diff options
| author | Kevin Chiu <Kevin.Chiu@quantatw.com> | 2018-08-16 22:49:49 +0800 |
|---|---|---|
| committer | Martin Roth <martinroth@google.com> | 2018-08-17 21:10:34 +0000 |
| commit | 108bf2951648a6953fa96d79fd591868c43da147 (patch) | |
| tree | cd66ca0a1b692808c84c2ed7cc164cb0dc18fd43 /src/mainboard/google/kahlee | |
| parent | 24462e65076372dd15cc6587a04fc2c49a9afe5a (diff) | |
google/grunt: Update TP/TS/H1 i2c timings
After adjustment on Careena EVT
TP: 400.0 KHz
TS: 396.8 KHz
H1: 396.8 KHz
BUG=b:112663934,b:112664258
BRANCH=master
TEST=emerge-grunt coreboot
measure by scope
Change-Id: I9eeaf9290d95969a283f14618878e28faf0ea46f
Signed-off-by: Kevin Chiu <Kevin.Chiu@quantatw.com>
Reviewed-on: https://review.coreboot.org/28119
Reviewed-by: Martin Roth <martinroth@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/mainboard/google/kahlee')
| -rw-r--r-- | src/mainboard/google/kahlee/variants/careena/devicetree.cb | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/src/mainboard/google/kahlee/variants/careena/devicetree.cb b/src/mainboard/google/kahlee/variants/careena/devicetree.cb index 61476a2322..513bd4efee 100644 --- a/src/mainboard/google/kahlee/variants/careena/devicetree.cb +++ b/src/mainboard/google/kahlee/variants/careena/devicetree.cb @@ -32,22 +32,22 @@ chip soc/amd/stoneyridge register "i2c[1]" = "{ .early_init = 1, .speed = I2C_SPEED_FAST, - .rise_time_ns = 84, + .rise_time_ns = 45, .fall_time_ns = 4, }" # Enable I2C2 for trackpad, pen at 400kHz register "i2c[2]" = "{ .speed = I2C_SPEED_FAST, - .rise_time_ns = 117, - .fall_time_ns = 113, + .rise_time_ns = 67, + .fall_time_ns = 55, }" # Enable I2C3 for touchscreen at 400kHz register "i2c[3]" = "{ .speed = I2C_SPEED_FAST, - .rise_time_ns = 82, - .fall_time_ns = 67, + .rise_time_ns = 22, + .fall_time_ns = 19, }" device cpu_cluster 0 on |