Hi Boris,

Thank you for the patch.

On Wed, Oct 23, 2019 at 05:45:09PM +0200, Boris Brezillon wrote:
> So that the previous bridge element in the chain knows which input
> format the panel bridge expects.
> 
> Signed-off-by: Boris Brezillon <boris.brezil...@collabora.com>
> ---
> Changes in v3:
> * Adjust things to match the new bus-format negotiation approach
> * Use drm_atomic_helper_bridge_propagate_bus_fmt
> * Don't implement ->atomic_check() (the core now takes care of bus
>   flags propagation)
> 
> Changes in v2:
> * Adjust things to match the new bus-format negotiation approach
> ---
>  drivers/gpu/drm/bridge/panel.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/gpu/drm/bridge/panel.c b/drivers/gpu/drm/bridge/panel.c
> index f4e293e7cf64..a70c363a2bd0 100644
> --- a/drivers/gpu/drm/bridge/panel.c
> +++ b/drivers/gpu/drm/bridge/panel.c
> @@ -127,6 +127,7 @@ static const struct drm_bridge_funcs 
> panel_bridge_bridge_funcs = {
>       .enable = panel_bridge_enable,
>       .disable = panel_bridge_disable,
>       .post_disable = panel_bridge_post_disable,
> +     .atomic_get_input_bus_fmts = drm_atomic_helper_bridge_propagate_bus_fmt,

Shouldn't the format be retrieved from the panel instead of from the
connector ? We're moving towards removing connector creation from
bridges, so I think it would be more future-proof.

>  };
>  
>  /**

-- 
Regards,

Laurent Pinchart
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