diff mbox series

[v2,4/4] drm/sun4i: Update mixer's internal registers after initialization

Message ID 20191229162828.3326-4-roman.stratiienko@globallogic.com (mailing list archive)
State New, archived
Headers show
Series [v2,1/4] drm/sun4i: Reimplement plane z position setting logic | expand

Commit Message

Roman Stratiienko Dec. 29, 2019, 4:28 p.m. UTC 
From: Roman Stratiienko <roman.stratiienko@globallogic.com>

At system start blink of u-boot ghost framebuffer can be observed.
Fix it.

Fixes: 9d75b8c0b999 ("drm/sun4i: add support for Allwinner DE2 mixers")
Signed-off-by: Roman Stratiienko <roman.stratiienko@globallogic.com>
Reviewed-by: Jernej Skrabec <jernej.skrabec@siol.net>
---
v2:
- Picked 'Reviewed-by' line
- Added 'Fixes' line
---
 drivers/gpu/drm/sun4i/sun8i_mixer.c | 3 +++
 1 file changed, 3 insertions(+)
diff mbox series

Patch

diff --git a/drivers/gpu/drm/sun4i/sun8i_mixer.c b/drivers/gpu/drm/sun4i/sun8i_mixer.c
index 5d90a95ff855..86711d8a9c84 100644
--- a/drivers/gpu/drm/sun4i/sun8i_mixer.c
+++ b/drivers/gpu/drm/sun4i/sun8i_mixer.c
@@ -576,6 +576,9 @@  static int sun8i_mixer_bind(struct device *dev, struct device *master,
 	regmap_update_bits(mixer->engine.regs, SUN8I_MIXER_BLEND_PIPE_CTL(base),
 			   SUN8I_MIXER_BLEND_PIPE_CTL_EN_MSK, 0);
 
+	regmap_write(mixer->engine.regs, SUN8I_MIXER_GLOBAL_DBUFF,
+		     SUN8I_MIXER_GLOBAL_DBUFF_ENABLE);
+
 	return 0;
 
 err_disable_bus_clk: