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Date:   Tue, 16 Apr 2019 23:20:21 +0200
From:   Marco Felsch <m.felsch@pengutronix.de>
To:     Angus Ainslie <angus@akkea.ca>
Cc:     Mark Rutland <mark.rutland@arm.com>, devicetree@vger.kernel.org,
        Shawn Guo <shawnguo@kernel.org>,
        Sascha Hauer <s.hauer@pengutronix.de>,
        linux-kernel@vger.kernel.org, Rob Herring <robh+dt@kernel.org>,
        NXP Linux Team <linux-imx@nxp.com>,
        Pengutronix Kernel Team <kernel@pengutronix.de>,
        Fabio Estevam <festevam@gmail.com>,
        linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v4 1/2] arm64: dts: fsl: librem5: Add a device tree for
 the Librem5 devkit
Message-ID: <20190416212021.3ee47m6bo2p3xkkl@pengutronix.de>
References: <20190415235343.16565-1-angus@akkea.ca>
 <20190415235343.16565-2-angus@akkea.ca>
 <20190416075435.uv3otbsxyy66gx67@pengutronix.de>
 <5c349f99d2bd543f5e56e0fffcb6682e@www.akkea.ca>
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Hi Angus,

On 19-04-16 11:02, Angus Ainslie wrote:
> Hi Marco,
> 
> On 2019-04-16 00:54, Marco Felsch wrote:
> > Hi Agnus,
> > 
> 
> Just a nitpick but could you spell my name correctly :)

Sorry it was to early that morning and I haven't had my first coffee.

