linux-kernel - Re: [PATCH v3 1/3] mmc: dt-bindings: update Mediatek MMC bindings

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Message-ID: <CAPDyKFpXA_fDDQi+gqf2f3dFxkjH6D+7drTPuimuJafWxoCirg@mail.gmail.com>
Date:   Fri, 20 Jan 2017 08:52:25 +0100
From:   Ulf Hansson <ulf.hansson@...aro.org>
To:     Yong Mao <yong.mao@...iatek.com>
Cc:     Linus Walleij <linus.walleij@...aro.org>,
        Chaotian Jing <chaotian.jing@...iatek.com>,
        Eddie Huang <eddie.huang@...iatek.com>,
        Chunfeng Yun <chunfeng.yun@...iatek.com>,
        "linux-mmc@...r.kernel.org" <linux-mmc@...r.kernel.org>,
        srv_heupstream <srv_heupstream@...iatek.com>,
        linux-mediatek@...ts.infradead.org,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        Rob Herring <robh+dt@...nel.org>
Subject: Re: [PATCH v3 1/3] mmc: dt-bindings: update Mediatek MMC bindings

+devicetree, Rob

On 19 January 2017 at 11:19, Yong Mao <yong.mao@...iatek.com> wrote:
> From: yong mao <yong.mao@...iatek.com>
>
> Add description for mtk-hs200-cmd-int-delay
> Add description for mtk-hs400-cmd-int-delay
> Add description for mtk-hs400-cmd-resp-sel
>
> Signed-off-by: Yong Mao <yong.mao@...iatek.com>
> ---
>  Documentation/devicetree/bindings/mmc/mtk-sd.txt |    9 +++++++++
>  1 file changed, 9 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/mmc/mtk-sd.txt b/Documentation/devicetree/bindings/mmc/mtk-sd.txt
> index 0120c7f..149f472 100644
> --- a/Documentation/devicetree/bindings/mmc/mtk-sd.txt
> +++ b/Documentation/devicetree/bindings/mmc/mtk-sd.txt
> @@ -21,6 +21,12 @@ Optional properties:
>  - assigned-clocks: PLL of the source clock
>  - assigned-clock-parents: parent of source clock, used for HS400 mode to get 400Mhz source clock
>  - hs400-ds-delay: HS400 DS delay setting
> +- mtk-hs200-cmd-int-delay: HS200 command internal delay setting.
> +                          The value is an integer from 0 to 31

Please change to:

mediatek,hs200-cmd-delay

... and if there is a unit, like ns or us, please add that a suffix.

> +- mtk-hs400-cmd-int-delay: HS400 command internal delay setting
> +                          The value is an integer from 0 to 31

mediatek,hs400-cmd-delay and add unit if applicable.

> +- mtk-hs400-cmd-resp-sel:  HS400 command response sample selection
> +                          The value is an integer from 0 to 1

mediatek,hs400-cmd-resp-sel

And make it a boolean value instead!

>
>  Examples:
>  mmc0: mmc@...30000 {
> @@ -38,4 +44,7 @@ mmc0: mmc@...30000 {
>         assigned-clocks = <&topckgen CLK_TOP_MSDC50_0_SEL>;
>         assigned-clock-parents = <&topckgen CLK_TOP_MSDCPLL_D2>;
>         hs400-ds-delay = <0x14015>;
> +       mtk-hs200-cmd-int-delay = <26>;
> +       mtk-hs400-cmd-int-delay = <14>;
> +       mtk-hs400-cmd-resp-sel = <0>; /* 0: rising, 1: falling */

The rising/falling information belongs in description of the binding a
few lines above. Please move it there.

>  };
> --
> 1.7.9.5
>

Kind regards
Uffe