From: Pantelis Antoniou <panto@xxxxxxxxxxxxxxxxxxxxxxx>
Bits weren't cleared so resolution changes didn't work.
Signed-off-by: Pantelis Antoniou <panto@xxxxxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Darren Etheridge <detheridge@xxxxxx>
---
drivers/gpu/drm/tilcdc/tilcdc_crtc.c | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/drivers/gpu/drm/tilcdc/tilcdc_crtc.c b/drivers/gpu/drm/tilcdc/tilcdc_crtc.c
index 6118651..eb06f70 100644
--- a/drivers/gpu/drm/tilcdc/tilcdc_crtc.c
+++ b/drivers/gpu/drm/tilcdc/tilcdc_crtc.c
@@ -299,6 +299,8 @@ static int tilcdc_crtc_mode_set(struct drm_crtc *crtc,
* a value of 0 as 1
*/
if (priv->rev == 2) {
+ /* clear bits we're going to set */
+ reg &= ~0x78000033;
reg |= ((hfp-1) & 0x300) >> 8;
reg |= ((hbp-1) & 0x300) >> 4;
reg |= ((hsw-1) & 0x3c0) << 21;
--
1.7.0.4
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