> > On 19-04-15 16:53, Angus Ainslie (Purism) wrote:
> > > This is the development kit board for the Librem 5. The current
> > > level of
> > > support yields a working console and is able to boot userspace from
> > > the
> > > Network or eMMC.
> > > 
> > > Additional subsystems that are active :
> > > 
> > > - Both USB ports
> > > - SD card socket
> > > - WiFi usdhc
> > > - WWAN modem
> > > - GNSS
> > > - GPIO keys
> > > - LEDs
> > > - gyro
> > > - magnetometer
> > > - touchscreen
> > > - pwm
> > > - backlight
> > > - haptic motor
> > > 
> > > Signed-off-by: Angus Ainslie (Purism) <angus@akkea.ca>
> > > ---
> > >  arch/arm64/boot/dts/freescale/Makefile        |   1 +
> > >  .../dts/freescale/imx8mq-librem5-devkit.dts   | 822
> > > ++++++++++++++++++
> > >  2 files changed, 823 insertions(+)
> > >  create mode 100644
> > > arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts
> > > 
> > > diff --git a/arch/arm64/boot/dts/freescale/Makefile
> > > b/arch/arm64/boot/dts/freescale/Makefile
> > > index 0bd122f60549..c043aca66572 100644
> > > --- a/arch/arm64/boot/dts/freescale/Makefile
> > > +++ b/arch/arm64/boot/dts/freescale/Makefile
> > > @@ -22,6 +22,7 @@ dtb-$(CONFIG_ARCH_LAYERSCAPE) += fsl-lx2160a-rdb.dtb
> > > 
> > >  dtb-$(CONFIG_ARCH_MXC) += imx8mm-evk.dtb
> > >  dtb-$(CONFIG_ARCH_MXC) += imx8mq-evk.dtb
> > > +dtb-$(CONFIG_ARCH_MXC) += imx8mq-librem5-devkit.dtb
> > >  dtb-$(CONFIG_ARCH_MXC) += imx8mq-zii-ultra-rmb3.dtb
> > >  dtb-$(CONFIG_ARCH_MXC) += imx8mq-zii-ultra-zest.dtb
> > >  dtb-$(CONFIG_ARCH_MXC) += imx8qxp-mek.dtb
> > > diff --git a/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts
> > > b/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts
> > > new file mode 100644
> > > index 000000000000..dd705b6b94a4
> > > --- /dev/null
> > > +++ b/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts
> > > @@ -0,0 +1,822 @@
> > > +/* SPDX-License-Identifier: GPL-2.0+
> > > + *
> > > + * Copyright 2018-2019 Purism SPC
> > > + */
> > > +
> > > +/dts-v1/;
> > > +
> > > +#include "imx8mq.dtsi"
> > > +#include "dt-bindings/usb/pd.h"
> > > +#include "dt-bindings/input/input.h"
> > 
> > Just a nitpick but this should be alphabetical too.
> > 
> 
> Ok.
> 
> > > +
> > > +/ {
> > > +	model = "Purism Librem 5 devkit";
> > > +	compatible = "purism,librem5-devkit", "fsl,imx8mq";
> > > +
> > > +	backlight_dsi: backlight-dsi {
> > > +		compatible = "pwm-backlight";
> > > +		/* 200 Hz for the PAM2841 */
> > > +		pwms = <&pwm1 0 5000000>;
> > > +		brightness-levels = <0 100>;
> > > +		num-interpolated-steps = <100>;
> > > +		/* Default brightness level (index into the array defined by */
> > > +		/* the "brightness-levels" property) */
> > > +		default-brightness-level = <0>;
> > > +		power-supply = <&reg_22V4_P>;
> > > +	};
> > > +
> > > +	chosen {
> > > +		stdout-path = &uart1;
> > > +	};
> > > +
> > > +	gpio-keys {
> > > +		compatible = "gpio-keys";
> > > +		pinctrl-names = "default";
> > > +		pinctrl-0 = <&pinctrl_gpio_keys>;
> > > +
> > > +		btn1 {
> > > +			label = "VOL_UP";
> > > +			gpios = <&gpio4 21 GPIO_ACTIVE_LOW>;
> > > +			gpio-key,wakeup;
> > > +			linux,code = <KEY_VOLUMEUP>;
> > > +		};
> > > +
> > > +		btn2 {
> > > +			label = "VOL_DOWN";
> > > +			gpios = <&gpio4 22 GPIO_ACTIVE_LOW>;
> > > +			gpio-key,wakeup;
> > > +			linux,code = <KEY_VOLUMEDOWN>;
> > > +		};
> > > +
> > > +		hp_det {
> > > +			label = "HP_DET";
> > > +			gpios = <&gpio3 20 GPIO_ACTIVE_LOW>;
> > > +			gpio-key,wakeup;
> > > +			linux,code = <KEY_HP>;
> > > +		};
> > > +	};
> > > +
> > > +	leds {
> > > +		compatible = "gpio-leds";
> > > +		pinctrl-names = "default";
> > > +		pinctrl-0 = <&pinctrl_gpio_leds>;
> > > +		status = "okay";
> > 
> > You can drop the status since the default is "okay".
> > 
> 
> Ok.
> 
> > > +
> > > +		led1 {
> > > +			label = "LED 1";
> > > +			gpios = <&gpio1 13 GPIO_ACTIVE_HIGH>;
> > > +			default-state = "off";
> > > +		};
> > > +	};
> > > +
> > > +	pmic_osc: pmic-osc {
> > > +		compatible = "fixed-clock";
> > > +		#clock-cells = <0>;
> > > +		clock-frequency = <32768>;
> > > +		clock-output-names = "pmic_osc";
> > > +	};
> > > +
> > > +	pwmleds {
> > > +		compatible = "pwm-leds";
> > 
> > Can you add a blank line? It's just a nitpick.
> > 
> 
> Sure.
> 
> > > +		haptic {
> > > +			label = "librem5::haptic";
> > > +			pwms = <&pwm2 0 200000>;
> > > +			active-low;
> > > +			max-brightness = <255>;
> > > +			power-supply = <&reg_3V3_P>;
> > > +		};
> > > +	};
> > > +
> > > +	reg_1V8_P: regulator-1V8-P {
> > 
> > I don't know the policy but I would name the nodes and phandles always
> > in lower case.
> > 
> 
> Ok.
> 
> > > +		compatible = "regulator-fixed";
> > > +		regulator-name = "1V8_P";
> > > +		regulator-min-microvolt = <1800000>;
> > > +		regulator-max-microvolt = <1800000>;
> > > +		vin-supply = <&reg_vbat>;
> > > +		en-supply = <&reg_pwr_en>;
> > 
> > What is 'en-supply'? Just checked the v5.1-rc5 and didn't found that
> > property at all. This applies to the other regulator nodes too.
> > 
> 
> I was attempting to show a dependency on both supplies but I'll change the
> way it is structured.
> 
> > > +	};
> > > +
> > > +	reg_2V8_P: regulator-2V8-P {
> > > +		compatible = "regulator-fixed";
> > > +		regulator-name = "2V8_P";
> > > +		regulator-min-microvolt = <2800000>;
