diff options
| author | Tao Xia <xiatao5@huaqin.corp-partner.google.com> | 2021-07-02 11:30:46 +0800 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2021-07-07 14:57:43 +0000 |
| commit | 6c1bdc8939e5210d5ef0d4b07896e77ce9548983 (patch) | |
| tree | a18c5395f1ffbf4869acf94f5c9bbdd2f28779d5 | |
| parent | ae6a3e83ca240a154d62d796bac9811f813b871e (diff) | |
mb/google/dedede/var/sasukette: Configure I2C times for touchpad
Configure I2C high / low time in the device tree to ensure I2C
CLK runs accurately between 380 kHz and 400 kHz.
Measured I2C frequency just as below after tuning:
touchpad:390.4 kHz
BUG=b:192601250
BRANCH=dedede
TEST=Build and check after tuning I2C clock is between 380 kHz and 400 kHz
Signed-off-by: Tao Xia <xiatao5@huaqin.corp-partner.google.com>
Change-Id: Ibe1603a48a3e841b6a50aa0c703697ec615b2854
Reviewed-on: https://review.coreboot.org/c/coreboot/+/56016
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@mailbox.org>
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>
| -rw-r--r-- | src/mainboard/google/dedede/variants/sasukette/overridetree.cb | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/mainboard/google/dedede/variants/sasukette/overridetree.cb b/src/mainboard/google/dedede/variants/sasukette/overridetree.cb index a39b9d1a7d..776ba8af36 100644 --- a/src/mainboard/google/dedede/variants/sasukette/overridetree.cb +++ b/src/mainboard/google/dedede/variants/sasukette/overridetree.cb @@ -23,8 +23,8 @@ chip soc/intel/jasperlake .speed = I2C_SPEED_FAST, .speed_config[0] = { .speed = I2C_SPEED_FAST, - .scl_lcnt = 185, - .scl_hcnt = 95, + .scl_lcnt = 180, + .scl_hcnt = 90, .sda_hold = 40, } }, |