Re: [PATCH v5 1/3] drm/msm/dp: cleared DP_DOWNSPREAD_CTRL register before start link training

2022-09-29 Thread Abhinav Kumar
On 9/12/2022 12:25 PM, Dmitry Baryshkov wrote: On 12/09/2022 22:21, Kuogee Hsieh wrote: On 9/12/2022 11:39 AM, Dmitry Baryshkov wrote: On 12/09/2022 19:23, Kuogee Hsieh wrote: DOWNSPREAD_CTRL (0x107) shall be cleared to 0 upon power-on reset or an upstream device disconnect. This patch wil

Re: [PATCH v5 1/3] drm/msm/dp: cleared DP_DOWNSPREAD_CTRL register before start link training

2022-09-12 Thread Dmitry Baryshkov
On 12/09/2022 22:21, Kuogee Hsieh wrote: On 9/12/2022 11:39 AM, Dmitry Baryshkov wrote: On 12/09/2022 19:23, Kuogee Hsieh wrote: DOWNSPREAD_CTRL (0x107) shall be cleared to 0 upon power-on reset or an upstream device disconnect. This patch will enforce this rule by always cleared DOWNSPREAD_CT

Re: [PATCH v5 1/3] drm/msm/dp: cleared DP_DOWNSPREAD_CTRL register before start link training

2022-09-12 Thread Kuogee Hsieh
On 9/12/2022 11:39 AM, Dmitry Baryshkov wrote: On 12/09/2022 19:23, Kuogee Hsieh wrote: DOWNSPREAD_CTRL (0x107) shall be cleared to 0 upon power-on reset or an upstream device disconnect. This patch will enforce this rule by always cleared DOWNSPREAD_CTRL register to 0 before start link traini

Re: [PATCH v5 1/3] drm/msm/dp: cleared DP_DOWNSPREAD_CTRL register before start link training

2022-09-12 Thread Dmitry Baryshkov
On 12/09/2022 19:23, Kuogee Hsieh wrote: DOWNSPREAD_CTRL (0x107) shall be cleared to 0 upon power-on reset or an upstream device disconnect. This patch will enforce this rule by always cleared DOWNSPREAD_CTRL register to 0 before start link training. At rare case that DP MSA timing parameters may

[PATCH v5 1/3] drm/msm/dp: cleared DP_DOWNSPREAD_CTRL register before start link training

2022-09-12 Thread Kuogee Hsieh
DOWNSPREAD_CTRL (0x107) shall be cleared to 0 upon power-on reset or an upstream device disconnect. This patch will enforce this rule by always cleared DOWNSPREAD_CTRL register to 0 before start link training. At rare case that DP MSA timing parameters may be mis-interpreted by the sink which cause