> > > +		regulator-max-microvolt = <2800000>;
> > > +		vin-supply = <&reg_3V3_P>;
> > > +	};
> > > +
> > > +	reg_3V3_P: regulator-3V3-P {
> > > +		compatible = "regulator-fixed";
> > > +		regulator-name = "3V3_P";
> > > +		regulator-min-microvolt = <3300000>;
> > > +		regulator-max-microvolt = <3300000>;
> > > +		vin-supply = <&reg_vbat>;
> > > +		en-supply = <&reg_pwr_en>;
> > > +	};
> > > +
> > > +	reg_5V_P: regulator-5V-P {
> > > +		/* Supplies HDMI, USB hub and smartcard */
> > > +		compatible = "regulator-fixed";
> > > +		regulator-name = "5V_P";
> > > +		regulator-min-microvolt = <5000000>;
> > > +		regulator-max-microvolt = <5000000>;
> > > +		vin-supply = <&reg_vbat>;
> > > +		en-supply = <&reg_pwr_en>;
> > > +	};
> > > +
> > > +	reg_5V_SOM: regulator-5V-SOM {
> > > +		compatible = "regulator-fixed";
> > > +		regulator-name = "5V_SOM";
> > > +		regulator-min-microvolt = <5000000>;
> > > +		regulator-max-microvolt = <5000000>;
> > > +		vin-supply = <&reg_vbat>;
> > > +		regulator-always-on;
> > > +	};
> > > +
> > > +	reg_22V4_P: regulator-22V4-P {
> > > +		compatible = "regulator-fixed";
> > > +		regulator-name = "22V4_P";
> > > +		regulator-min-microvolt = <22400000>;
> > > +		regulator-max-microvolt = <22400000>;
> > > +		vin-supply = <&reg_vbat>;
> > > +	};
> > > +
> > > +	reg_pwr_en: regulator-pwr-en {
> > > +		compatible = "regulator-fixed";
> > > +		regulator-name = "PWR_EN";
> > > +		regulator-min-microvolt = <3300000>;
> > > +		regulator-max-microvolt = <3300000>;
> > > +		gpio = <&gpio1 8 GPIO_ACTIVE_HIGH>;
> > 
> > You missed the pinctrl-0, pinctrl-names property since you already have
> > a pinctrl_pwr_en phandle.
> > 
> > > +		enable-active-high;
> > > +		regulator-always-on;
> > > +	};
> > > +
> > > +	reg_usdhc2_vmmc: regulator-usdhc2-vmmc {
> > > +		compatible = "regulator-fixed";
> > > +		regulator-name = "VSD_3V3";
> > > +		regulator-min-microvolt = <3300000>;
> > > +		regulator-max-microvolt = <3300000>;
> > > +		gpio = <&gpio2 19 GPIO_ACTIVE_HIGH>;
> > 
> > IMHO you should mux (pinctrl) a gpio where you use them but that's only
> > my opinion.
> > 
> > > +		enable-active-high;
> > > +		regulator-always-on;
> > > +	};
> > > +
> > > +	reg_vbat: regulator-vbat {
> > > +		compatible = "regulator-fixed";
> > > +		regulator-name = "VBAT_REG";
> > > +		regulator-always-on;
> > > +	};
> > 
> > A fixed regulator without a regulator-min-microvolt
> > regulator-max-microvolt?
> > 
> 
> That will get fixed with the issue above.
> 
> > > +
> > > +	wifi_pwr_en: wifi-en {
> > > +		compatible = "regulator-fixed";
> > > +		regulator-name = "WIFI_EN";
> > > +		regulator-min-microvolt = <3300000>;
> > > +		regulator-max-microvolt = <3300000>;
> > > +		gpio = <&gpio3 5 GPIO_ACTIVE_HIGH>;
> > 
> > Where do you mux that gpio? It seems that you use the
> > pinctrl_usdhc2_gpio for muxing but there is no GPIO3 mux.
> > 
> 
> I'll fix it with the regulators.
> 
> > > +		enable-active-high;
> > > +		regulator-always-on;
> > > +	};
> > > +};
> > > +
> > > +
> > > +&clk {
> > > +	assigned-clocks = <&clk IMX8MQ_AUDIO_PLL1>, <&clk
> > > IMX8MQ_AUDIO_PLL2>;
> > > +	assigned-clock-rates = <786432000>, <722534400>;
> > > +};
> > > +
> > > +&fec1 {
> > > +	pinctrl-names = "default";
> > > +	pinctrl-0 = <&pinctrl_fec1>;
> > > +	phy-mode = "rgmii-id";
> > > +	phy-handle = <&ethphy0>;
> > > +	fsl,magic-packet;
> > > +	status = "okay";
> > 
> > status should be the last property in this list.
> > 
> 
> Ok.
> 
> > > +	phy-supply = <&reg_3V3_P>;
> > > +
> > > +	mdio {
> > > +		#address-cells = <1>;
> > > +		#size-cells = <0>;
> > > +
> > > +		ethphy0: ethernet-phy@1 {
> > 
> > Is it necessary to name it ethphy0? Just a nitpick.
> > 
> > > +			compatible = "ethernet-phy-ieee802.3-c22";
> > > +			reg = <1>;
> > > +		};
> > > +	};
> > > +};
> > > +
> > > +&i2c1 {
> > > +	clock-frequency = <400000>;
> > > +	pinctrl-names = "default";
> > > +	pinctrl-0 = <&pinctrl_i2c1>;
> > > +	status = "okay";
> > > +
> > > +	pmic: pmic@4b {
> > > +		reg = <0x4b>;
> > > +		compatible = "rohm,bd71837";
> > 
> > Please swap the reg and compatible property.
> > 
> > > +		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;
> > > +
> > > +		regulators {
> > > +			#address-cells = <1>;
> > > +			#size-cells = <0>;
> > 
> > Please drop the #address-cells, #size-cells and the @<reg> suffix
> > including the reg = <> property. So it would look like:
> > 
> > 			buck1_reg: BUCK1 {
> > 				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>;
> > 			};
> > 
> > Please look at
> > Documentation/devicetree/bindings/regulator/rohm,bd71837-regulator.txt.
> > 
> 
> Thanks hadn't noticed the documentation change.
> 
> > > +
> > > +			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>;
> > > +			};
> > > +		};
> > > +	};
> > > +
> > > +	typec_ptn5100: usb_typec@52 {
> > > +		compatible = "nxp,ptn5110";
> > > +		pinctrl-names = "default";
> > > +		pinctrl-0 = <&pinctrl_typec>;
> > > +		reg = <0x52>;
> > 
> > The reg = <> should be followed after the compatible.
> > 
> > > +		interrupt-parent = <&gpio3>;
> > > +		interrupts = <1 IRQ_TYPE_LEVEL_LOW>;
> > > +		vconn-supply = <&reg_5V_P>;
> > 
> > The vconn-supply isn't documented elsewhere.
> > 
> 
> Yeah that came from the schematic not the code or documentation.

