* [PATCH] drm/msm/dp: Initialize the INTF_CONFIG register
@ 2021-07-22 2:44 Bjorn Andersson
2021-07-22 20:16 ` Stephen Boyd
0 siblings, 1 reply; 2+ messages in thread
From: Bjorn Andersson @ 2021-07-22 2:44 UTC (permalink / raw)
To: Rob Clark, Sean Paul, David Airlie, Daniel Vetter, Kuogee Hsieh
Cc: Stephen Boyd, Abhinav Kumar, Tanmay Shah, Chandan Uddaraju,
Guenter Roeck, Vara Reddy, linux-arm-msm, dri-devel, freedreno,
linux-kernel
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(+)
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;
}
--
2.29.2
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] drm/msm/dp: Initialize the INTF_CONFIG register
2021-07-22 2:44 [PATCH] drm/msm/dp: Initialize the INTF_CONFIG register Bjorn Andersson
@ 2021-07-22 20:16 ` Stephen Boyd
0 siblings, 0 replies; 2+ messages in thread
From: Stephen Boyd @ 2021-07-22 20:16 UTC (permalink / raw)
To: Bjorn Andersson, Daniel Vetter, David Airlie, Kuogee Hsieh,
Rob Clark, Sean Paul
Cc: Abhinav Kumar, Tanmay Shah, Chandan Uddaraju, Guenter Roeck,
Vara Reddy, linux-arm-msm, dri-devel, freedreno, linux-kernel
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>
^ permalink raw reply [flat|nested] 2+ messages in thread
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