| commit | bf81c24e078c3eaea6cc2cd53e681579543c03a2 | |
| author | John Su <john_su@compal.corp-partner.google.com> | |
| Wed, 16 Feb 2022 06:59:07 +0000 (16 14:59 +0800) | ||
| committer | Felix Held <felix-coreboot@felixheld.de> | |
| Mon, 21 Feb 2022 15:21:28 +0000 (21 15:21 +0000) | ||
| tree | 536e3b220f4229e85ee4ebdeaf7378f13107c99c | treesnapshot (tar.gz zip) |
| parent | aa41f773976f17979a6a32cc7f34d57df89aaeed | commitdiff |
mb/google/brya/variants/felwinter: Adjust I2Cs CLK to be around 400 kHz
Need to tune I2C bus 0/1/3/5 clock frequency under the 400kHz for
audio, TPM, touchscreen, and touchpad.
Audio CLK: 385 kHz
TPM CLK: 380.5 kHz
Touch Screen CLK: 373.3 kHz
Touch Pad CLK: 372.7 kHz
BUG=b:218577918
BRANCH=master
TEST=emerge-brya coreboot chromeos-bootimage
measure by scope with felwinter.
Signed-off-by: John Su <john_su@compal.corp-partner.google.com>
Change-Id: I3e5cc10d6605f9cc41fa6b31da07a81364b72fe0
Reviewed-on: https://review.coreboot.org/c/coreboot/+/62009
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Reviewed-by: EricR Lai <ericr_lai@compal.corp-partner.google.com>
Need to tune I2C bus 0/1/3/5 clock frequency under the 400kHz for
audio, TPM, touchscreen, and touchpad.
Audio CLK: 385 kHz
TPM CLK: 380.5 kHz
Touch Screen CLK: 373.3 kHz
Touch Pad CLK: 372.7 kHz
BUG=b:218577918
BRANCH=master
TEST=emerge-brya coreboot chromeos-bootimage
measure by scope with felwinter.
Signed-off-by: John Su <john_su@compal.corp-partner.google.com>
Change-Id: I3e5cc10d6605f9cc41fa6b31da07a81364b72fe0
Reviewed-on: https://review.coreboot.org/c/coreboot/+/62009
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Reviewed-by: EricR Lai <ericr_lai@compal.corp-partner.google.com>
| src/mainboard/google/brya/variants/felwinter/overridetree.cb | diffblobblamehistory |