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From: Jernej =?utf-8?B?xaBrcmFiZWM=?= <jernej.skrabec@gmail.com>
To: Rob Herring <robh+dt@kernel.org>,
 Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
 Conor Dooley <conor+dt@kernel.org>, Chen-Yu Tsai <wens@csie.org>,
 Samuel Holland <samuel@sholland.org>, Maxime Ripard <mripard@kernel.org>,
 devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
 linux-sunxi@lists.linux.dev, linux-kernel@vger.kernel.org,
 Denis Burkov <hitechshell@mail.ru>
Cc: Denis Burkov <hitechshell@mail.ru>
Subject: Re: [PATCH 2/2] ARM: dts: sun5i: Add PocketBook 614 Plus support
Date: Thu, 14 Mar 2024 18:14:48 +0100
Message-ID: <2451572.jE0xQCEvom@jernej-laptop>
In-Reply-To: <20240314155306.11521-2-hitechshell@mail.ru>
References:
 <20240314155306.11521-1-hitechshell@mail.ru>
 <20240314155306.11521-2-hitechshell@mail.ru>
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Hi Denis!

Dne =C4=8Detrtek, 14. marec 2024 ob 16:53:06 CET je Denis Burkov napisal(a):
> What works:
>=20
> - Serial console
> - mmc0, mmc2 (both microSD card slots on the board)
> - All buttons (gpio and lradc based)
> - Power LED
> - PMIC
> - RTC
> - USB OTG/gadgets mode
>=20
> Signed-off-by: Denis Burkov <hitechshell@mail.ru>
> ---
>  arch/arm/boot/dts/allwinner/Makefile          |   2 +
>  .../sun5i-a13-pocketbook-614-plus.dts         | 254 ++++++++++++++++++
>  2 files changed, 256 insertions(+)
>  create mode 100644 arch/arm/boot/dts/allwinner/sun5i-a13-pocketbook-614-=
plus.dts
>=20
> diff --git a/arch/arm/boot/dts/allwinner/Makefile b/arch/arm/boot/dts/all=
winner/Makefile
> index 2d26c3397f14..fe321865beed 100644
> --- a/arch/arm/boot/dts/allwinner/Makefile
> +++ b/arch/arm/boot/dts/allwinner/Makefile
> @@ -61,6 +61,7 @@ dtb-$(CONFIG_MACH_SUN5I) +=3D \
>  	sun5i-a13-olinuxino.dtb \
>  	sun5i-a13-olinuxino-micro.dtb \
>  	sun5i-a13-pocketbook-touch-lux-3.dtb \
> +	sun5i-a13-pocketbook-614-plus.dtb \
>  	sun5i-a13-q8-tablet.dtb \
>  	sun5i-a13-utoo-p66.dtb \
>  	sun5i-gr8-chip-pro.dtb \
> @@ -82,6 +83,7 @@ dtb-$(CONFIG_MACH_SUN5I) +=3D \
>  	sun5i-a13-olinuxino.dtb \
>  	sun5i-a13-olinuxino-micro.dtb \
>  	sun5i-a13-pocketbook-touch-lux-3.dtb \
> +	sun5i-a13-pocketbook-614-plus.dtb \
>  	sun5i-a13-q8-tablet.dtb \
>  	sun5i-a13-utoo-p66.dtb \
>  	sun5i-gr8-chip-pro.dtb \

This merge artefact. Can you add patch before this one and remove duplicate=
 definitions?

> diff --git a/arch/arm/boot/dts/allwinner/sun5i-a13-pocketbook-614-plus.dt=
s b/arch/arm/boot/dts/allwinner/sun5i-a13-pocketbook-614-plus.dts
> new file mode 100644
> index 000000000000..89898fa16ff7
> --- /dev/null
> +++ b/arch/arm/boot/dts/allwinner/sun5i-a13-pocketbook-614-plus.dts
> @@ -0,0 +1,254 @@
> +// SPDX-License-Identifier: GPL-2.0+
> +/*
> + * Copyright 2024 Denis Burkov <hitechshell@mail.ru>
> + */
> +
> +/dts-v1/;
> +#include "sun5i-a13.dtsi"
> +#include "sunxi-common-regulators.dtsi"

Extra empty line here.

