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From:   Adrien Grassein <adrien.grassein@gmail.com>
Date:   Thu, 22 Sep 2022 20:25:54 +0200
Message-ID: <CABkfQAFLAMtj2yV3tCrjcVN70K2F4y4R31mHqm49oeoPcs3KHQ@mail.gmail.com>
Subject: Re: [PATCH 2/4] drm/bridge: lt8912b: set hdmi or dvi mode
To:     Philippe Schenker <dev@pschenker.ch>
Cc:     dri-devel <dri-devel@lists.freedesktop.org>,
        Jernej Skrabec <jernej.skrabec@gmail.com>,
        Jonas Karlman <jonas@kwiboo.se>,
        Robert Foss <robert.foss@linaro.org>,
        linux-kernel <linux-kernel@vger.kernel.org>,
        Daniel Vetter <daniel@ffwll.ch>,
        Neil Armstrong <neil.armstrong@linaro.org>,
        Laurent Pinchart <Laurent.pinchart@ideasonboard.com>,
        Andrzej Hajda <andrzej.hajda@intel.com>,
        David Airlie <airlied@linux.ie>,
        Philippe Schenker <philippe.schenker@toradex.com>
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Le jeu. 22 sept. 2022 =C3=A0 14:43, Philippe Schenker <dev@pschenker.ch> a =
=C3=A9crit :
>
> From: Philippe Schenker <philippe.schenker@toradex.com>
>
> The Lontium LT8912 does have a setting for DVI or HDMI. This patch reads
> from EDID what the display needs and sets it accordingly.
>
> Fixes: 30e2ae943c26 ("drm/bridge: Introduce LT8912B DSI to HDMI bridge")
> Signed-off-by: Philippe Schenker <philippe.schenker@toradex.com>
Acked-by: Adrien Grassein <adrien.grassein@gmail.com>
> ---
>
>  drivers/gpu/drm/bridge/lontium-lt8912b.c | 2 ++
>  1 file changed, 2 insertions(+)
>
> diff --git a/drivers/gpu/drm/bridge/lontium-lt8912b.c b/drivers/gpu/drm/b=
ridge/lontium-lt8912b.c
> index 0fd3472e767c..6a4bb7422176 100644
> --- a/drivers/gpu/drm/bridge/lontium-lt8912b.c
> +++ b/drivers/gpu/drm/bridge/lontium-lt8912b.c
> @@ -323,6 +323,8 @@ static int lt8912_video_setup(struct lt8912 *lt)
>                                   vsync_activehigh ? BIT(0) : 0);
>         ret |=3D regmap_update_bits(lt->regmap[I2C_MAIN], 0xab, BIT(1),
>                                   hsync_activehigh ? BIT(1) : 0);
> +       ret |=3D regmap_update_bits(lt->regmap[I2C_MAIN], 0xb2, BIT(0),
> +                                 lt->connector.display_info.is_hdmi ? BI=
T(0) : 0);
>
>         return ret;
>  }
> --
> 2.37.3
>