| From 3243fe42fe87da66708c71559a91641af70c1e63 Mon Sep 17 00:00:00 2001 |
| From: Sasha Levin <sashal@kernel.org> |
| Date: Wed, 21 Jul 2021 19:44:34 -0700 |
| Subject: drm/msm/dp: Initialize the INTF_CONFIG register |
| |
| From: Bjorn Andersson <bjorn.andersson@linaro.org> |
| |
| [ 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@linaro.org> |
| Reviewed-by: Stephen Boyd <swboyd@chromium.org> |
| Link: https://lore.kernel.org/r/20210722024434.3313167-1-bjorn.andersson@linaro.org |
| Signed-off-by: Rob Clark <robdclark@chromium.org> |
| Signed-off-by: Sasha Levin <sashal@kernel.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 4963bfe6a472..aeca8b2ac5c6 100644 |
| --- a/drivers/gpu/drm/msm/dp/dp_catalog.c |
| +++ b/drivers/gpu/drm/msm/dp/dp_catalog.c |
| @@ -740,6 +740,7 @@ 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 |
| |
