diff options
| author | Zanxi Chen <chenzanxi@huaqin.corp-partner.google.com> | 2021-05-31 20:13:21 +0800 |
|---|---|---|
| committer | Werner Zeh <werner.zeh@siemens.com> | 2021-06-04 03:43:53 +0000 |
| commit | 542a2d908defd5a0aa01cda1e850cf37dcb7a1ca (patch) | |
| tree | 2b1fa5dcb8425648859a92f505aad4a030eb1abc | |
| parent | dffcd4ed68fb37f9d7405b9de345fa9240f702db (diff) | |
mb/google/dedede/var/storo: Modify I2C times for touchpad
Configure I2C rise/fall time in device tree to ensure I2C
CLK runs accurately (380<frequency<400 kHz).
Measured touchpad I2C frequency is 394 kHz
BUG=b:189740533
BRANCH=dedede
TEST=Build bios and make sure frequency meets specification.
Change-Id: Ibc0504a5be6fe9237b8b30783c659a761d10561a
Signed-off-by: Zanxi Chen <chenzanxi@huaqin.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/55109
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>
| -rw-r--r-- | src/mainboard/google/dedede/variants/storo/overridetree.cb | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/mainboard/google/dedede/variants/storo/overridetree.cb b/src/mainboard/google/dedede/variants/storo/overridetree.cb index 40b17df816..6336192579 100644 --- a/src/mainboard/google/dedede/variants/storo/overridetree.cb +++ b/src/mainboard/google/dedede/variants/storo/overridetree.cb @@ -26,8 +26,8 @@ chip soc/intel/jasperlake }, .i2c[0] = { .speed = I2C_SPEED_FAST, - .rise_time_ns = 125, - .fall_time_ns = 19, + .rise_time_ns = 260, + .fall_time_ns = 50, }, .i2c[1] = { .speed = I2C_SPEED_FAST, |