I wouldn't add properties which aren't supported.

> > > +		usb_con: connector {
> > 
> > Is that phandle nedded?
> > 
> > > +			compatible = "usb-c-connector";
> > > +			label = "USB-C";
> > > +			data-role = "dual";
> > > +			power-role = "dual";
> > > +			try-power-role = "sink";
> > > +			source-pdos = <PDO_FIXED(5000, 2000, PDO_FIXED_USB_COMM |
> > > PDO_FIXED_DUAL_ROLE | PDO_FIXED_DATA_SWAP )>;
> > > +			sink-pdos = <PDO_FIXED(5000, 2000, PDO_FIXED_USB_COMM |
> > > PDO_FIXED_DUAL_ROLE | PDO_FIXED_DATA_SWAP )
> > > +			     PDO_VAR(5000, 12000, 2000)>;
> > 
> > Just a nitpick but I would break the lines, e.g.
> > 
> > 			source-pdos = <PDO_FIXED(5000, 2000, PDO_FIXED_USB_COMM |
> > 							     PDO_FIXED_DUAL_ROLE |
> > 							     PDO_FIXED_DATA_SWAP )>;
> > 			sink-pdos = <PDO_FIXED(5000, 2000, PDO_FIXED_USB_COMM |
> > 							   PDO_FIXED_DUAL_ROLE |
> > 							   PDO_FIXED_DATA_SWAP )
> > 			     	     PDO_VAR(5000, 12000, 2000)>;
> > 
> > 
> 
> Ok they are longer than 80 cols anyway

That's true it was just a idea. You can break the lines where you want :)

> 
> > > +			op-sink-microwatt = <10000000>;
> > > +			ports {
> > > +				#address-cells = <1>;
> > > +				#size-cells = <0>;
> > 
> > Blank line please.
> > 
> > > +				port@0 {
> > > +					reg = <0>;
> > > +					usb_con_hs: endpoint {
> > > +						remote-endpoint = <&typec_hs>;
> > > +					};
> > > +				};
> > 
> > Here too.
> > 
> > > +				port@1 {
> > > +					reg = <1>;
> > > +					usb_con_ss: endpoint {
> > > +						remote-endpoint = <&typec_ss>;
> > > +					};
> > > +				};
> > > +			};
> > > +		};
> > > +
> > > +	};
> > > +
> > > +	rtc@68 {
> > > +		pinctrl-names = "default";
> > > +		compatible = "microcrystal,rv4162";
> > > +		reg = <0x68>;
> > > +		pinctrl-0 = <&pinctrl_rtc>;
> > > +		interrupt-parent = <&gpio4>;
> > > +		interrupts = <29 IRQ_TYPE_LEVEL_LOW>;
> > > +	};
> > > +
> > > +	charger: charger@6b { /* bq25896 */
> > 
> > Is that phandle necessary?
> > 
> > > +		compatible = "ti,bq25890";
> > > +		reg = <0x6b>;
> > > +		pinctrl-names = "default";
> > > +		pinctrl-0 = <&pinctrl_charger>;
> > > +		interrupt-parent = <&gpio3>;
> > > +		interrupts = <25 IRQ_TYPE_EDGE_FALLING>;
> > > +		ti,battery-regulation-voltage = <4192000>; /* 4.192V */
> > > +		ti,charge-current = <1600000>; /* 1.6 A */
> > > +		ti,termination-current = <66000>;  /* 66mA */
> > > +		ti,precharge-current = <1300000>; /* 1.3A */
> > > +		ti,minimum-sys-voltage = <2750000>; /* 2.75V */
> > > +		ti,boost-voltage = <5000000>; /* 5V */
> > > +		ti,boost-max-current = <50000>; /* 50mA */
> > 
> > IMHO I would comment only the measurments.
> > 
> 
> Sorry do you mean the units ?

Yes and sorry my english wasn't the best this morning.

> 
> I liked the additional clarity of not having to count zero's.

Like you prefer. I knew cases where the comments and the values didn't
matched anymore. Then it gets harder to decide which value is correct.

> > > +	};
> > > +};
> > > +
> > > +&i2c3 {
> > > +	clock-frequency = <100000>;
> > > +	pinctrl-names = "default";
> > > +	pinctrl-0 = <&pinctrl_i2c3>, <&pinctrl_imu>;
> > 
> > Why do you don't mux the pinctrl_imu within the magnetometer@1e node?
> > 
> > > +	status = "okay";
> > > +
> > > +	lsm9d_magn: magnetometer@1e	{
> > 
> > Is that phandle necessary?
> > 
> > > +		compatible = "st,lsm9ds1-magn";
> > > +		reg = <0x1e>;
> > > +		interrupt-parent = <&gpio3>;
> > > +		interrupts = <19 IRQ_TYPE_LEVEL_LOW>;
> > > +		vdd-supply = <&reg_3V3_P>;
> > > +		vddio-supply = <&reg_3V3_P>;
> > > +	};
> > > +
> > > +	goodix_ts: touchscreen@5d {
> > 
> > This here too.
> > 
> > > +		compatible = "goodix,gt5688";
> > > +		pinctrl-names = "default";
> > > +		pinctrl-0 = <&pinctrl_goodix_ts>;
> > > +		reg = <0x5d>;
> > 
> > The reg = <> should be followed the compatible string.
> > 
> > > +		interrupt-parent = <&gpio3>;
> > > +		interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
> > > +		reset-gpios = <&gpio1 5 GPIO_ACTIVE_HIGH>;
> > > +		irq-gpios = <&gpio3 0 GPIO_ACTIVE_HIGH>;
> > > +		touchscreen-size-x = <720>;
> > > +		touchscreen-size-y = <1440>;
> > > +		AVDD28-supply = <&reg_2V8_P>;
> > > +		VDDIO-supply = <&reg_1V8_P>;
> > 
> > Didn't found any of these supplies. Can you drop them?
> > 
> 
> AVDD28 line 539 in drivers/input/touchscreen/goodix.c
> 
> VDDIO line 548 in drivers/input/touchscreen/goodix.c

Nope,
https://elixir.bootlin.com/linux/v5.1-rc5/source/drivers/input/touchscreen/goodix.c#L539

Did you have any patches applied or are there some ongoing patches?

