linux-kernel - Re: [PATCH v3 4/4] arm64: dts: Add MediaTek MT8188 dts and evaluation board and Makefile

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Date:   Mon, 17 Jul 2023 21:58:06 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Jason-ch Chen <jason-ch.chen@...iatek.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
Cc:     Nícolas F . R . A . Prado 
        <nfraprado@...labora.com>, Chen-Yu Tsai <wenst@...omium.org>,
        Project_Global_Chrome_Upstream_Group@...iatek.com,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, linux-mediatek@...ts.infradead.org
Subject: Re: [PATCH v3 4/4] arm64: dts: Add MediaTek MT8188 dts and evaluation
 board and Makefile

On 17/07/2023 14:03, Jason-ch Chen wrote:
> From: jason-ch chen <Jason-ch.Chen@...iatek.com>
> 
> MT8188 is a SoC based on 64bit ARMv8 architecture. It contains 6 CA55
> and 2 CA78 cores. MT8188 share many HW IP with MT65xx series.
> 
> We add basic chip support for MediaTek MT8188 on evaluation board.
> 
> Signed-off-by: jason-ch chen <Jason-ch.Chen@...iatek.com>
> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
> ---
>  arch/arm64/boot/dts/mediatek/Makefile       |   1 +
>  arch/arm64/boot/dts/mediatek/mt8188-evb.dts | 401 +++++++++
>  arch/arm64/boot/dts/mediatek/mt8188.dtsi    | 951 ++++++++++++++++++++
>  3 files changed, 1353 insertions(+)
>  create mode 100644 arch/arm64/boot/dts/mediatek/mt8188-evb.dts
>  create mode 100644 arch/arm64/boot/dts/mediatek/mt8188.dtsi
> 
> diff --git a/arch/arm64/boot/dts/mediatek/Makefile b/arch/arm64/boot/dts/mediatek/Makefile
> index c99c3372a4b5..9bd2324259a3 100644
> --- a/arch/arm64/boot/dts/mediatek/Makefile
> +++ b/arch/arm64/boot/dts/mediatek/Makefile
> @@ -44,6 +44,7 @@ dtb-$(CONFIG_ARCH_MEDIATEK) += mt8183-kukui-krane-sku0.dtb
>  dtb-$(CONFIG_ARCH_MEDIATEK) += mt8183-kukui-krane-sku176.dtb
>  dtb-$(CONFIG_ARCH_MEDIATEK) += mt8183-pumpkin.dtb
>  dtb-$(CONFIG_ARCH_MEDIATEK) += mt8186-evb.dtb
> +dtb-$(CONFIG_ARCH_MEDIATEK) += mt8188-evb.dtb
>  dtb-$(CONFIG_ARCH_MEDIATEK) += mt8192-asurada-hayato-r1.dtb
>  dtb-$(CONFIG_ARCH_MEDIATEK) += mt8192-asurada-spherion-r0.dtb
>  dtb-$(CONFIG_ARCH_MEDIATEK) += mt8192-evb.dtb
> diff --git a/arch/arm64/boot/dts/mediatek/mt8188-evb.dts b/arch/arm64/boot/dts/mediatek/mt8188-evb.dts
> new file mode 100644
> index 000000000000..d8906172390e
> --- /dev/null
> +++ b/arch/arm64/boot/dts/mediatek/mt8188-evb.dts
> @@ -0,0 +1,401 @@
> +// SPDX-License-Identifier: (GPL-2.0 OR MIT)
> +/*
> + * Copyright (C) 2023 MediaTek Inc.
> + */
> +/dts-v1/;
> +#include "mt8188.dtsi"
> +#include "mt6359.dtsi"
> +
> +/ {
> +	model = "MediaTek MT8188 evaluation board";
> +	compatible = "mediatek,mt8188-evb", "mediatek,mt8188";
> +
> +	aliases {
> +		serial0 = &uart0;
> +		i2c0 = &i2c0;
> +		i2c1 = &i2c1;
> +		i2c2 = &i2c2;
> +		i2c3 = &i2c3;
> +		i2c4 = &i2c4;
> +		i2c5 = &i2c5;
> +		i2c6 = &i2c6;
> +		mmc0 = &mmc0;
> +	};
> +
> +	chosen: chosen {
> +		stdout-path = "serial0:115200n8";
> +		kaslr-seed = <0 0>;

It does not look like you tested the DTS against bindings. Please run
`make dtbs_check` (see
Documentation/devicetree/bindings/writing-schema.rst or
https://www.linaro.org/blog/tips-and-tricks-for-validating-devicetree-sources-with-the-devicetree-schema/
for instructions).

> +	};
> +
> +	memory@...00000 {
> +		device_type = "memory";
> +		reg = <0 0x40000000 0 0x80000000>;
> +	};
> +
> +	reserved_memory: reserved-memory {
> +		#address-cells = <2>;
> +		#size-cells = <2>;
> +		ranges;
> +
> +		scp_mem_reserved: scp_mem_region {

No underscores in node names.

> +			compatible = "shared-dma-pool";
> +			reg = <0 0x50000000 0 0x2900000>;
> +			no-map;
> +		};
> +	};


Best regards,
Krzysztof