Kevin Chiu has uploaded this change for review. ( https://review.coreboot.org/28868
Change subject: google/grunt: Update Audio/TP i2c timing ......................................................................
google/grunt: Update Audio/TP i2c timing
After adjustment on Careena DVT Audio: 402.805 KHz -> 396.8 KHz TP: 406.1 KHz -> 399.5 KHz
BUG=b:110984023 BRANCH=master TEST=emerge-grunt coreboot Change-Id: Ia3eb91ca3772d5f122498e3989ec03838fce06a5 Signed-off-by: Kevin Chiu Kevin.Chiu@quantatw.com --- M src/mainboard/google/kahlee/variants/careena/devicetree.cb 1 file changed, 3 insertions(+), 3 deletions(-)
git pull ssh://review.coreboot.org:29418/coreboot refs/changes/68/28868/1
diff --git a/src/mainboard/google/kahlee/variants/careena/devicetree.cb b/src/mainboard/google/kahlee/variants/careena/devicetree.cb index d633134..9769c42 100644 --- a/src/mainboard/google/kahlee/variants/careena/devicetree.cb +++ b/src/mainboard/google/kahlee/variants/careena/devicetree.cb @@ -27,7 +27,7 @@ # Enable I2C0 for audio, USB3 hub at 400kHz register "i2c[0]" = "{ .speed = I2C_SPEED_FAST, - .rise_time_ns = 95, + .rise_time_ns = 58, .fall_time_ns = 3, }"
@@ -42,8 +42,8 @@ # Enable I2C2 for trackpad, pen at 400kHz register "i2c[2]" = "{ .speed = I2C_SPEED_FAST, - .rise_time_ns = 67, - .fall_time_ns = 55, + .rise_time_ns = 25, + .fall_time_ns = 11, }"
# Enable I2C3 for touchscreen at 400kHz