linux-kernel - Re: [PATCH v3 5/5] gpu/drm: mediatek: hdmi: add MT8167 configuration

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Message-ID: <CAAOTY_9PyKK4+gqiU4aP48fB-y34EdW7RULBxOfU2KU+V1toXw@mail.gmail.com>
Date:   Sat, 24 Apr 2021 08:25:36 +0800
From:   Chun-Kuang Hu <chunkuang.hu@...nel.org>
To:     Neil Armstrong <narmstrong@...libre.com>
Cc:     Chun-Kuang Hu <chunkuang.hu@...nel.org>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Matthias Brugger <matthias.bgg@...il.com>,
        DRI Development <dri-devel@...ts.freedesktop.org>,
        "moderated list:ARM/Mediatek SoC support" 
        <linux-mediatek@...ts.infradead.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Fabien Parent <fparent@...libre.com>
Subject: Re: [PATCH v3 5/5] gpu/drm: mediatek: hdmi: add MT8167 configuration

Hi, Neil:

Neil Armstrong <narmstrong@...libre.com> 於 2021年4月19日 週一 下午3:33寫道：
>
> The MT8167 SoC have a hard limit on the maximal supported HDMI TMDS clock,
> and is not validated and supported for HDMI modes out of HDMI CEA modes,
> so add a configuration entry linked to the MT8167 compatible.

Reviewed-by: Chun-Kuang Hu <chunkuang.hu@...nel.org>

>
> Signed-off-by: Fabien Parent <fparent@...libre.com>
> Signed-off-by: Neil Armstrong <narmstrong@...libre.com>
> ---
>  drivers/gpu/drm/mediatek/mtk_hdmi.c | 8 ++++++++
>  1 file changed, 8 insertions(+)
>
> diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi.c b/drivers/gpu/drm/mediatek/mtk_hdmi.c
> index bc50d97f2553..c1651a83700d 100644
> --- a/drivers/gpu/drm/mediatek/mtk_hdmi.c
> +++ b/drivers/gpu/drm/mediatek/mtk_hdmi.c
> @@ -1787,10 +1787,18 @@ static const struct mtk_hdmi_conf mtk_hdmi_conf_mt2701 = {
>         .tz_disabled = true,
>  };
>
> +static const struct mtk_hdmi_conf mtk_hdmi_conf_mt8167 = {
> +       .max_mode_clock = 148500,
> +       .cea_modes_only = true,
> +};
> +
>  static const struct of_device_id mtk_drm_hdmi_of_ids[] = {
>         { .compatible = "mediatek,mt2701-hdmi",
>           .data = &mtk_hdmi_conf_mt2701,
>         },
> +       { .compatible = "mediatek,mt8167-hdmi",
> +         .data = &mtk_hdmi_conf_mt8167,
> +       },
>         { .compatible = "mediatek,mt8173-hdmi",
>         },
>         {}
> --
> 2.25.1
>