[PATCH v2 04/13] drm/bridge: lt9611: fix programming of video modes

Neil Armstrong neil.armstrong at linaro.org
Thu Jan 12 09:27:05 UTC 2023


On 08/01/2023 17:56, Dmitry Baryshkov wrote:
> Program the upper part of the hfront_porch into the proper register.
> 
> Fixes: 23278bf54afe ("drm/bridge: Introduce LT9611 DSI to HDMI bridge")
> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov at linaro.org>
> ---
>   drivers/gpu/drm/bridge/lontium-lt9611.c | 3 ++-
>   1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/bridge/lontium-lt9611.c b/drivers/gpu/drm/bridge/lontium-lt9611.c
> index deb503ca956a..f377052a45a4 100644
> --- a/drivers/gpu/drm/bridge/lontium-lt9611.c
> +++ b/drivers/gpu/drm/bridge/lontium-lt9611.c
> @@ -187,7 +187,8 @@ static void lt9611_mipi_video_setup(struct lt9611 *lt9611,
>   
>   	regmap_write(lt9611->regmap, 0x8319, (u8)(hfront_porch % 256));
>   
> -	regmap_write(lt9611->regmap, 0x831a, (u8)(hsync_porch / 256));
> +	regmap_write(lt9611->regmap, 0x831a, (u8)(hsync_porch / 256) |
> +						((hfront_porch / 256) << 4));
>   	regmap_write(lt9611->regmap, 0x831b, (u8)(hsync_porch % 256));
>   }
>   

Reviewed-by: Neil Armstrong <neil.armstrong at linaro.org>


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