linux-kernel - Re: [RESEND,v2,8/9] arm64: dts: mediatek: add mt7986a support

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Date:   Tue, 14 Sep 2021 19:55:24 +0200
From:   Matthias Brugger <matthias.bgg@...il.com>
To:     Sam Shih <sam.shih@...iatek.com>, Rob Herring <robh+dt@...nel.org>,
        Sean Wang <sean.wang@...nel.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Matt Mackall <mpm@...enic.com>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Wim Van Sebroeck <wim@...ux-watchdog.org>,
        Guenter Roeck <linux@...ck-us.net>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Hsin-Yi Wang <hsinyi@...omium.org>,
        Enric Balletbo i Serra <enric.balletbo@...labora.com>,
        Fabien Parent <fparent@...libre.com>,
        Seiya Wang <seiya.wang@...iatek.com>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-mediatek@...ts.infradead.org, linux-gpio@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-crypto@...r.kernel.org,
        linux-serial@...r.kernel.org, linux-watchdog@...r.kernel.org,
        linux-clk@...r.kernel.org
Cc:     John Crispin <john@...ozen.org>, Ryder Lee <Ryder.Lee@...iatek.com>
Subject: Re: [RESEND,v2,8/9] arm64: dts: mediatek: add mt7986a support



On 14/09/2021 10:51, Sam Shih wrote:
> Add basic chip support for Mediatek mt7986a, include
> uart nodes with correct clocks, rng node with correct clock,
> and watchdog node and mt7986a pinctrl node.
> 
> Add cpu node, timer node, gic node, psci and reserved-memory node
> for ARM Trusted Firmware,
> 
> Add clock controller nodes, include 40M clock source, topckgen, infracfg,
> apmixedsys and ethernet subsystem.
> 
> Signed-off-by: Sam Shih <sam.shih@...iatek.com>
> 
> ---
> v2: modified clock and uart node due to clock driver updated
> ---
>   arch/arm64/boot/dts/mediatek/Makefile        |   1 +
>   arch/arm64/boot/dts/mediatek/mt7986a-rfb.dts |  49 ++++
>   arch/arm64/boot/dts/mediatek/mt7986a.dtsi    | 227 +++++++++++++++++++
>   3 files changed, 277 insertions(+)
>   create mode 100644 arch/arm64/boot/dts/mediatek/mt7986a-rfb.dts
>   create mode 100644 arch/arm64/boot/dts/mediatek/mt7986a.dtsi
> 
> diff --git a/arch/arm64/boot/dts/mediatek/Makefile b/arch/arm64/boot/dts/mediatek/Makefile
> index 4f68ebed2e31..e6c3a73b9e4a 100644
> --- a/arch/arm64/boot/dts/mediatek/Makefile
> +++ b/arch/arm64/boot/dts/mediatek/Makefile
> @@ -7,6 +7,7 @@ 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-$(CONFIG_ARCH_MEDIATEK) += mt7986a-rfb.dtb
>   dtb-$(CONFIG_ARCH_MEDIATEK) += mt8167-pumpkin.dtb
>   dtb-$(CONFIG_ARCH_MEDIATEK) += mt8173-elm.dtb
>   dtb-$(CONFIG_ARCH_MEDIATEK) += mt8173-elm-hana.dtb
> diff --git a/arch/arm64/boot/dts/mediatek/mt7986a-rfb.dts b/arch/arm64/boot/dts/mediatek/mt7986a-rfb.dts
> new file mode 100644
> index 000000000000..a58347c09ab2
> --- /dev/null
> +++ b/arch/arm64/boot/dts/mediatek/mt7986a-rfb.dts
> @@ -0,0 +1,49 @@
> +// SPDX-License-Identifier: (GPL-2.0 OR MIT)
> +/*
> + * Copyright (C) 2021 MediaTek Inc.
> + * Author: Sam.Shih <sam.shih@...iatek.com>
> + */
> +
> +/dts-v1/;
> +#include "mt7986a.dtsi"
> +
> +/ {
> +	model = "MediaTek MT7986a RFB";
> +	compatible = "mediatek,mt7986a-rfb";
> +	chosen {
> +		bootargs = "console=ttyS0,115200n1 loglevel=8  \
> +				earlycon=uart8250,mmio32,0x11002000";

We should be able to achieve this by using the stdout-path instead.

Regards,
Matthias