linux-kernel - Re: [PATCH v2 10/10] ARM: dts: suniv: add device tree for PopStick v1.1

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Message-ID: <12461098-aea7-e486-f303-ef2387a6ae1f@linaro.org>
Date:   Wed, 12 Oct 2022 09:11:12 -0400
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Icenowy Zheng <uwu@...nowy.me>, Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Chen-Yu Tsai <wens@...e.org>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        Samuel Holland <samuel@...lland.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Andre Przywara <andre.przywara@....com>
Cc:     soc@...nel.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-sunxi@...ts.linux.dev, linux-phy@...ts.infradead.org,
        linux-usb@...r.kernel.org
Subject: Re: [PATCH v2 10/10] ARM: dts: suniv: add device tree for PopStick
 v1.1

On 12/10/2022 01:56, Icenowy Zheng wrote:
> PopStick is a minimal Allwinner F1C200s dongle, with its USB controller
> wired to a USB Type-A port, a SD slot and a SPI NAND flash on board, and
> an on-board CH340 USB-UART converted connected to F1C200s's UART0.


(...)

> +
> +	chosen {
> +		stdout-path = "serial0:115200n8";
> +	};
> +
> +	leds {
> +		compatible = "gpio-leds";
> +
> +		led {
> +			function = LED_FUNCTION_STATUS;
> +			color = <LED_COLOR_ID_GREEN>;
> +			gpios = <&pio 4 6 GPIO_ACTIVE_HIGH>; /* PE6 */
> +			linux,default-trigger = "heartbeat";
> +		};
> +	};
> +
> +	reg_vcc3v3: vcc3v3 {

Generic node names, so at least generic "regulator" prefix or suffix.

> +		compatible = "regulator-fixed";
> +		regulator-name = "vcc3v3";
> +		regulator-min-microvolt = <3300000>;
> +		regulator-max-microvolt = <3300000>;
> +	};
> +};
> +
> +&mmc0 {
> +	cd-gpios = <&pio 4 3 GPIO_ACTIVE_LOW>; /* PE3 */
> +	bus-width = <4>;
> +	disable-wp;
> +	status = "okay";

Keep status as last property.

> +	vmmc-supply = <&reg_vcc3v3>;
> +};
> +
> +&spi0 {
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&spi0_pc_pins>;
> +	status = "okay";
> +
> +	flash@0 {
> +		#address-cells = <1>;
> +		#size-cells = <1>;
> +		compatible = "spi-nand";
> +		reg = <0>;

compatible and reg are by convention the first properties.

> +		spi-max-frequency = <40000000>;
> +

Best regards,
Krzysztof