> +#include <dt-bindings/gpio/gpio.h>
> +#include <dt-bindings/input/input.h>
> +#include <dt-bindings/interrupt-controller/irq.h>
> +
> +/ {
> +	model =3D "PocketBook 614 Plus";
> +	compatible =3D "pocketbook,614-plus", "allwinner,sun5i-a13";
> +
> +	aliases {
> +		serial0 =3D &uart1;
> +		i2c0 =3D &i2c0;
> +		i2c1 =3D &i2c1;
> +		i2c2 =3D &i2c2;
> +		rtc0 =3D &pcf8563;

Please drop aliases except serial0.

> +	};
> +
> +	chosen {
> +		stdout-path =3D "serial0:115200n8";
> +	};
> +
> +	leds {
> +		compatible =3D "gpio-leds";
> +		pinctrl-names =3D "default";
> +		pinctrl-0 =3D <&led_pins_pocketbook>;

Drop pinctrl nodes. GPIOs don't need them.

> +
> +		led {
> +			gpios =3D <&pio 4 8 GPIO_ACTIVE_LOW>; /* PE8 */
> +			default-state =3D "on";

Add additional properties, like function and color.

> +		};
> +	};
> +
> +	gpio-keys {
> +		compatible =3D "gpio-keys";
> +		autorepeat;

Why is autorepeat needed?

> +		label =3D "GPIO Keys";

I guess label is self evident and not needed?

> +		pinctrl-names =3D "default";
> +		pinctrl-0 =3D <&pocketbook_btn_pins>;

Again, GPIOs don't need pinctrl nodes. I know that you specified pull up, b=
ut
please try without. Other boards have same design and it's not needed.

> +
> +		key-right {
> +			label =3D "Right";
> +			linux,code =3D <KEY_NEXT>;
> +			gpios =3D <&pio 6 9 GPIO_ACTIVE_LOW>; /* PG9 */
> +		};
> +
> +		key-left {
> +			label =3D "Left";
> +			linux,code =3D <KEY_PREVIOUS>;
> +			gpios =3D <&pio 6 10 GPIO_ACTIVE_LOW>; /* PG10 */
> +		};
> +	};
> +
> +	reg_3v3_mmc0: regulator-mmc0 {
> +		compatible =3D "regulator-fixed";
> +		regulator-name =3D "vdd-mmc0";
> +		regulator-min-microvolt =3D <3300000>;
> +		regulator-max-microvolt =3D <3300000>;
> +		pinctrl-names =3D "default";
> +		pinctrl-0 =3D <&pocketbook_reg_mmc0_pins>;

again, pinctrl not needed.

> +		gpio =3D <&pio 4 4 GPIO_ACTIVE_LOW>; /* PE4 */
> +		vin-supply =3D <&reg_vcc3v3>;
> +	};
> +};
> +
> +&cpu0 {
> +	cpu-supply =3D <&reg_dcdc2>;
> +};
> +
> +&ehci0 {
> +	status =3D "okay";
> +};
> +
> +&i2c0 {
> +	status =3D "okay";
> +
> +	axp209: pmic@34 {
> +		compatible =3D "x-powers,axp209";
> +		reg =3D <0x34>;
> +		interrupts =3D <0>;
> +	};
> +};
> +
> +#include "axp209.dtsi"
> +
> +&i2c1 {
> +	status =3D "okay";
> +
> +	pcf8563: rtc@51 {
> +		compatible =3D "nxp,pcf8563";
> +		reg =3D <0x51>;
> +		#clock-cells =3D <0>;
> +	};
> +};
> +
> +&i2c2 {
> +	status =3D "okay";
> +
> +	/* Touchpanel is connected here. */

Any reason why don't you specify touch panel device here?

