Re: [PATCH 2/2] arm64: dts: rockchip: rk3399: Radxa ROCK 4C+

From: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
To: Jagan Teki <jagan@amarulasolutions.com>,
	Heiko Stuebner <heiko@sntech.de>,
	Rob Herring <robh+dt@kernel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>
Cc: devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	linux-rockchip@lists.infradead.org,
	linux-amarula@amarulasolutions.com,
	Stephen Chen <stephen@radxa.com>,
	Manoj Sai <abbaraju.manojsai@amarulasolutions.com>
Subject: Re: [PATCH 2/2] arm64: dts: rockchip: rk3399: Radxa ROCK 4C+
Date: Wed, 24 Aug 2022 15:46:00 +0300	[thread overview]
Message-ID: <cb52fd9d-6b34-b0f7-ec00-0f821ca51d3c@linaro.org> (raw)
In-Reply-To: <20220824080903.3696847-2-jagan@amarulasolutions.com>

On 24/08/2022 11:09, Jagan Teki wrote:
> Add support for Radxa ROCK 4C+ SBC.
> 
> 4C+ replaced DP with HDMI and updated FPC connectors
> for MIPI DSI/CSI compared to 4C revision.
> 
> Also, an official naming convention from Radxa mention
> to remove Pi from board name, so this 4C+ is named as
> Radxa ROCK 4C+ not Radxa ROCK Pi 4C+.
> 
> Signed-off-by: Stephen Chen <stephen@radxa.com>
> Signed-off-by: Manoj Sai <abbaraju.manojsai@amarulasolutions.com>
> Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
> ---
>  arch/arm64/boot/dts/rockchip/Makefile         |   1 +
>  .../boot/dts/rockchip/rk3399-rock-4c-plus.dts | 641 ++++++++++++++++++
>  2 files changed, 642 insertions(+)
>  create mode 100644 arch/arm64/boot/dts/rockchip/rk3399-rock-4c-plus.dts
> 
> diff --git a/arch/arm64/boot/dts/rockchip/Makefile b/arch/arm64/boot/dts/rockchip/Makefile
> index ef79a672804a..f92637eb6f90 100644
> --- a/arch/arm64/boot/dts/rockchip/Makefile
> +++ b/arch/arm64/boot/dts/rockchip/Makefile
> @@ -46,6 +46,7 @@ dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-puma-haikou.dtb
>  dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-roc-pc.dtb
>  dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-roc-pc-mezzanine.dtb
>  dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-roc-pc-plus.dtb
> +dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-rock-4c-plus.dtb
>  dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-rock-pi-4a.dtb
>  dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-rock-pi-4a-plus.dtb
>  dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-rock-pi-4b.dtb
> diff --git a/arch/arm64/boot/dts/rockchip/rk3399-rock-4c-plus.dts b/arch/arm64/boot/dts/rockchip/rk3399-rock-4c-plus.dts
> new file mode 100644
> index 000000000000..cf9997c011d2
> --- /dev/null
> +++ b/arch/arm64/boot/dts/rockchip/rk3399-rock-4c-plus.dts
> @@ -0,0 +1,641 @@
> +// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
> +/*
> + * Copyright (c) 2019 Fuzhou Rockchip Electronics Co., Ltd
> + * Copyright (c) 2019 Radxa Limited
> + * Copyright (c) 2022 Amarula Solutions(India)
> + */
> +
> +/dts-v1/;
> +#include "rk3399.dtsi"
> +#include "rk3399-opp.dtsi"
> +
> +/ {
> +	model = "Radxa ROCK 4C+";
> +	compatible = "radxa,rock-4c-plus", "rockchip,rk3399";
> +
> +	aliases {
> +		mmc0 = &sdmmc;
> +	};
> +
> +	chosen {
> +		stdout-path = "serial2:1500000n8";
> +	};
> +
> +	sdio_pwrseq: sdio-pwrseq {
> +		compatible = "mmc-pwrseq-simple";
> +		clocks = <&rk809 1>;
> +		clock-names = "ext_clock";
> +		pinctrl-names = "default";
> +		pinctrl-0 = <&wifi_enable_h>;
> +		reset-gpios = <&gpio0 RK_PB2 GPIO_ACTIVE_LOW>;
> +	};
> +
> +	clkin_gmac: external-gmac-clock {
> +		compatible = "fixed-clock";
> +		clock-frequency = <125000000>;
> +		clock-output-names = "clkin_gmac";
> +		#clock-cells = <0>;
> +	};
> +
> +	vcc5v0_sys: vcc-sys {

Use consistent prefixes or suffixes, so vcc-sys-regulator.

(...)

> +	vdd_gpu: syr828@41 {

Node names should be generic.
https://devicetree-specification.readthedocs.io/en/latest/chapter2-devicetree-basics.html#generic-names-recommendation

Best regards,
Krzysztof

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