> 
> > > +	};
> > > +};
> > > +
> > > +&iomuxc {
> > 
> > It seems a bit inconsistent to add a comment behind the
> > mux or above. I would add comments just above.
> > 
> 
> My preference was for commenting after but that made some lines longer than
> 80 cols so I reduced the offending lines.
> 
> > > +	pinctrl_bt: btgrp {
> > > +		fsl,pins = <
> > > +		/* nBT_DISABLE */
> > > +		MX8MQ_IOMUXC_NAND_DATA05_GPIO3_IO11             0x16
> > 
> > As you do it here.
> > 
> > > +		/* BT_HOST_WAKE */
> > > +		MX8MQ_IOMUXC_NAND_DATA01_GPIO3_IO7              0x10
> > > +		>;
> > > +	};
> > > +
> > > +	pinctrl_charger: chargernirq {
> > > +		fsl,pins = <
> > > +		/* CHRG_nINT */
> > > +		MX8MQ_IOMUXC_SAI5_MCLK_GPIO3_IO25	0x80
> > > +		>;
> > > +	};
> > > +
> > > +	pinctrl_fec1: fec1grp {
> > > +		fsl,pins = <
> > > +		MX8MQ_IOMUXC_ENET_MDC_ENET1_MDC		0x3
> > > +		MX8MQ_IOMUXC_ENET_MDIO_ENET1_MDIO	0x3
> > > +		MX8MQ_IOMUXC_ENET_TD3_ENET1_RGMII_TD3	0x1f
> > > +		MX8MQ_IOMUXC_ENET_TD2_ENET1_RGMII_TD2	0x1f
> > > +		MX8MQ_IOMUXC_ENET_TD1_ENET1_RGMII_TD1	0x1f
> > > +		MX8MQ_IOMUXC_ENET_TD0_ENET1_RGMII_TD0	0x1f
> > > +		MX8MQ_IOMUXC_ENET_RD3_ENET1_RGMII_RD3	0x91
> > > +		MX8MQ_IOMUXC_ENET_RD2_ENET1_RGMII_RD2	0x91
> > > +		MX8MQ_IOMUXC_ENET_RD1_ENET1_RGMII_RD1	0x91
> > > +		MX8MQ_IOMUXC_ENET_RD0_ENET1_RGMII_RD0	0x91
> > > +		MX8MQ_IOMUXC_ENET_TXC_ENET1_RGMII_TXC	0x1f
> > > +		MX8MQ_IOMUXC_ENET_RXC_ENET1_RGMII_RXC	0x91
> > > +		MX8MQ_IOMUXC_ENET_RX_CTL_ENET1_RGMII_RX_CTL	0x91
> > > +		MX8MQ_IOMUXC_ENET_TX_CTL_ENET1_RGMII_TX_CTL	0x1f
> > > +		MX8MQ_IOMUXC_GPIO1_IO09_GPIO1_IO9	0x19
> > > +		MX8MQ_IOMUXC_GPIO1_IO15_CCMSRCGPCMIX_CLKO2      0x1f
> > > +		>;
> > > +	};
> > > +
> > > +	pinctrl_goodix_ts: gt5688 {
> > > +		fsl,pins = <
> > > +		/* TOUCH INT */
> > > +		MX8MQ_IOMUXC_NAND_ALE_GPIO3_IO0         0x16
> > > +		/* TOUCH RST */
> > > +		MX8MQ_IOMUXC_GPIO1_IO05_GPIO1_IO5	0x19
> > > +		>;
> > > +	};
> > > +
> > > +	pinctrl_gpio_leds: gpioleds {
> > > +		fsl,pins = <
> > > +		MX8MQ_IOMUXC_GPIO1_IO13_GPIO1_IO13	0x16
> > > +		>;
> > > +	};
> > > +
> > > +	pinctrl_gpio_keys: gpiokeys {
> > > +		fsl,pins = <
> > > +		MX8MQ_IOMUXC_SAI2_RXFS_GPIO4_IO21	0x16
> > > +		MX8MQ_IOMUXC_SAI2_RXC_GPIO4_IO22	0x16
> > > +		/* HP_DET */
> > > +		MX8MQ_IOMUXC_SAI5_RXC_GPIO3_IO20	0x180
> > > +		>;
> > > +	};
> > > +
> > > +	pinctrl_haptic: hapticgrp {
> > > +		fsl,pins = <
> > > +		MX8MQ_IOMUXC_SPDIF_RX_PWM2_OUT		0xc6  /* nHAPTIC */
> > > +		>;
> > > +	};
> > > +
> > > +	pinctrl_i2c1: i2c1grp {
> > > +		fsl,pins = <
> > > +		MX8MQ_IOMUXC_I2C1_SCL_I2C1_SCL		0x4000001f
> > > +		MX8MQ_IOMUXC_I2C1_SDA_I2C1_SDA		0x4000001f
> > > +		>;
> > > +	};
> > > +
> > > +	pinctrl_i2c3: i2c3grp {
> > > +		fsl,pins = <
> > > +		MX8MQ_IOMUXC_I2C3_SCL_I2C3_SCL		0x4000001f
> > > +		MX8MQ_IOMUXC_I2C3_SDA_I2C3_SDA		0x4000001f
> > > +		>;
> > > +	};
> > > +
> > > +	pinctrl_imu: imugrp {
> > > +		fsl,pins = <
> > > +		/* IMU_INT */
> > > +		MX8MQ_IOMUXC_SAI5_RXFS_GPIO3_IO19	0x8
> > > +		>;
> > > +	};
> > > +
> > > +	pinctrl_pmic: pmicint {
> > > +		fsl,pins = <
