Lucas Chen has uploaded this change for review. ( https://review.coreboot.org/29548
Change subject: google/grunt/aleena: Update H1/TP/TS i2c timings ......................................................................
google/grunt/aleena: Update H1/TP/TS i2c timings
After adjustment on aleena EVT Audio: 390.0 KHz H1: 390.0 KHz TP: 399.8 KHz TS: 399.8 kHz
BUG=b:116306959 BRANCH=master TEST=emerge-grunt coreboot, scope measuring.
Change-Id: I6f621508ce2dbb1b9dcdf529ac35afc80d485f53 Signed-off-by: Lucas Chen lucas.chen@quanta.corp-partner.google.com --- M src/mainboard/google/kahlee/variants/aleena/devicetree.cb 1 file changed, 5 insertions(+), 5 deletions(-)
git pull ssh://review.coreboot.org:29418/coreboot refs/changes/48/29548/1
diff --git a/src/mainboard/google/kahlee/variants/aleena/devicetree.cb b/src/mainboard/google/kahlee/variants/aleena/devicetree.cb index 5438e6d..8f2f985 100644 --- a/src/mainboard/google/kahlee/variants/aleena/devicetree.cb +++ b/src/mainboard/google/kahlee/variants/aleena/devicetree.cb @@ -32,22 +32,22 @@ 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 = 26, + .fall_time_ns = 11, }"
# Enable I2C3 for touchscreen at 400kHz register "i2c[3]" = "{ .speed = I2C_SPEED_FAST, - .rise_time_ns = 82, - .fall_time_ns = 67, + .rise_time_ns = 20, + .fall_time_ns = 19, }"
register "i2c_scl_reset" = "GPIO_I2C0_SCL | GPIO_I2C1_SCL | \