From: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx>
[ Upstream commit f9a39932fa54b6421e751ada7a285da809146421 ]
Some bootloaders set the widebus enable bit in the INTF_CONFIG register,
but configuration of widebus isn't yet supported ensure that the
register has a known value, with widebus disabled.
Fixes: c943b4948b58 ("drm/msm/dp: add displayPort driver support")
Signed-off-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx>
Reviewed-by: Stephen Boyd <swboyd@xxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20210722024434.3313167-1-bjorn.andersson@xxxxxxxxxx
Signed-off-by: Rob Clark <robdclark@xxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/gpu/drm/msm/dp/dp_catalog.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/gpu/drm/msm/dp/dp_catalog.c b/drivers/gpu/drm/msm/dp/dp_catalog.c
index f4f53f23e331..146a223a997a 100644
--- a/drivers/gpu/drm/msm/dp/dp_catalog.c
+++ b/drivers/gpu/drm/msm/dp/dp_catalog.c
@@ -762,6 +762,7 @@ int dp_catalog_panel_timing_cfg(struct dp_catalog *dp_catalog)
dp_write_link(catalog, REG_DP_HSYNC_VSYNC_WIDTH_POLARITY,
dp_catalog->width_blanking);
dp_write_link(catalog, REG_DP_ACTIVE_HOR_VER, dp_catalog->dp_active);
+ dp_write_p0(catalog, MMSS_DP_INTF_CONFIG, 0);
return 0;
}
--
2.30.2
