Martin Roth has uploaded this change for review. ( https://review.coreboot.org/25942
Change subject: mb/google/kahlee: Update i2c timings ......................................................................
mb/google/kahlee: Update i2c timings
Change the I2c timings to the latest measurements.
BUG=b:72442912 TEST=Boot grunt
Change-Id: Ib961ec7c2b0a677d9cacdb7d91e5c78173d42017 Signed-off-by: Martin Roth martinroth@google.com --- M src/mainboard/google/kahlee/variants/grunt/devicetree.cb 1 file changed, 7 insertions(+), 7 deletions(-)
git pull ssh://review.coreboot.org:29418/coreboot refs/changes/42/25942/1
diff --git a/src/mainboard/google/kahlee/variants/grunt/devicetree.cb b/src/mainboard/google/kahlee/variants/grunt/devicetree.cb index cfc3198..65e9ae8 100644 --- a/src/mainboard/google/kahlee/variants/grunt/devicetree.cb +++ b/src/mainboard/google/kahlee/variants/grunt/devicetree.cb @@ -24,30 +24,30 @@ # Enable I2C0 for audio, USB3 hub at 400kHz register "i2c[0]" = "{ .speed = I2C_SPEED_FAST, - .rise_time_ns = 95, - .fall_time_ns = 3, + .rise_time_ns = 300, + .fall_time_ns = 34, }"
# Enable I2C1 for H1 at 400kHz register "i2c[1]" = "{ .early_init = 1, .speed = I2C_SPEED_FAST, - .rise_time_ns = 84, + .rise_time_ns = 140, .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 = 320, + .fall_time_ns = 34, }"
# Enable I2C3 for touchscreen at 400kHz register "i2c[3]" = "{ .speed = I2C_SPEED_FAST, - .rise_time_ns = 82, - .fall_time_ns = 67, + .rise_time_ns = 320, + .fall_time_ns = 34, }"
device cpu_cluster 0 on