diff options
| author | Maulik V Vaghela <maulik.v.vaghela@intel.com> | 2021-01-06 11:13:07 +0530 |
|---|---|---|
| committer | Karthik Ramasubramanian <kramasub@google.com> | 2021-01-08 07:41:20 +0000 |
| commit | 7e06a9044a3da814ce3a3e99532d064170fd5521 (patch) | |
| tree | 43f265324a894e58d3f5cf781424eed39267b9e0 /src/mainboard/google | |
| parent | 2e424ff2d726a87632196c73d26666018bc3797a (diff) | |
| download | coreboot-7e06a9044a3da814ce3a3e99532d064170fd5521.tar.xz | |
mb/google/dedede: Enable "FastPkgCRampDisable" upd for noise mitigation
As part of acoustic noise mitigation calibration, we need to enable
FastPkgCRampDisable upd along with slew rate = 1. This values has been
derived based on noise calibration done.
Please refer document 575216 for procedure.
BUG=None
BRANCH=dedede
TEST=correct value has been programmed and slew rate measurement
is correct on scope.
Change-Id: Ie42c8ab647ff42fa043b6f717a9834f9b9c551f6
Signed-off-by: Maulik V Vaghela <maulik.v.vaghela@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/49134
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>
Reviewed-by: Evan Green <evgreen@chromium.org>
Diffstat (limited to 'src/mainboard/google')
| -rw-r--r-- | src/mainboard/google/dedede/variants/drawcia/overridetree.cb | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/src/mainboard/google/dedede/variants/drawcia/overridetree.cb b/src/mainboard/google/dedede/variants/drawcia/overridetree.cb index e09dbe8bf7..59593432fe 100644 --- a/src/mainboard/google/dedede/variants/drawcia/overridetree.cb +++ b/src/mainboard/google/dedede/variants/drawcia/overridetree.cb @@ -67,7 +67,8 @@ chip soc/intel/jasperlake # Enable Acoustic noise mitigation and set slew rate to 1/4 # Rest of the parameters are 0 by default. register "AcousticNoiseMitigation" = "1" - register "SlowSlewRate" = "1" + register "SlowSlewRate" = "SlewRateFastBy4" + register "FastPkgCRampDisable" = "1" device domain 0 on device pci 05.0 on # IPU - MIPI Camera |