> > > +		MX8MQ_IOMUXC_GPIO1_IO03_GPIO1_IO3	0x80
> > > +		>;
> > > +	};
> > > +
> > > +	pinctrl_pwr_en: pwrengrp {
> > > +		fsl,pins = <
> > > +		MX8MQ_IOMUXC_GPIO1_IO08_GPIO1_IO8               0x06
> > > +		>;
> > > +	};
> > > +
> > > +	pinctrl_pwm1: pwm1 {
> > > +		fsl,pins = <
> > > +		MX8MQ_IOMUXC_GPIO1_IO01_PWM1_OUT	0x6  /* DSI_BL_PWM */
> > > +		>;
> > > +	};
> > > +
> > > +	pinctrl_rtc: rtcirq {
> > > +		fsl,pins = <
> > > +		MX8MQ_IOMUXC_SAI3_RXC_GPIO4_IO29	0x80
> > > +		>;
> > > +	};
> > > +
> > > +	pinctrl_typec: typecgrp {
> > > +		fsl,pins = <
> > > +		MX8MQ_IOMUXC_NAND_DATA06_GPIO3_IO12	0x16
> > > +		MX8MQ_IOMUXC_NAND_CE0_B_GPIO3_IO1	0x80
> > > +		>;
> > > +	};
> > > +
> > > +	pinctrl_uart1: uart1grp {
> > > +		fsl,pins = <
> > > +		MX8MQ_IOMUXC_UART1_RXD_UART1_DCE_RX		0x49
> > > +		MX8MQ_IOMUXC_UART1_TXD_UART1_DCE_TX		0x49
> > > +		>;
> > > +	};
> > > +
> > > +	pinctrl_uart2: uart2grp {
> > > +		fsl,pins = <
> > > +		MX8MQ_IOMUXC_UART2_TXD_UART2_DCE_TX		0x49
> > > +		MX8MQ_IOMUXC_UART2_RXD_UART2_DCE_RX		0x49
> > > +		MX8MQ_IOMUXC_UART4_RXD_UART2_DCE_CTS_B		0x49
> > > +		MX8MQ_IOMUXC_UART4_TXD_UART2_DCE_RTS_B		0x49
> > > +		>;
> > > +	};
> > > +
> > > +	pinctrl_uart3: uart3grp {
> > > +		fsl,pins = <
> > > +		MX8MQ_IOMUXC_UART3_RXD_UART3_DCE_RX		0x49
> > > +		MX8MQ_IOMUXC_UART3_TXD_UART3_DCE_TX		0x49
> > > +		>;
> > > +	};
> > > +
> > > +	pinctrl_uart4: uart4grp {
> > > +		fsl,pins = <
> > > +		MX8MQ_IOMUXC_ECSPI2_SCLK_UART4_DCE_RX		0x49
> > > +		MX8MQ_IOMUXC_ECSPI2_MOSI_UART4_DCE_TX		0x49
> > > +		MX8MQ_IOMUXC_ECSPI2_MISO_UART4_DCE_CTS_B	0x49
> > > +		MX8MQ_IOMUXC_ECSPI2_SS0_UART4_DCE_RTS_B		0x49
> > > +		MX8MQ_IOMUXC_GPIO1_IO00_ANAMIX_REF_CLK_32K	0x49
> > > +		>;
> > > +	};
> > > +
> > > +	pinctrl_usdhc1: usdhc1grp {
> > > +		fsl,pins = <
> > > +		MX8MQ_IOMUXC_SD1_CLK_USDHC1_CLK			0x83
> > > +		MX8MQ_IOMUXC_SD1_CMD_USDHC1_CMD			0xc3
> > > +		MX8MQ_IOMUXC_SD1_DATA0_USDHC1_DATA0		0xc3
> > > +		MX8MQ_IOMUXC_SD1_DATA1_USDHC1_DATA1		0xc3
> > > +		MX8MQ_IOMUXC_SD1_DATA2_USDHC1_DATA2		0xc3
> > > +		MX8MQ_IOMUXC_SD1_DATA3_USDHC1_DATA3		0xc3
> > > +		MX8MQ_IOMUXC_SD1_DATA4_USDHC1_DATA4		0xc3
> > > +		MX8MQ_IOMUXC_SD1_DATA5_USDHC1_DATA5		0xc3
> > > +		MX8MQ_IOMUXC_SD1_DATA6_USDHC1_DATA6		0xc3
> > > +		MX8MQ_IOMUXC_SD1_DATA7_USDHC1_DATA7		0xc3
> > > +		MX8MQ_IOMUXC_SD1_STROBE_USDHC1_STROBE		0x83
> > > +		MX8MQ_IOMUXC_SD1_RESET_B_USDHC1_RESET_B		0xc1
> > > +		>;
> > > +	};
> > > +
> > > +	pinctrl_usdhc1_100mhz: usdhc1grp100mhz {
> > > +		fsl,pins = <
> > > +		MX8MQ_IOMUXC_SD1_CLK_USDHC1_CLK			0x8d
> > > +		MX8MQ_IOMUXC_SD1_CMD_USDHC1_CMD			0xcd
> > > +		MX8MQ_IOMUXC_SD1_DATA0_USDHC1_DATA0		0xcd
> > > +		MX8MQ_IOMUXC_SD1_DATA1_USDHC1_DATA1		0xcd
> > > +		MX8MQ_IOMUXC_SD1_DATA2_USDHC1_DATA2		0xcd
> > > +		MX8MQ_IOMUXC_SD1_DATA3_USDHC1_DATA3		0xcd
> > > +		MX8MQ_IOMUXC_SD1_DATA4_USDHC1_DATA4		0xcd
> > > +		MX8MQ_IOMUXC_SD1_DATA5_USDHC1_DATA5		0xcd
> > > +		MX8MQ_IOMUXC_SD1_DATA6_USDHC1_DATA6		0xcd
> > > +		MX8MQ_IOMUXC_SD1_DATA7_USDHC1_DATA7		0xcd
> > > +		MX8MQ_IOMUXC_SD1_STROBE_USDHC1_STROBE		0x8d
