Re: [Intel-gfx] [PATCH 1/2] drm/dp: add helpers to read link training delays

2021-10-14 Thread Jani Nikula
On Thu, 14 Oct 2021, Ville Syrjälä wrote: > On Tue, Oct 12, 2021 at 05:43:20PM +0300, Jani Nikula wrote: >> The link training delays are different and/or available in different >> DPCD offsets depending on: >> >> - Clock recovery vs. channel equalization >> - DPRX vs. LTTPR >> - 128b/132b vs. 8b/

Re: [Intel-gfx] [PATCH 1/2] drm/dp: add helpers to read link training delays

2021-10-13 Thread Ville Syrjälä
On Tue, Oct 12, 2021 at 05:43:20PM +0300, Jani Nikula wrote: > The link training delays are different and/or available in different > DPCD offsets depending on: > > - Clock recovery vs. channel equalization > - DPRX vs. LTTPR > - 128b/132b vs. 8b/10b > - DPCD 1.4+ vs. earlier > > Add helpers to g

[Intel-gfx] [PATCH 1/2] drm/dp: add helpers to read link training delays

2021-10-12 Thread Jani Nikula
The link training delays are different and/or available in different DPCD offsets depending on: - Clock recovery vs. channel equalization - DPRX vs. LTTPR - 128b/132b vs. 8b/10b - DPCD 1.4+ vs. earlier Add helpers to get the correct delays in us, reading DPCD if necessary. This is more straightfo