diff mbox series

[v2,1/2] drm/sun4i: tcon: fix inverted DCLK polarity

Message ID 20210107023032.560182-2-giulio.benetti@benettiengineering.com (mailing list archive)
State Superseded
Headers show
Series drm/sun4i: fix DCLK and improve its handling | expand

Commit Message

Giulio Benetti Jan. 7, 2021, 2:30 a.m. UTC 
From: Giulio Benetti <giulio.benetti@micronovasrl.com>

During commit 88bc4178568b ("drm: Use new
DRM_BUS_FLAG_*_(DRIVE|SAMPLE)_(POS|NEG)EDGE flags") DRM_BUS_FLAG_*
macros have been changed to avoid ambiguity but just because of this
ambiguity previous DRM_BUS_FLAG_PIXDATA_(POS/NEG)EDGE were used meaning
_SAMPLE_ not _DRIVE_. This lead to DLCK inversion, so let's swap DCLK
phase to fix it.

Fixes: 88bc4178568b ("drm: Use new DRM_BUS_FLAG_*_(DRIVE|SAMPLE)_(POS|NEG)EDGE flags")
Signed-off-by: Giulio Benetti <giulio.benetti@micronovasrl.com>
---
V1->V2:
use Fixes: tag in commit log as suggested by Jernej
---
 drivers/gpu/drm/sun4i/sun4i_tcon.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/drivers/gpu/drm/sun4i/sun4i_tcon.c b/drivers/gpu/drm/sun4i/sun4i_tcon.c
index eaaf5d70e352..52598bb0fb0b 100644
--- a/drivers/gpu/drm/sun4i/sun4i_tcon.c
+++ b/drivers/gpu/drm/sun4i/sun4i_tcon.c
@@ -585,10 +585,10 @@  static void sun4i_tcon0_mode_set_rgb(struct sun4i_tcon *tcon,
 	 * and DOTCLOCK drivers.
 	 */
 	if (info->bus_flags & DRM_BUS_FLAG_PIXDATA_DRIVE_POSEDGE)
-		clk_set_phase(tcon->dclk, 240);
+		clk_set_phase(tcon->dclk, 0);
 
 	if (info->bus_flags & DRM_BUS_FLAG_PIXDATA_DRIVE_NEGEDGE)
-		clk_set_phase(tcon->dclk, 0);
+		clk_set_phase(tcon->dclk, 240);
 
 	regmap_update_bits(tcon->regs, SUN4I_TCON0_IO_POL_REG,
 			   SUN4I_TCON0_IO_POL_HSYNC_POSITIVE |