linux-kernel - Re: [PATCH v1] drm/bridge: lt8912b: Fix DSI Video Mode

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Message-ID: <CAN6tsi6DB4wsxAriDWimRE2-FW80LMOsX9DDkNQdifYFCUMjGg@mail.gmail.com>
Date:   Thu, 30 Mar 2023 11:40:11 +0200
From:   Robert Foss <rfoss@...nel.org>
To:     Francesco Dolcini <francesco@...cini.it>
Cc:     Adrien Grassein <adrien.grassein@...il.com>,
        Andrzej Hajda <andrzej.hajda@...el.com>,
        Neil Armstrong <neil.armstrong@...aro.org>,
        Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
        Jonas Karlman <jonas@...boo.se>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        dri-devel@...ts.freedesktop.org,
        Francesco Dolcini <francesco.dolcini@...adex.com>,
        linux-kernel@...r.kernel.org, stable@...r.kernel.org
Subject: Re: [PATCH v1] drm/bridge: lt8912b: Fix DSI Video Mode

On Thu, Mar 30, 2023 at 11:31 AM Francesco Dolcini <francesco@...cini.it> wrote:
>
> From: Francesco Dolcini <francesco.dolcini@...adex.com>
>
> LT8912 DSI port supports only Non-Burst mode video operation with Sync
> Events and continuous clock on clock lane, correct dsi mode flags
> according to that removing MIPI_DSI_MODE_VIDEO_BURST flag.
>
> Cc: <stable@...r.kernel.org>
> Fixes: 30e2ae943c26 ("drm/bridge: Introduce LT8912B DSI to HDMI bridge")
> Signed-off-by: Francesco Dolcini <francesco.dolcini@...adex.com>
> ---
>  drivers/gpu/drm/bridge/lontium-lt8912b.c | 1 -
>  1 file changed, 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/bridge/lontium-lt8912b.c b/drivers/gpu/drm/bridge/lontium-lt8912b.c
> index b40baced1331..13c131ade268 100644
> --- a/drivers/gpu/drm/bridge/lontium-lt8912b.c
> +++ b/drivers/gpu/drm/bridge/lontium-lt8912b.c
> @@ -504,7 +504,6 @@ static int lt8912_attach_dsi(struct lt8912 *lt)
>         dsi->format = MIPI_DSI_FMT_RGB888;
>
>         dsi->mode_flags = MIPI_DSI_MODE_VIDEO |
> -                         MIPI_DSI_MODE_VIDEO_BURST |
>                           MIPI_DSI_MODE_LPM |
>                           MIPI_DSI_MODE_NO_EOT_PACKET;
>
> --
> 2.25.1
>

Letting this sleep for a few days before applying.

Reviewed-by: Robert Foss <rfoss@...nel.org>