linux-kernel - Re: [PATCH 3/3] ARM: dts: imx6sll: Add Rev A board support

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Date:   Wed, 4 Dec 2019 10:39:21 +0800
From:   Shawn Guo <shawnguo@...nel.org>
To:     Anson Huang <Anson.Huang@....com>
Cc:     robh+dt@...nel.org, mark.rutland@....com, s.hauer@...gutronix.de,
        kernel@...gutronix.de, festevam@...il.com,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, Linux-imx@....com
Subject: Re: [PATCH 3/3] ARM: dts: imx6sll: Add Rev A board support

On Wed, Nov 06, 2019 at 05:47:30PM +0800, Anson Huang wrote:
> i.MX6SLL EVK Rev A board is same with latest i.MX6SLL EVK board except
> eMMC can ONLY run at HS200 mode, add support for this board.
> 
> Signed-off-by: Anson Huang <Anson.Huang@....com>
> ---
>  arch/arm/boot/dts/Makefile             |  1 +
>  arch/arm/boot/dts/imx6sll-evk-reva.dts | 12 ++++++++++++
>  2 files changed, 13 insertions(+)
>  create mode 100644 arch/arm/boot/dts/imx6sll-evk-reva.dts
> 
> diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
> index 71f08e7..3845bbf 100644
> --- a/arch/arm/boot/dts/Makefile
> +++ b/arch/arm/boot/dts/Makefile
> @@ -557,6 +557,7 @@ dtb-$(CONFIG_SOC_IMX6SL) += \
>  	imx6sl-warp.dtb
>  dtb-$(CONFIG_SOC_IMX6SLL) += \
>  	imx6sll-evk.dtb \
> +	imx6sll-evk-reva.dtb \
>  	imx6sll-kobo-clarahd.dtb
>  dtb-$(CONFIG_SOC_IMX6SX) += \
>  	imx6sx-nitrogen6sx.dtb \
> diff --git a/arch/arm/boot/dts/imx6sll-evk-reva.dts b/arch/arm/boot/dts/imx6sll-evk-reva.dts
> new file mode 100644
> index 0000000..7ca2563
> --- /dev/null
> +++ b/arch/arm/boot/dts/imx6sll-evk-reva.dts
> @@ -0,0 +1,12 @@
> +// SPDX-License-Identifier: (GPL-2.0 OR MIT)
> +/*
> + * Copyright 2016 Freescale Semiconductor, Inc.
> + * Copyright 2017-2019 NXP.
> + *
> + */
> +
> +#include "imx6sll-evk.dts"
> +
> +&usdhc2 {
> +	compatible = "fsl,imx6sll-usdhc", "fsl,imx6sx-usdhc";

It looks odd to me that we need to deal with a board level difference
with a SoC level compatible.  The USDHC compatible should be solely
determined by the IP programming model, not the board level capability.

Shawn

> +};
> -- 
> 2.7.4
>