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| author | Scott Chao <scott_chao@wistron.corp-partner.google.com> | 2022-04-18 11:11:46 +0800 |
|---|---|---|
| committer | Felix Held <felix-coreboot@felixheld.de> | 2022-04-27 12:27:25 +0000 |
| commit | ab58d2b488e72334458f774a254dbeffaa63a219 (patch) | |
| tree | bdaa9b2beb54edb8da81bfba055d06024e7ec700 /src/mainboard/google/brya/variants/crota | |
| parent | 075f4e775136c3893ff65d7bc19e60828d8e7854 (diff) | |
| download | coreboot-ab58d2b488e72334458f774a254dbeffaa63a219.tar.gz coreboot-ab58d2b488e72334458f774a254dbeffaa63a219.tar.bz2 coreboot-ab58d2b488e72334458f774a254dbeffaa63a219.zip | |
mb/google/brya/var/crota: Limit dram speed to 4800 MT/s
When using LPDDR5 on a Type-C PCB, the Intel ADL-P PDG (Rev. 2.0.1)
page 121 recommends a maximum DRAM speed of 4800 MT/s.
BUG=b:229549930
BRANCH=none
TEST=build and pass memory training
Signed-off-by: Scott Chao <scott_chao@wistron.corp-partner.google.com>
Change-Id: I38f0006d478702afb382d30338f20b46641964ef
Reviewed-on: https://review.coreboot.org/c/coreboot/+/63682
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Reviewed-by: Paul Menzel <paulepanter@mailbox.org>
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
Diffstat (limited to 'src/mainboard/google/brya/variants/crota')
| -rw-r--r-- | src/mainboard/google/brya/variants/crota/overridetree.cb | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/src/mainboard/google/brya/variants/crota/overridetree.cb b/src/mainboard/google/brya/variants/crota/overridetree.cb index 23d7f3c69a9c..7a6b99e984a9 100644 --- a/src/mainboard/google/brya/variants/crota/overridetree.cb +++ b/src/mainboard/google/brya/variants/crota/overridetree.cb @@ -19,6 +19,8 @@ end chip soc/intel/alderlake + register "max_dram_speed" = "4800" + # Acoustic settings register "acoustic_noise_mitigation" = "1" register "slow_slew_rate[VR_DOMAIN_IA]" = "SLEW_FAST_4" |