Quoting Feng Tang (2018-05-07 11:36:09) > To fulfil the Dell 4K monitor, the dpcd max retries has been bumped > from 7 to 32, which may hurt the boot/init time for some platforms, > as the 32 retries may take hundreds of ms. If we need that many retries, so be it. No modparam, the driver just has to work. > This patch makes no functional change, but make the max retries > adjustable, so that concerned users/platforms can have an option > to short the wait time. > > On a Intel Atom Processor A3960 based NUC, the i915_init() time could > be reduced from 450ms to 200ms. > > retries = 3: > [ 0.457806] calling i915_init+0x0/0x51 @ 1 > [ 0.662307] initcall i915_init+0x0/0x51 returned 0 after 199694 usecs > > retries = 32: > [ 0.465818] calling i915_init+0x0/0x51 @ 1 > [ 0.925831] initcall i915_init+0x0/0x51 returned 0 after 449219 usecs Why is this synchronous anyway? -Chris _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
