Re: [PATCH v3 3/3] drm/msm/dp: check main link status before start aux read

2021-04-21 Thread khsieh
On 2021-04-20 16:38, Stephen Boyd wrote: Quoting Kuogee Hsieh (2021-04-16 10:38:51) Maybe when the cable is disconnected the DP phy should be shutdown and some bit in the phy could effectively "cut off" the aux channel and then NAKs would start coming through here in the DP controller I/O regi

Re: [PATCH v3 3/3] drm/msm/dp: check main link status before start aux read

2021-04-20 Thread Stephen Boyd
Quoting Kuogee Hsieh (2021-04-16 10:38:51) > Maybe when the cable is disconnected the DP phy should be shutdown and > some bit in the phy could effectively "cut off" the aux channel and then > NAKs would start coming through here in the DP controller I/O register > space. This patch have DP aux cha

[PATCH v3 3/3] drm/msm/dp: check main link status before start aux read

2021-04-16 Thread Kuogee Hsieh
Maybe when the cable is disconnected the DP phy should be shutdown and some bit in the phy could effectively "cut off" the aux channel and then NAKs would start coming through here in the DP controller I/O register space. This patch have DP aux channel read/write to return NAK immediately if DP con

[PATCH v3 3/3] drm/msm/dp: check main link status before start aux read

2021-04-15 Thread Kuogee Hsieh
Maybe when the cable is disconnected the DP phy should be shutdown and some bit in the phy could effectively "cut off" the aux channel and then NAKs would start coming through here in the DP controller I/O register space. This patch have DP aux channel read/write to return NAK immediately if DP con