[PATCH 1/1] drm/bridge: ti-sn65dsi83: Support negative DE polarity

[Herve Codina]

Hi Alexander,

On Tue, 25 Feb 2025 14:51:13 +0100
Alexander Stein <alexander.stein at ew.tq-group.com> wrote:

> Polarity for DE is stored in bridge state. Use this flag for setting
> the DE polarity in the bridge.
> 
> Signed-off-by: Alexander Stein <alexander.stein at ew.tq-group.com>
> ---
>  drivers/gpu/drm/bridge/ti-sn65dsi83.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/gpu/drm/bridge/ti-sn65dsi83.c b/drivers/gpu/drm/bridge/ti-sn65dsi83.c
> index 54ad462d17ef7..95563aa1b450d 100644
> --- a/drivers/gpu/drm/bridge/ti-sn65dsi83.c
> +++ b/drivers/gpu/drm/bridge/ti-sn65dsi83.c
> @@ -561,6 +561,8 @@ static void sn65dsi83_atomic_pre_enable(struct drm_bridge *bridge,
>  	       REG_LVDS_FMT_HS_NEG_POLARITY : 0) |
>  	      (mode->flags & DRM_MODE_FLAG_NVSYNC ?
>  	       REG_LVDS_FMT_VS_NEG_POLARITY : 0);
> +	val |= bridge_state->output_bus_cfg.flags & DRM_BUS_FLAG_DE_LOW ?
> +	       REG_LVDS_FMT_DE_NEG_POLARITY : 0;
>  
>  	/* Set up bits-per-pixel, 18bpp or 24bpp. */
>  	if (lvds_format_24bpp) {

Tested without regression on my system.

Tested-by: Herve Codina <herve.codina at bootlin.com>

Best regards,
Hervé