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mb/google/skyrim/var/winterhold: Update I2C bus0 settings 

Update settings for touchpad I2C frequency and data hold time.
I2C frequency and data hold time need to meet touchpad spec.
- I2C frequency: 380kHz - 400kHz
- Data hold time: 0.3us - 0.9us

BUG=b:262320419
TEST=On winterhold, touchpad i2c measurement from vendor,
Frequencies: 395 kHz, Data hold time: 0.66 us

Change-Id: I40fa6f9e88656d4ec02a4120f75a2a9413b5abaa
Signed-off-by: Dtrain Hsu <dtrain_hsu@compal.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/71853
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
This commit is contained in:
Dtrain Hsu 2023-01-12 11:31:37 +08:00 committed by Martin L Roth
parent a4f85470f7
commit 429df8adbe
1 changed files with 10 additions and 0 deletions
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10
src/mainboard/google/skyrim/variants/winterhold/overridetree.cb
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@ -98,6 +98,16 @@ chip soc/amd/mendocino
register "stt_c_apu_F" = "0xE866" register "stt_c_apu_F" = "0xE866"
register "stt_skin_temp_apu_F" = "0x3200" register "stt_skin_temp_apu_F" = "0x3200"
register "i2c[0]" = "{
.speed = I2C_SPEED_FAST,
.speed_config[0] = {
.speed = I2C_SPEED_FAST,
.scl_hcnt = 107,
.scl_lcnt = 230,
.sda_hold = 100
}
}"
device domain 0 on device domain 0 on
register "dxio_tx_vboost_enable" = "1" register "dxio_tx_vboost_enable" = "1"