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mb/google/trulo/var/uldrenite: Adjust Touchpad I2C timing

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Adjust I2C/data fall Time to 13.5 ns and I2C data hold time to 353 ns

BUG=b:397150937
BRANCH=firmware-trulo-15217.771.B
TEST=Confirm the measured waveform of the Touchpad .

Change-Id: I16a9967f7e99892f2aa337ad9290252ab63a5b97
Signed-off-by: jamie_chen <jamie_chen@compal.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/86743
Reviewed-by: Kapil Porwal <kapilporwal@google.com>
Reviewed-by: Eric Lai <ericllai@google.com>
Reviewed-by: Dtrain Hsu <dtrain_hsu@compal.corp-partner.google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
jamie_chen 2025-03-06 09:23:29 +08:00 • committed by Subrata Banik
commit c278be512b
1 changed files with 9 additions and 6 deletions
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15
src/mainboard/google/brya/variants/uldrenite/overridetree.cb
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@ -150,12 +150,15 @@ chip soc/intel/alderlake
}
},
.i2c[1] = {
.speed = I2C_SPEED_FAST,
.speed_config[0] = {
.speed = I2C_SPEED_FAST,
.scl_lcnt = 158,
.scl_hcnt = 79,
.sda_hold = 7,
.speed = I2C_SPEED_FAST,
.rise_time_ns = 200,
.fall_time_ns = 150,
.data_hold_time_ns = 950,
.speed_config[0] = {
.speed = I2C_SPEED_FAST,
.scl_lcnt = 166,
.scl_hcnt = 83,
.sda_hold = 35,
}
},
.i2c[5] = {