There is no need to explicitly initiate a register transfer and turn off the DCU after initializing the plane registers. In fact, this is harmful and leads to unnecessary flickers if the DCU has been left on by the bootloader.
Signed-off-by: Stefan Agner stefan@agner.ch --- drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_plane.c | 5 ----- 1 file changed, 5 deletions(-)
diff --git a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_plane.c b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_plane.c index a7e5486..9e6f7d8 100644 --- a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_plane.c +++ b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_plane.c @@ -211,11 +211,6 @@ void fsl_dcu_drm_init_planes(struct drm_device *dev) for (j = 1; j <= fsl_dev->soc->layer_regs; j++) regmap_write(fsl_dev->regmap, DCU_CTRLDESCLN(i, j), 0); } - regmap_update_bits(fsl_dev->regmap, DCU_DCU_MODE, - DCU_MODE_DCU_MODE_MASK, - DCU_MODE_DCU_MODE(DCU_MODE_OFF)); - regmap_write(fsl_dev->regmap, DCU_UPDATE_MODE, - DCU_UPDATE_MODE_READREG); }
struct drm_plane *fsl_dcu_drm_primary_create_plane(struct drm_device *dev)