequency = <400000>;
> +       pinctrl-names = "default";
> +       pinctrl-0 = <&pinctrl_i2c1>;
> +       status = "okay";
> +
> +       pmic: pmic@4b {
> +               reg = <0x4b>;
> +               compatible = "rohm,bd71837";
> +               pinctrl-names = "default";
> +               pinctrl-0 = <&pinctrl_pmic>;
> +               clocks = <&pmic_osc>;
> +               clock-names = "osc";
> +               clock-output-names = "pmic_clk";
> +               interrupt-parent = <&gpio1>;
> +               interrupts = <3 GPIO_ACTIVE_LOW>;
> +               interrupt-names = "irq";
> +               rohm,reset-snvs-powered;
> +
> +               gpo {
> +                       /* 0b0000_1100 all gpos with cmos output mode
> */
> +                       rohm,drv = <0x0C>;
> +               };

After searching for this gpo/rohm,drv property it does not seem to be
documented or handled anywhere?

Should probably just drop.

> +               regulators {
> +                       #address-cells = <1>;
> +                       #size-cells = <0>;
> +
> +                       buck1_reg: BUCK1@0 {
> +                               reg = <0>;
> +                               regulator-name = "buck1";
> +                               regulator-min-microvolt = <700000>;
> +                               regulator-max-microvolt = <1300000>;
> +                               regulator-boot-on;
> +                               regulator-always-on;
> +                               regulator-ramp-delay = <1250>;
> +                               rohm,dvs-run-voltage = <900000>;
> +                               rohm,dvs-idle-voltage = <850000>;
> +                               rohm,dvs-suspend-voltage = <800000>;
> +                       };
> +
> +                       buck2_reg: BUCK2@1 {
> +                               reg = <1>;
> +                               regulator-name = "buck2";
> +                               regulator-min-microvolt = <700000>;
> +                               regulator-max-microvolt = <1300000>;
> +                               regulator-boot-on;
> +                               regulator-always-on;
> +                               regulator-ramp-delay = <1250>;
> +                               rohm,dvs-run-voltage = <1000000>;
> +                               rohm,dvs-idle-voltage = <900000>;
> +                       };
> +
> +                       buck3_reg: BUCK3@2 {
> +                               reg = <2>;
> +                               regulator-name = "buck3";
> +                               regulator-min-microvolt = <700000>;
> +                               regulator-max-microvolt = <1300000>;
> +                               rohm,dvs-run-voltage = <1000000>;
> +                       };
> +
> +                       buck4_reg: BUCK4@3 {
> +                               reg = <3>;
> +                               regulator-name = "buck4";
> +                               regulator-min-microvolt = <700000>;
> +                               regulator-max-microvolt = <1300000>;
> +                               rohm,dvs-run-voltage = <1000000>;
> +                       };
> +
> +                       buck5_reg: BUCK5@4 {
> +                               reg = <4>;
> +                               regulator-name = "buck5";
> +                               regulator-min-microvolt = <700000>;
> +                               regulator-max-microvolt = <1350000>;
> +                               regulator-boot-on;
> +                               regulator-always-on;
> +                       };
> +
> +                       buck6_reg: BUCK6@5 {
> +                               reg = <5>;
> +                               regulator-name = "buck6";
> +                               regulator-min-microvolt = <3000000>;
> +                               regulator-max-microvolt = <3300000>;
> +                               regulator-boot-on;
> +                               regulator-always-on;
> +                       };
> +
> +                       buck7_reg: BUCK7@6 {
> +                               reg = <6>;
> +                               regulator-name = "buck7";
> +                               regulator-min-microvolt = <1605000>;
> +                               regulator-max-microvolt = <1995000>;
> +                               regulator-boot-on;
> +                               regulator-always-on;
> +                       };
> +
> +                       buck8_reg: BUCK8@7 {
> +                               reg = <7>;
> +                               regulator-name = "buck8";
> +                               regulator-min-microvolt = <800000>;
> +                               regulator-max-microvolt = <1400000>;
> +                               regulator-boot-on;
> +                               regulator-always-on;
> +                       };
> +
> +                       ldo1_reg: LDO1@8 {
> +                               reg = <8>;
> +                               regulator-name = "ldo1";
> +                               regulator-min-microvolt = <3000000>;
> +                               regulator-max-microvolt = <3300000>;
> +                               regulator-boot-on;
> +                               regulator-always-on;
> +                       };
> +
> +                       ldo2_reg: LDO2@9 {
> +                               reg = <9>;
> +                               regulator-name = "ldo2";
> +                               regulator-min-microvolt = <900000>;
> +                               regulator-max-microvolt = <900000>;
> +                               regulator-boot-on;
> +                               regulator-always-on;
> +                       };
> +
> +                       ldo3_reg: LDO3@10 {
> +                               reg = <10>;
> +                               regulator-name = "ldo3";
> +                               regulator-min-microvolt = <1800000>;
> +                               regulator-max-microvolt = <3300000>;
> +                               regulator-boot-on;
> +                               regulator-always-on;
> +                       };
> +
> +                       ldo4_reg: LDO4@11 {
> +                               reg = <11>;
> +                               regulator-name = "ldo4";
> +                               regulator-min-microvolt = <900000>;
> +                               regulator-max-microvolt = <1800000>;
> +                               regulator-boot-on;
> +                               regulator-always-on;
> +                       };
> +
> +                       ldo5_reg: LDO5@12 {
> +                               reg = <12>;
> +                               regulator-name = "ldo5";
> +                               regulator-min-microvolt = <1800000>;
> +                               regulator-max-microvolt = <3300000>;
> +                       };
> +
> +                       ldo6_reg: LDO6@13 {
> +                               reg = <13>;
> +                               regulator-name = "ldo6";
> +                               regulator-min-microvolt = <900000>;
> +                               regulator-max-microvolt = <1800000>;
> +                       };
> +
> +                       ldo7_reg: LDO7@14 {
> +                               reg = <14>;
> +                               regulator-name = "ldo7";
> +                               regulator-min-microvolt = <1800000>;
> +                               regulator-max-microvolt = <3300000>;
> +                       };
> +               };
> +       };

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