diff options
| author | Tony Huang <tony-huang@quanta.corp-partner.google.com> | 2021-05-13 15:06:59 +0800 |
|---|---|---|
| committer | Felix Held <felix-coreboot@felixheld.de> | 2021-06-17 17:05:15 +0000 |
| commit | e4aa07e2bda92b7beacc5b1cd7ca88cefde0f531 (patch) | |
| tree | 66620d6cbac00764817ccb37403f98b8198c3004 /src/mainboard/google/dedede | |
| parent | 5fd0341fccb66099cc2b7ca7f7c44e4136e9bf28 (diff) | |
mb/google/dedede/var/kracko: Configure I2C high and low times
Configure I2C high / low time in device tree to ensure I2C
CLK runs under I2C_SPEED_FAST (400 kHz).
Touchpad: 387.7kHz
Touchscreen: 389.4kHz
Audio: 387.6kHz
P-sensor: 372.5kHz
BaUG=b:178092096
BRANCH=dedede
TEST=Build and EE check after tuning I2C clock is under 400kHz
Change-Id: I4f6bdd3802cd94671325a89458cde981a2ffa929
Signed-off-by: Tony Huang <tony-huang@quanta.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/55407
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Werner Zeh <werner.zeh@siemens.com>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>
Diffstat (limited to 'src/mainboard/google/dedede')
| -rw-r--r-- | src/mainboard/google/dedede/variants/kracko/overridetree.cb | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/src/mainboard/google/dedede/variants/kracko/overridetree.cb b/src/mainboard/google/dedede/variants/kracko/overridetree.cb index 3d9307bed9..dec4c0a4af 100644 --- a/src/mainboard/google/dedede/variants/kracko/overridetree.cb +++ b/src/mainboard/google/dedede/variants/kracko/overridetree.cb @@ -35,18 +35,26 @@ chip soc/intel/jasperlake }, .i2c[0] = { .speed = I2C_SPEED_FAST, + .rise_time_ns = 212, + .fall_time_ns = 38, }, .i2c[1] = { .speed = I2C_SPEED_FAST, }, .i2c[2] = { .speed = I2C_SPEED_FAST, + .rise_time_ns = 212, + .fall_time_ns = 38, }, .i2c[4] = { .speed = I2C_SPEED_FAST, + .rise_time_ns = 212, + .fall_time_ns = 38, }, .i2c[5] = { .speed = I2C_SPEED_FAST, + .rise_time_ns = 212, + .fall_time_ns = 38, }, }" |