GNUBoot
/
coreboot-kgpe-d16
2
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

mb/google/kahlee/variants/liara: Update H1/TP/TS i2c timings 

After adjustment on Liara EVT
H1: 392.03 KHz
TP: 397.87 KHz
TS: 397.71 KHz

BUG=b:116309237
BRANCH=master
TEST=emerge-grunt coreboot chromeos-bootimage
     measure by scope

Change-Id: Ib5d7ce09ac58f33ee826d7541e1a0d14a03add9a
Signed-off-by: Chris Zhou <chris_zhou@compal.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/28960
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martinroth@google.com>
This commit is contained in:
Chris Zhou 2018-10-08 11:36:48 +08:00 committed by Martin Roth
parent 56dceb2e1a
commit 3087bf5283
1 changed files with 6 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
src/mainboard/google/kahlee/variants/liara/devicetree.cb
View File

@ -32,22 +32,22 @@ chip soc/amd/stoneyridge
register "i2c[1]" = "{ register "i2c[1]" = "{
.early_init = 1, .early_init = 1,
.speed = I2C_SPEED_FAST, .speed = I2C_SPEED_FAST,
.rise_time_ns = 45, .rise_time_ns = 3,
.fall_time_ns = 4, .fall_time_ns = 2,
}" }"
# Enable I2C2 for trackpad, pen at 400kHz # Enable I2C2 for trackpad, pen at 400kHz
register "i2c[2]" = "{ register "i2c[2]" = "{
.speed = I2C_SPEED_FAST, .speed = I2C_SPEED_FAST,
.rise_time_ns = 48, .rise_time_ns = 3,
.fall_time_ns = 37, .fall_time_ns = 2,
}" }"
# Enable I2C3 for touchscreen at 400kHz # Enable I2C3 for touchscreen at 400kHz
register "i2c[3]" = "{ register "i2c[3]" = "{
.speed = I2C_SPEED_FAST, .speed = I2C_SPEED_FAST,
.rise_time_ns = 82, .rise_time_ns = 16,
.fall_time_ns = 67, .fall_time_ns = 8,
}" }"
device cpu_cluster 0 on device cpu_cluster 0 on