vc4/drm: Remove the clear of SCALER_DISPBKGND_FILL
Since "drm/vc4: hvs: Support BCM2712 HVS" booting Pi4 with dual 4kp30 displays connected fails with: vc4-drm gpu: [drm] *ERROR* [CRTC:107:pixelvalve-4] flip_done timed out It has been tracked down to the referenced commit adding a path to clear the SCALER_DISPBKGND_FILL when not required. Dual 4kp30 works with a core clock of 297MHz when background fill is enabled, but requires a higher value with it disabled. 320MHz still fails, while 330MHz seems okay. Lets always enable background fill for Pi0-4. Fixes: e84da235 ("drm/vc4: hvs: Support BCM2712 HVS") Signed-off-by:Dom Cobley <popcornmix@gmail.com>
parent
97f8a0ed
Please register or sign in to comment