linux-kernel - Re: [PATCH v6 1/4] dt-bindings: display: mediatek: add property to control mipi tx drive current

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Message-ID: <CAAOTY_9YThRHNqv-D7o-XrgqQ6CnH0tvmPCHppDpzmiiT0KEGg@mail.gmail.com>
Date:   Sun, 19 Apr 2020 09:32:55 +0800
From:   Chun-Kuang Hu <chunkuang.hu@...nel.org>
To:     Jitao Shi <jitao.shi@...iatek.com>,
        Rob Herring <robh+dt@...nel.org>
Cc:     Mark Rutland <mark.rutland@....com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        David Airlie <airlied@...ux.ie>,
        DRI Development <dri-devel@...ts.freedesktop.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        "moderated list:ARM/Mediatek SoC support" 
        <linux-mediatek@...ts.infradead.org>, devicetree@...r.kernel.org,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        srv_heupstream <srv_heupstream@...iatek.com>,
        yingjoe.chen@...iatek.com, eddie.huang@...iatek.com,
        cawa.cheng@...iatek.com, Bibby Hsieh <bibby.hsieh@...iatek.com>,
        CK Hu <ck.hu@...iatek.com>, stonea168@....com,
        huijuan.xie@...iatek.com, Chun-Kuang Hu <chunkuang.hu@...nel.org>
Subject: Re: [PATCH v6 1/4] dt-bindings: display: mediatek: add property to
 control mipi tx drive current

Hi, Rob:

How do you think about this patch? This patch looks good to me.

Regards,
Chun-Kuang.

Jitao Shi <jitao.shi@...iatek.com> 於 2020年4月11日 週六 下午3:44寫道：
>
> Add a property to control mipi tx drive current:
> "drive-strength-microamp"
>
> Reviewed-by: Chun-Kuang Hu <chunkuang.hu@...nel.org>
> Signed-off-by: Jitao Shi <jitao.shi@...iatek.com>
> ---
>  .../devicetree/bindings/display/mediatek/mediatek,dsi.txt    | 5 +++++
>  1 file changed, 5 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/display/mediatek/mediatek,dsi.txt b/Documentation/devicetree/bindings/display/mediatek/mediatek,dsi.txt
> index a19a6cc375ed..d78b6d6d8fab 100644
> --- a/Documentation/devicetree/bindings/display/mediatek/mediatek,dsi.txt
> +++ b/Documentation/devicetree/bindings/display/mediatek/mediatek,dsi.txt
> @@ -33,6 +33,10 @@ Required properties:
>  - #clock-cells: must be <0>;
>  - #phy-cells: must be <0>.
>
> +Optional properties:
> +- drive-strength-microamp: adjust driving current, should be 3000 ~ 6000. And
> +                                                  the step is 200.
> +
>  Example:
>
>  mipi_tx0: mipi-dphy@...15000 {
> @@ -42,6 +46,7 @@ mipi_tx0: mipi-dphy@...15000 {
>         clock-output-names = "mipi_tx0_pll";
>         #clock-cells = <0>;
>         #phy-cells = <0>;
> +       drive-strength-microamp = <4600>;
>  };
>
>  dsi0: dsi@...1b000 {
> --
> 2.21.0