> > > +		MX8MQ_IOMUXC_SD1_RESET_B_USDHC1_RESET_B		0xc1
> > > +		>;
> > > +	};
> > > +
> > > +	pinctrl_usdhc1_200mhz: usdhc1grp200mhz {
> > > +		fsl,pins = <
> > > +		MX8MQ_IOMUXC_SD1_CLK_USDHC1_CLK			0x9f
> > > +		MX8MQ_IOMUXC_SD1_CMD_USDHC1_CMD			0xdf
> > > +		MX8MQ_IOMUXC_SD1_DATA0_USDHC1_DATA0		0xdf
> > > +		MX8MQ_IOMUXC_SD1_DATA1_USDHC1_DATA1		0xdf
> > > +		MX8MQ_IOMUXC_SD1_DATA2_USDHC1_DATA2		0xdf
> > > +		MX8MQ_IOMUXC_SD1_DATA3_USDHC1_DATA3		0xdf
> > > +		MX8MQ_IOMUXC_SD1_DATA4_USDHC1_DATA4		0xdf
> > > +		MX8MQ_IOMUXC_SD1_DATA5_USDHC1_DATA5		0xdf
> > > +		MX8MQ_IOMUXC_SD1_DATA6_USDHC1_DATA6		0xdf
> > > +		MX8MQ_IOMUXC_SD1_DATA7_USDHC1_DATA7		0xdf
> > > +		MX8MQ_IOMUXC_SD1_STROBE_USDHC1_STROBE		0x9f
> > > +		MX8MQ_IOMUXC_SD1_RESET_B_USDHC1_RESET_B		0xc1
> > > +		>;
> > > +	};
> > > +
> > > +	pinctrl_usdhc2_gpio: usdhc2grpgpio {
> > > +		fsl,pins = <
> > > +		MX8MQ_IOMUXC_SD2_RESET_B_GPIO2_IO19		0x41
> > > +		/* WIFI_WAKE */
> > > +		MX8MQ_IOMUXC_SD2_WP_GPIO2_IO20			0x80
> > > +		>;
> > > +	};
> > > +
> > > +	pinctrl_usdhc2: usdhc2grp {
> > > +		fsl,pins = <
> > > +		MX8MQ_IOMUXC_SD2_CLK_USDHC2_CLK			0x83
> > > +		MX8MQ_IOMUXC_SD2_CMD_USDHC2_CMD			0xc3
> > > +		MX8MQ_IOMUXC_SD2_DATA0_USDHC2_DATA0		0xc3
> > > +		MX8MQ_IOMUXC_SD2_DATA1_USDHC2_DATA1		0xc3
> > > +		MX8MQ_IOMUXC_SD2_DATA2_USDHC2_DATA2		0xc3
> > > +		MX8MQ_IOMUXC_SD2_DATA3_USDHC2_DATA3		0xc3
> > > +		>;
> > > +	};
> > > +
> > > +	pinctrl_usdhc2_100mhz: usdhc2grp100mhz {
> > > +		fsl,pins = <
> > > +		MX8MQ_IOMUXC_SD2_CLK_USDHC2_CLK			0x8d
> > > +		MX8MQ_IOMUXC_SD2_CMD_USDHC2_CMD			0xcd
> > > +		MX8MQ_IOMUXC_SD2_DATA0_USDHC2_DATA0		0xcd
> > > +		MX8MQ_IOMUXC_SD2_DATA1_USDHC2_DATA1		0xcd
> > > +		MX8MQ_IOMUXC_SD2_DATA2_USDHC2_DATA2		0xcd
> > > +		MX8MQ_IOMUXC_SD2_DATA3_USDHC2_DATA3		0xcd
> > > +		>;
> > > +	};
> > > +
> > > +	pinctrl_usdhc2_200mhz: usdhc2grp200mhz {
> > > +		fsl,pins = <
> > > +		MX8MQ_IOMUXC_SD2_CLK_USDHC2_CLK			0x9f
> > > +		MX8MQ_IOMUXC_SD2_CMD_USDHC2_CMD			0xcf
> > > +		MX8MQ_IOMUXC_SD2_DATA0_USDHC2_DATA0		0xcf
> > > +		MX8MQ_IOMUXC_SD2_DATA1_USDHC2_DATA1		0xcf
> > > +		MX8MQ_IOMUXC_SD2_DATA2_USDHC2_DATA2		0xcf
> > > +		MX8MQ_IOMUXC_SD2_DATA3_USDHC2_DATA3		0xcf
> > > +		>;
> > > +	};
> > > +
> > > +	pinctrl_wdog: wdoggrp {
> > > +		fsl,pins = <
> > > +		MX8MQ_IOMUXC_GPIO1_IO02_WDOG1_WDOG_B	0xc6
> > > +		>;
> > > +	};
> > > +
> > > +	pinctrl_wwan: wwangrp {
> > > +		fsl,pins = <
> > > +		/* nWWAN_DISABLE */
> > > +		MX8MQ_IOMUXC_NAND_CE3_B_GPIO3_IO4	0x09
> > > +		/* nWoWWAN */
> > > +		MX8MQ_IOMUXC_NAND_DATA02_GPIO3_IO8	0x80
> > > +		/* WWAN_RESET */
> > > +		MX8MQ_IOMUXC_NAND_DATA03_GPIO3_IO9	0x19
> > > +		>;
> > > +	};
> > > +
> > > +};
> > > +
> > > +&pwm1 {
> > > +	pinctrl-names = "default";
> > > +	pinctrl-0 = <&pinctrl_pwm1>;
> > > +	status = "okay";
> > > +};
> > > +
> > > +&pwm2 {
> > > +	pinctrl-names = "default";
> > > +	pinctrl-0 = <&pinctrl_haptic>;
> > 
> > Just a nitpick but I would name it pinctrl_pwm2 as you did it for pwm1.
> > 
> 
> I figured haptic was more descriptive.

