linux-kernel - Re: [PATCH] riscv: dts: starfive: add Milkv Mars board device tree

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Message-ID: <ef4eda2a-4be5-4992-a315-d02e1a36b656@linaro.org>
Date:   Sun, 26 Nov 2023 11:27:20 +0100
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Jisheng Zhang <jszhang@...nel.org>,
        Emil Renner Berthing <kernel@...il.dk>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>
Cc:     linux-riscv@...ts.infradead.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org
Subject: Re: [PATCH] riscv: dts: starfive: add Milkv Mars board device tree

On 26/11/2023 11:00, Jisheng Zhang wrote:
> The Milkv Mars is a development board based on the Starfive JH7110 SoC.
> The board features:
> 
> - JH7110 SoC
> - 1/2/4/8 GiB LPDDR4 DRAM
> - AXP15060 PMIC
> - 40 pin GPIO header
> - 3x USB 3.0 host port
> - 1x USB 2.0 host port
> - 1x M.2 E-Key
> - 1x eMMC slot
> - 1x MicroSD slot
> - 1x QSPI Flash
> - 1x 1Gbps Ethernet port
> - 1x HDMI port
> - 1x 2-lane DSI and 1x 4-lane DSI
> - 1x 2-lane CSI
> 
> Add the devicetree file describing the currently supported features,
> namely PMIC, UART, SD card, QSPI Flash, eMMC and Ethernet.
> 
> Signed-off-by: Jisheng Zhang <jszhang@...nel.org>
> ---
>  arch/riscv/boot/dts/starfive/Makefile         |   2 +
>  .../boot/dts/starfive/jh7110-milkv-mars.dts   | 634 ++++++++++++++++++
>  2 files changed, 636 insertions(+)
>  create mode 100644 arch/riscv/boot/dts/starfive/jh7110-milkv-mars.dts
> 
> diff --git a/arch/riscv/boot/dts/starfive/Makefile b/arch/riscv/boot/dts/starfive/Makefile
> index 0141504c0f5c..fe0a62cc4759 100644
> --- a/arch/riscv/boot/dts/starfive/Makefile
> +++ b/arch/riscv/boot/dts/starfive/Makefile
> @@ -10,3 +10,5 @@ dtb-$(CONFIG_ARCH_STARFIVE) += jh7100-starfive-visionfive-v1.dtb
>  
>  dtb-$(CONFIG_ARCH_STARFIVE) += jh7110-starfive-visionfive-2-v1.2a.dtb
>  dtb-$(CONFIG_ARCH_STARFIVE) += jh7110-starfive-visionfive-2-v1.3b.dtb
> +
> +dtb-$(CONFIG_ARCH_STARFIVE) += jh7110-milkv-mars.dtb
> diff --git a/arch/riscv/boot/dts/starfive/jh7110-milkv-mars.dts b/arch/riscv/boot/dts/starfive/jh7110-milkv-mars.dts
> new file mode 100644
> index 000000000000..41cc67f53bbe
> --- /dev/null
> +++ b/arch/riscv/boot/dts/starfive/jh7110-milkv-mars.dts
> @@ -0,0 +1,634 @@
> +// SPDX-License-Identifier: GPL-2.0 OR MIT
> +/*
> + * Copyright (C) 2022 StarFive Technology Co., Ltd.
> + * Copyright (C) 2022 Emil Renner Berthing <kernel@...il.dk>
> + * Copyright (C) 2023 Jisheng Zhang <jszhang@...nel.org>
> + */
> +
> +/dts-v1/;
> +#include "jh7110.dtsi"
> +#include "jh7110-pinfunc.h"
> +#include <dt-bindings/gpio/gpio.h>
> +
> +/ {
> +	aliases {
> +		ethernet0 = &gmac0;
> +		ethernet1 = &gmac1;
> +		i2c0 = &i2c0;
> +		i2c2 = &i2c2;
> +		i2c5 = &i2c5;
> +		i2c6 = &i2c6;
> +		mmc0 = &mmc0;
> +		mmc1 = &mmc1;
> +		serial0 = &uart0;
> +	};
> +

You miss board compatible and bindings.

> +	chosen {
> +		stdout-path = "serial0:115200n8";
> +	};
> +
> +	cpus {

Board should not bring new CPU nodes. Override by label instead.


> +		timebase-frequency = <4000000>;
> +	};
> +
> +	memory@...00000 {
> +		device_type = "memory";
> +		reg = <0x0 0x40000000 0x1 0x0>;
> +	};
> +
> +	gpio-restart {
> +		compatible = "gpio-restart";
> +		gpios = <&sysgpio 35 GPIO_ACTIVE_HIGH>;
> +		priority = <224>;
> +	};
> +
> +	pwmdac_codec: pwmdac-codec {

audio-codec

> +		compatible = "linux,spdif-dit";
> +		#sound-dai-cells = <0>;
> +	};
> +
> +	sound-pwmdac {

sound


Best regards,
Krzysztof