On 2019-02-01 3:47 p.m., sylvain.bertr...@gmail.com wrote: > On Fri, Feb 01, 2019 at 08:08:30PM +0000, sylvain.bertr...@gmail.com wrote: >> Do you mean non-DC displayport related code is already using udelay instead >> of msleep on linux? > > I grep-ed amdgpu displayport atombios code, got udelay(400) only. > Did the same on drm *_dp_* files, got similar udelays with only a very slow > msleep (which seems justified there). > > But I did not get any udelays with the range of 1ms for "retries". Maybe it > would be a good idea to a similar delay on non-DC displayport code? That would > give more time to "slow" displayort monitors to timeout on their side. >
DRM's AUX code uses usleep_range in drm_dp_dpcd_access. Harry _______________________________________________ amd-gfx mailing list amd-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/amd-gfx
