diff mbox series

drm/msm/dp: Initialize the INTF_CONFIG register

Message ID 20210722024434.3313167-1-bjorn.andersson@linaro.org (mailing list archive)
State Not Applicable
Headers show
Series drm/msm/dp: Initialize the INTF_CONFIG register | expand

Commit Message

Bjorn Andersson July 22, 2021, 2:44 a.m. UTC 
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@linaro.org>
---
 drivers/gpu/drm/msm/dp/dp_catalog.c | 1 +
 1 file changed, 1 insertion(+)

Comments

Stephen Boyd July 22, 2021, 8:16 p.m. UTC | #1 
Quoting Bjorn Andersson (2021-07-21 19:44:34)
> 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@linaro.org>
> ---

Reviewed-by: Stephen Boyd <swboyd@chromium.org>
diff mbox series

Patch

diff --git a/drivers/gpu/drm/msm/dp/dp_catalog.c b/drivers/gpu/drm/msm/dp/dp_catalog.c
index 23458b0ddc37..37cb1102a0ca 100644
--- a/drivers/gpu/drm/msm/dp/dp_catalog.c
+++ b/drivers/gpu/drm/msm/dp/dp_catalog.c
@@ -747,6 +747,7 @@  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;
 }