linux-kernel - Re: [PATCH v2 4/5] ARM: mstar: Add dts for msc313(e) based BreadBee boards

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Date:   Thu, 11 Jun 2020 15:45:29 +0200
From:   Andreas Färber <afaerber@...e.de>
To:     Daniel Palmer <daniel@...f.com>
Cc:     k@...ko.eu, tim.bird@...y.com, devicetree@...r.kernel.org,
        Daniel Palmer <daniel@...ngy.jp>,
        Rob Herring <robh+dt@...nel.org>,
        Russell King <linux@...linux.org.uk>,
        Sam Ravnborg <sam@...nborg.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Heiko Stuebner <heiko.stuebner@...obroma-systems.com>,
        Stephan Gerhold <stephan@...hold.net>,
        Lubomir Rintel <lkundrak@...sk>,
        Maxime Ripard <mripard@...nel.org>,
        Mark Brown <broonie@...nel.org>, allen <allen.chen@....com.tw>,
        Mauro Carvalho Chehab <mchehab+huawei@...nel.org>,
        "David S. Miller" <davem@...emloft.net>,
        Jonathan Corbet <corbet@....net>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Arnd Bergmann <arnd@...db.de>, Mike Rapoport <rppt@...nel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Doug Anderson <armlinux@...isordat.com>,
        Benjamin Gaignard <benjamin.gaignard@...aro.org>,
        Gregory Fong <gregory.0xf0@...il.com>,
        Bartosz Golaszewski <bgolaszewski@...libre.com>,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Nathan Chancellor <natechancellor@...il.com>,
        Ard Biesheuvel <ardb@...nel.org>,
        Nathan Huckleberry <nhuck15@...il.com>,
        Marc Zyngier <maz@...nel.org>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 4/5] ARM: mstar: Add dts for msc313(e) based BreadBee
 boards

Am 10.06.20 um 11:04 schrieb Daniel Palmer:
> BreadBee is an opensource development board based on the
> MStar msc313(e) SoC.
> 
> Hardware details, schematics and so on can be found at:
> https://github.com/breadbee/breadbee
> 
> Signed-off-by: Daniel Palmer <daniel@...f.com>
> ---
>   arch/arm/boot/dts/Makefile                    |  3 +++
>   .../dts/infinity-msc313-breadbee_crust.dts    | 25 +++++++++++++++++++
>   .../boot/dts/infinity3-msc313e-breadbee.dts   | 25 +++++++++++++++++++
>   3 files changed, 53 insertions(+)
>   create mode 100644 arch/arm/boot/dts/infinity-msc313-breadbee_crust.dts
>   create mode 100644 arch/arm/boot/dts/infinity3-msc313e-breadbee.dts
> 
> diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
> index e6a1cac0bfc7..4a5f8075a4f6 100644
> --- a/arch/arm/boot/dts/Makefile
> +++ b/arch/arm/boot/dts/Makefile
> @@ -1342,6 +1342,9 @@ dtb-$(CONFIG_ARCH_MEDIATEK) += \
>   	mt8127-moose.dtb \
>   	mt8135-evbp1.dtb
>   dtb-$(CONFIG_ARCH_MILBEAUT) += milbeaut-m10v-evb.dtb
> +dtb-$(CONFIG_ARCH_MSTARV7) += \
> +	infinity-msc313-breadbee_crust.dtb \
> +	infinity3-msc313e-breadbee.dtb
>   dtb-$(CONFIG_ARCH_ZX) += zx296702-ad1.dtb
>   dtb-$(CONFIG_ARCH_ASPEED) += \
>   	aspeed-ast2500-evb.dtb \
> diff --git a/arch/arm/boot/dts/infinity-msc313-breadbee_crust.dts b/arch/arm/boot/dts/infinity-msc313-breadbee_crust.dts
> new file mode 100644
> index 000000000000..8a827c8fd8b2
> --- /dev/null
> +++ b/arch/arm/boot/dts/infinity-msc313-breadbee_crust.dts
> @@ -0,0 +1,25 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Copyright (c) 2019 thingy.jp.
> + * Author: Daniel Palmer <daniel@...ngy.jp>
> + */
> +
> +/dts-v1/;
> +#include "infinity-msc313.dtsi"
> +
> +/ {
> +	model = "breadbee-crust";

This is user-visible text, so "BreadBee Crust" or so?

> +	compatible = "thingyjp,breadbee-crust", "mstar,infinity";
> +
> +	aliases {
> +		serial0 = &pm_uart;
> +	};
> +
> +	chosen {
> +		stdout-path = "serial0:115200n8";
> +	};
> +};
> +
> +&pm_uart {
> +	status = "okay";

Might this be a more suited place for temporary clock-frequency? For 
lack of clk driver it would seem to depend on the board's bootloader 
pre-configuring it rather than being a default of the SoC.

> +};
> diff --git a/arch/arm/boot/dts/infinity3-msc313e-breadbee.dts b/arch/arm/boot/dts/infinity3-msc313e-breadbee.dts
> new file mode 100644
> index 000000000000..423bb32e6b74
> --- /dev/null
> +++ b/arch/arm/boot/dts/infinity3-msc313e-breadbee.dts
> @@ -0,0 +1,25 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Copyright (c) 2019 thingy.jp.
> + * Author: Daniel Palmer <daniel@...ngy.jp>
> + */
> +
> +/dts-v1/;
> +#include "infinity3-msc313e.dtsi"
> +
> +/ {
> +	model = "breadbee";

Ditto, "BreadBee"?

> +	compatible = "thingyjp,breadbee", "mstar,infinity3";
> +
> +	aliases {
> +		serial0 = &pm_uart;
> +	};
> +
> +	chosen {
> +		stdout-path = "serial0:115200n8";
> +	};
> +};
> +
> +&pm_uart {
> +	status = "okay";

Ditto, clock-frequency?

> +};

Regards,
Andreas

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