Descriptive for the pwm node? If that is the case the pwm1 node should be
called backlight. Anyway as I said it's just a nitpick.

> 
> > > +	status = "okay";
> > > +};
> > > +
> > > +&uart1 { /* console */
> > > +	pinctrl-names = "default";
> > > +	pinctrl-0 = <&pinctrl_uart1>;
> > > +	status = "okay";
> > > +};
> > > +
> > > +&uart3 { /* GNSS */
> > > +	pinctrl-names = "default";
> > > +	pinctrl-0 = <&pinctrl_uart3>;
> > > +	status = "okay";
> > > +};
> > > +
> > > +&uart4 { /* BT */
> > > +	pinctrl-names = "default";
> > > +	pinctrl-0 = <&pinctrl_uart4>, <&pinctrl_bt>;
> > > +	uart-has-rtscts;
> > > +	status = "okay";
> > > +};
> > > +
> > > +&usb3_phy0 {
> > > +	status = "okay";
> > 
> > Should be the last property.
> > 
> > > +	#address-cells = <1>;
> > > +	#size-cells = <0>;
> > 
> > Blank line.
> > > +	port@0 {
> > > +		reg = <0>;
> > 
> > and here
> > > +		typec_hs: endpoint {
> > > +			remote-endpoint = <&usb_con_hs>;
> > > +		};
> > > +	};
> > 
> > here
> > 
> > > +	port@1 {
> > > +		reg = <1>;
> > 
> > and here.
> > 
> > > +		typec_ss: endpoint {
> > > +			remote-endpoint = <&usb_con_ss>;
> > > +		};
> > > +	};
> > > +};
> > > +
> > > +&usb3_phy1 {
> > > +	status = "okay";
> > > +	#address-cells = <1>;
> > > +	#size-cells = <0>;
> > 
> > Why did you assign the #address-cells and #size-cells without specify
> > any port? Status should be the last property.
> > 
> 
> Cut and paste from phy0.
> 
> > > +};
> > > +
> > > +&usb_dwc3_0 {
> > > +	status = "okay";
> > 
> > Here also.
> > 
> > > +	extcon = <&typec_ptn5100>;
> > > +	dr_mode = "otg";
> > > +};
> > > +
> > > +&usb_dwc3_1 {
> > > +	status = "okay";
> > 
> > And here.
> > 
> > > +	dr_mode = "host";
> > > +};
> > > +
> > > +&usdhc1 {
> > > +	pinctrl-names = "default", "state_100mhz", "state_200mhz";
> > > +	pinctrl-0 = <&pinctrl_usdhc1>;
> > > +	pinctrl-1 = <&pinctrl_usdhc1_100mhz>;
> > > +	pinctrl-2 = <&pinctrl_usdhc1_200mhz>;
> > > +	bus-width = <8>;
> > > +	non-removable;
> > > +	status = "okay";
> > > +};
> > > +
> > > +&usdhc2 {
> > > +	pinctrl-names = "default", "state_100mhz", "state_200mhz";
> > > +	pinctrl-0 = <&pinctrl_usdhc2>, <&pinctrl_usdhc2_gpio>;
> > 
> > You can drop the pinctrl_usdhc2_gpio handle if you mux them within the
> > regulator node.
> 
> Ok
> 
> > 
> > > +	pinctrl-1 = <&pinctrl_usdhc2_100mhz>, <&pinctrl_usdhc2_gpio>;
> > > +	pinctrl-2 = <&pinctrl_usdhc2_200mhz>, <&pinctrl_usdhc2_gpio>;
> > > +	bus-width = <4>;
> > > +	vmmc-supply = <&reg_usdhc2_vmmc>;
> > > +	power-supply = <&wifi_pwr_en>;
> > > +
> > > +	non-removable;
> > > +	disable-wp;
> > > +	cap-sdio-irq;
> > > +	keep-power-in-suspend;
> > > +	wakeup-source;
> > > +	status = "okay";
> > > +};
> > > +
> > > +&wdog1 {
> > > +	pinctrl-names = "default";
> > > +	pinctrl-0 = <&pinctrl_wdog>;
> > > +	fsl,ext-reset-output;
> > > +	status = "okay";
> > > +};
> > > --
> > > 2.17.1
> > > 
> > 
> > So now I finished, sorry for don't cover that in your v3.
> > 
> > Regards,
> >   Marco
> 
> Thanks
> Angus

Regards,
  Marco

> 
> 

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