tree 32dd8edf87dad489351bf89375865b072a607e53
parent a20a02e82af541fa1e2fd34b73d42d3f2c2d9c1e
author Nico Huber <nico.h@gmx.de> 1616947620 +0200
committer Nico Huber <nico.h@gmx.de> 1618260128 +0000

nb/intel/x4x: Refactor sync DLL programming (part 2)

Instead of counting consecutive matches (in `j`), check for a second
match directly in the control flow. Also, add some dedicated variables:

* `tap`: Keeps track of the tap value that resulted in a match and
         is eventually programmed into the hardware.

* `tap2`: Is just temporarily used to search for another edge.

Keeping `tap` sync'ed with the hardware has the benefit that we don't
need to read the programmed value back for later fixups.

Change-Id: I3ae541c39efdc695f5ca74bc757b2f009239ec93
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/51903
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>