> +};
> +
> +&lradc {
> +	vref-supply =3D <&reg_ldo2>;
> +	status =3D "okay";
> +
> +	button-300 {
> +		label =3D "Down";
> +		linux,code =3D <KEY_DOWN>;
> +		channel =3D <0>;
> +		voltage =3D <300000>;
> +	};
> +
> +	button-700 {
> +		label =3D "Up";
> +		linux,code =3D <KEY_UP>;
> +		channel =3D <0>;
> +		voltage =3D <700000>;
> +	};
> +
> +	button-1000 {
> +		label =3D "Left";
> +		linux,code =3D <KEY_LEFT>;
> +		channel =3D <0>;
> +		voltage =3D <1000000>;
> +	};
> +
> +	button-1200 {
> +		label =3D "Menu";
> +		linux,code =3D <KEY_MENU>;
> +		channel =3D <0>;
> +		voltage =3D <1200000>;
> +	};
> +
> +	button-1500 {
> +		label =3D "Right";
> +		linux,code =3D <KEY_RIGHT>;
> +		channel =3D <0>;
> +		voltage =3D <1500000>;
> +	};
> +};
> +
> +&mmc0 {
> +	vmmc-supply =3D <&reg_3v3_mmc0>;
> +	bus-width =3D <4>;
> +	cd-gpios =3D <&pio 6 0 GPIO_ACTIVE_LOW>; /* PG0 */
> +	status =3D "okay";
> +};
> +
> +&mmc2 {
> +	pinctrl-names =3D "default";
> +	pinctrl-0 =3D <&mmc2_4bit_pc_pins>;
> +	vmmc-supply =3D <&reg_vcc3v3>;
> +	bus-width =3D <4>;
> +	non-removable;
> +	status =3D "okay";
> +};
> +
> +&ohci0 {
> +	status =3D "okay";
> +};
> +
> +&otg_sram {
> +	status =3D "okay";
> +};
> +
> +&pio {
> +	led_pins_pocketbook: led-pin {
> +		pins =3D "PE8";
> +		function =3D "gpio_out";
> +	};
> +	pocketbook_btn_pins: btn-pins {
> +		pins =3D "PG9", "PG10";
> +		function =3D "gpio_in";
> +		bias-pull-up;
> +	};
> +	pocketbook_reg_mmc0_pins: reg-mmc0-pins {
> +		pins =3D "PE4";
> +		function =3D "gpio_out";
> +	};
> +};

Whole PIO node can be dropped.

Best regards,
Jernej

> +
> +&reg_dcdc2 {
> +	regulator-always-on;
> +	regulator-min-microvolt =3D <1000000>;
> +	regulator-max-microvolt =3D <1500000>;
> +	regulator-name =3D "vdd-cpu";
> +};
> +
> +&reg_dcdc3 {
> +	regulator-always-on;
> +	regulator-min-microvolt =3D <1000000>;
> +	regulator-max-microvolt =3D <1400000>;
> +	regulator-name =3D "vdd-int-dll";
> +};
> +
> +&reg_ldo1 {
> +	regulator-name =3D "vdd-rtc";
> +};
> +
> +&reg_ldo2 {
> +	regulator-always-on;
> +	regulator-min-microvolt =3D <3000000>;
> +	regulator-max-microvolt =3D <3000000>;
> +	regulator-name =3D "avcc";
> +};
> +
> +&reg_ldo3 {
> +	regulator-min-microvolt =3D <3300000>;
> +	regulator-max-microvolt =3D <3300000>;
> +	regulator-name =3D "vcc-wifi";
> +};
> +
> +&reg_usb0_vbus {
> +	status =3D "okay";
> +	gpio =3D <&pio 6 12 GPIO_ACTIVE_HIGH>; /* PG12 */
> +};
> +
> +&reg_usb1_vbus {
> +	gpio =3D <&pio 6 11 GPIO_ACTIVE_HIGH>; /* PG11 */
> +	status =3D "okay";
> +};
> +
> +&uart1 {
> +	pinctrl-names =3D "default";
> +	pinctrl-0 =3D <&uart1_pg_pins>;
> +	status =3D "okay";
> +};
> +
> +&usb_otg {
> +	dr_mode =3D "otg";
> +	status =3D "okay";
> +};
> +
> +&usb_power_supply {
> +	status =3D "okay";
> +};
> +
> +&battery_power_supply {
> +	status =3D "okay";
> +};
> +
> +&usbphy {
> +	usb0_id_det-gpios =3D <&pio 6 2 (GPIO_ACTIVE_HIGH | GPIO_PULL_UP)>; /* =
PG2 */
> +	usb0_vbus_det-gpios =3D <&axp_gpio 1 GPIO_ACTIVE_HIGH>;
> +	usb0_vbus-supply =3D <&reg_usb0_vbus>;
> +	usb1_vbus-supply =3D <&reg_usb1_vbus>;
> +	status =3D "okay";
> +};
>=20