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

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Message-ID: <267d43a13a08b6f6f4914b0cc0dd49eae60a99cc.camel@mediatek.com>
Date:   Tue, 18 Jul 2023 08:05:11 +0000
From:   Jason-ch Chen (陳建豪) 
        <Jason-ch.Chen@...iatek.com>
To:     "matthias.bgg@...il.com" <matthias.bgg@...il.com>,
        "krzysztof.kozlowski@...aro.org" <krzysztof.kozlowski@...aro.org>,
        "conor+dt@...nel.org" <conor+dt@...nel.org>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "krzysztof.kozlowski+dt@...aro.org" 
        <krzysztof.kozlowski+dt@...aro.org>,
        "angelogioacchino.delregno@...labora.com" 
        <angelogioacchino.delregno@...labora.com>
CC:     "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "wenst@...omium.org" <wenst@...omium.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "nfraprado@...labora.com" <nfraprado@...labora.com>,
        "linux-mediatek@...ts.infradead.org" 
        <linux-mediatek@...ts.infradead.org>,
        Project_Global_Chrome_Upstream_Group 
        <Project_Global_Chrome_Upstream_Group@...iatek.com>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>
Subject: Re: [PATCH v3 4/4] arm64: dts: Add MediaTek MT8188 dts and evaluation
 board and Makefile

Hi Krzysztof,

On Tue, 2023-07-18 at 09:41 +0200, Krzysztof Kozlowski wrote:
>  	 
> External email : Please do not click links or open attachments until
> you have verified the sender or the content.
>  On 18/07/2023 08:36, Jason-ch Chen (陳建豪) wrote:
> > Hi Krzysztof,
> > 
> > On Mon, 2023-07-17 at 21:58 +0200, Krzysztof Kozlowski wrote:
> >>   
> >> External email : Please do not click links or open attachments
> until
> >> you have verified the sender or the content.
> >>  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).
> >>
> > 
> > Thank you for your review.
> > I actually ran dtbs_check, but it didn't display any problems here.
> I
> > will remove it in the next version.
> 
> Ah, right, it is coming from dtschema, so the property could stay. I
> don't understand though why adding 0 as seed. Shouldn't your firmware
> set it?
> 

This was my negligence. Indeed, it is not necessary to include it in
the DTS. I will remove it next time. Thank you.

> Best regards,
> Krzysztof
> 

Regards,
Jason