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| author | Michał Żygowski <michal.zygowski@3mdeb.com> | 2018-07-05 16:53:44 +0200 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2018-07-10 09:53:22 +0000 |
| commit | 654a45d2ad55fe6ea0a99fb98dcaeaf5a06a04be (patch) | |
| tree | 22c2be45b0fe5c029d4c460d8c768f96935a62bc /util/vgabios/Makefile | |
| parent | 209a1bf8cab6413d46399672c9ee402fc5971b54 (diff) | |
src/sb/amd/pi/hudson/sd.c: disable SDR50 tuning and set correct clock freq in SD2.0 mode
According to BKDG for AMD Family 16h Models 30h-3Fh Processors
SDR50 tuning should be disabled in 0xA8 register.
Also fix clock frequency setting in 0xA4 for stepping >= A1
which caused reduced performance of SD cards transfer speed
even by half.
Change-Id: I80ca754b0c89e08aa90ff885467c7486a3efb999
Signed-off-by: Michał Żygowski <michal.zygowski@3mdeb.com>
Signed-off-by: Piotr Król <piotr.krol@3mdeb.com>
Reviewed-on: https://review.coreboot.org/27359
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Diffstat (limited to 'util/vgabios/Makefile')
0 files changed, 0 insertions, 0 deletions