linux-kernel - Re: [PATCH 4/4] arm64: dts: mediatek: Add Cudy WR3000 V1

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Date: Wed, 21 Feb 2024 11:11:14 +0100
From: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
To: Rafał Miłecki <zajec5@...il.com>,
 Matthias Brugger <matthias.bgg@...il.com>, Rob Herring <robh@...nel.org>,
 Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
 Conor Dooley <conor+dt@...nel.org>
Cc: Chen-Yu Tsai <wenst@...omium.org>, Hsin-Yi Wang <hsinyi@...omium.org>,
 Nícolas F . R . A . Prado <nfraprado@...labora.com>,
 Heiko Stuebner <heiko.stuebner@...rry.de>,
 Jernej Skrabec <jernej.skrabec@...il.com>,
 Chris Morgan <macromorgan@...mail.com>,
 Linus Walleij <linus.walleij@...aro.org>, Sean Wang
 <sean.wang@...iatek.com>, devicetree@...r.kernel.org,
 linux-arm-kernel@...ts.infradead.org, linux-mediatek@...ts.infradead.org,
 linux-kernel@...r.kernel.org, Rafał Miłecki
 <rafal@...ecki.pl>
Subject: Re: [PATCH 4/4] arm64: dts: mediatek: Add Cudy WR3000 V1

Il 21/02/24 08:35, Rafał Miłecki ha scritto:
> From: Rafał Miłecki <rafal@...ecki.pl>
> 
> Cudy WR3000 V1 is an MT7981B (AKA Filogic 820) based wireless router. It
> has 256 MiB of RAM, some LEDs & buttons and (not described yet) 4
> Ethernet ports.
> 
> Signed-off-by: Rafał Miłecki <rafal@...ecki.pl>
> ---
>   arch/arm64/boot/dts/mediatek/Makefile         |  1 +
>   .../dts/mediatek/mt7981b-cudy-wr3000-v1.dts   | 74 +++++++++++++++++++
>   2 files changed, 75 insertions(+)
>   create mode 100644 arch/arm64/boot/dts/mediatek/mt7981b-cudy-wr3000-v1.dts
> 
> diff --git a/arch/arm64/boot/dts/mediatek/Makefile b/arch/arm64/boot/dts/mediatek/Makefile
> index 37b4ca3a87c9..96da4ad640aa 100644
> --- a/arch/arm64/boot/dts/mediatek/Makefile
> +++ b/arch/arm64/boot/dts/mediatek/Makefile
> @@ -8,6 +8,7 @@ dtb-$(CONFIG_ARCH_MEDIATEK) += mt6797-evb.dtb
>   dtb-$(CONFIG_ARCH_MEDIATEK) += mt6797-x20-dev.dtb
>   dtb-$(CONFIG_ARCH_MEDIATEK) += mt7622-rfb1.dtb
>   dtb-$(CONFIG_ARCH_MEDIATEK) += mt7622-bananapi-bpi-r64.dtb
> +dtb-$(CONFIG_ARCH_MEDIATEK) += mt7981b-cudy-wr3000-v1.dtb
>   dtb-$(CONFIG_ARCH_MEDIATEK) += mt7981b-xiaomi-ax3000t.dtb
>   dtb-$(CONFIG_ARCH_MEDIATEK) += mt7986a-acelink-ew-7886cax.dtb
>   dtb-$(CONFIG_ARCH_MEDIATEK) += mt7986a-bananapi-bpi-r3.dtb
> diff --git a/arch/arm64/boot/dts/mediatek/mt7981b-cudy-wr3000-v1.dts b/arch/arm64/boot/dts/mediatek/mt7981b-cudy-wr3000-v1.dts
> new file mode 100644
> index 000000000000..cb36a089518a
> --- /dev/null
> +++ b/arch/arm64/boot/dts/mediatek/mt7981b-cudy-wr3000-v1.dts
> @@ -0,0 +1,74 @@
> +// SPDX-License-Identifier: GPL-2.0-only OR MIT
> +
> +/dts-v1/;
> +#include <dt-bindings/input/input.h>
> +#include <dt-bindings/gpio/gpio.h>
> +#include <dt-bindings/leds/common.h>
> +
> +#include "mt7981b.dtsi"
> +
> +/ {
> +	compatible = "cudy,wr3000-v1", "mediatek,mt7981b";
> +	model = "Cudy WR3000 V1";
> +
> +	memory@...00000 {
> +		reg = <0 0x40000000 0 0x10000000>;
> +		device_type = "memory";
> +	};
> +
> +	keys {
> +		compatible = "gpio-keys";
> +
> +		key-wps {
> +			label = "WPS";
> +			gpios = <&pio 0 GPIO_ACTIVE_LOW>;
> +			linux,code = <KEY_WPS_BUTTON>;
> +		};
> +
> +		key-reset {
> +			label = "RESET";
> +			gpios = <&pio 1 GPIO_ACTIVE_LOW>;
> +			linux,code = <KEY_RESTART>;
> +		};
> +	};
> +
> +	leds {
> +		compatible = "gpio-leds";
> +
> +		led-0 {
> +			function = LED_FUNCTION_WAN;
> +			color = <LED_COLOR_ID_BLUE>;
> +			gpios = <&pio 5 GPIO_ACTIVE_LOW>;

Can we please order those properties alphabetically, as it doesn't impact
on human readability in any way?
Just a nitpick, anyway.

color = <LED_COLOR_ID_BLUE>;
function = LED_FUNCTION_WAN;
gpios = <&pio 5 GPIO_ACTIVE_LOW>;

> +		};
> +
> +		led-1 {
> +			function = LED_FUNCTION_WLAN_2GHZ;
> +			color = <LED_COLOR_ID_BLUE>;
> +			gpios = <&pio 6 GPIO_ACTIVE_LOW>;
> +		};
> +
> +		led-2 {
> +			function = LED_FUNCTION_WLAN_5GHZ;
> +			color = <LED_COLOR_ID_BLUE>;
> +			gpios = <&pio 7 GPIO_ACTIVE_LOW>;
> +		};
> +
> +		led-3 {
> +			function = LED_FUNCTION_LAN;
> +			color = <LED_COLOR_ID_BLUE>;
> +			gpios = <&pio 9 GPIO_ACTIVE_LOW>;
> +		};
> +
> +		led-4 {
> +			function = LED_FUNCTION_STATUS;
> +			color = <LED_COLOR_ID_BLUE>;
> +			gpios = <&pio 10 GPIO_ACTIVE_LOW>;
> +		};
> +
> +		led-5 {
> +			function = "online";

Uhm, what does "online" mean?

Are you sure that you can't use any of the LED_FUNCTION_XXX standard definitions?

Cheers,
Angelo