Re: [PATCH] drm/bridge-connector: Prioritize supported_formats over ycbcr_420_allowed

[Cristian Ciocaltea]

On 11/30/24 1:13 AM, Cristian Ciocaltea wrote:
> Bridges having the DRM_BRIDGE_OP_HDMI flag set in drm_bridge->ops are
> supposed to rely on drm_bridge->supported_formats bitmask to advertise
> the supported colorspaces, including HDMI_COLORSPACE_YUV420.  Therefore,
> the newly introduced drm_bridge->ycbcr_420_allowed flag becomes
> redundant in this particular context.
> 
> Moreover, when drm_bridge_connector gets initialised, only
> drm_bridge->ycbcr_420_allowed is considered in the process of adjusting
> the equivalent property of the base drm_connector, which effectively
> discards the formats advertised by the HDMI bridge.
> 
> Handle the inconsistency by ignoring ycbcr_420_allowed for HDMI bridges
> and, instead, make use of the supported_formats bitmask when setting up
> the bridge connector.
> 
> Fixes: 3ced1c687512 ("drm/display: bridge_connector: handle ycbcr_420_allowed")

Please ignore this and check v2 instead:

https://lore.kernel.org/all/20241206-bridge-conn-fmt-prio-v2-1-85c817529b88@xxxxxxxxxxxxx/