diff mbox series

[v1,1/2] drm/msm/dp: reset DP controller before transmit phy test pattern

Message ID 1650924663-24892-2-git-send-email-quic_khsieh@quicinc.com
State Superseded
Headers show
Series fix DP phy compliance test | expand

Commit Message

Kuogee Hsieh April 25, 2022, 10:11 p.m. UTC
DP controller state can not switch from video ready state to
transmit phy pattern state at run time. DP mainlink has to be
teared down followed by reset controller to default state to have
DP controller switch to transmit phy test pattern state and start
generate specified phy test pattern to sinker once main link setup
again.

Fixes: ee35444be0c8 ("drm/msm/dp: use dp_ctrl_off_link_stream during PHY compliance test run")
Signed-off-by: Kuogee Hsieh <quic_khsieh@quicinc.com>
---
 drivers/gpu/drm/msm/dp/dp_ctrl.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Stephen Boyd April 25, 2022, 11:36 p.m. UTC | #1
Quoting Kuogee Hsieh (2022-04-25 15:11:02)
> DP controller state can not switch from video ready state to
> transmit phy pattern state at run time. DP mainlink has to be
> teared down followed by reset controller to default state to have
> DP controller switch to transmit phy test pattern state and start
> generate specified phy test pattern to sinker once main link setup
> again.
>
> Fixes: ee35444be0c8 ("drm/msm/dp: use dp_ctrl_off_link_stream during PHY compliance test run")

What commit is this? I think it's supposed to be

Fixes: 52352fe2f866 ("drm/msm/dp: use dp_ctrl_off_link_stream during
PHY compliance test run")

> Signed-off-by: Kuogee Hsieh <quic_khsieh@quicinc.com>
> ---

Otherwise,

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

Patch

diff --git a/drivers/gpu/drm/msm/dp/dp_ctrl.c b/drivers/gpu/drm/msm/dp/dp_ctrl.c
index 5356856..193cc1a 100644
--- a/drivers/gpu/drm/msm/dp/dp_ctrl.c
+++ b/drivers/gpu/drm/msm/dp/dp_ctrl.c
@@ -1532,7 +1532,7 @@  static int dp_ctrl_process_phy_test_request(struct dp_ctrl_private *ctrl)
 	 * running. Add the global reset just before disabling the
 	 * link clocks and core clocks.
 	 */
-	ret = dp_ctrl_off_link_stream(&ctrl->dp_ctrl);
+	ret = dp_ctrl_off(&ctrl->dp_ctrl);
 	if (ret) {
 		DRM_ERROR("failed to disable DP controller\n");
 		return ret;