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authorWisley Chen <wisley.chen@quantatw.com>2019-12-09 19:14:13 +0800
committerPatrick Georgi <pgeorgi@google.com>2019-12-11 11:36:43 +0000
commit42174235ba6a7cfac8243a4c2aedb1271a4659fe (patch)
tree3b789d1f14fd5b7823ad253631ce6c665b1f4dcd /src/mainboard/google
parent106abb82fe122aceb7656641b29a7d676f260c48 (diff)
mb/goog/hatch/var/dratini: Tune i2c frequency to 400 KHz
Tuning i2c frequency for dratini: I2C0: 396 KHz I2C1: 398 KHz I2C3: unused I2C4: 394 KHz BUG=b:145891557 BRANCH=hatch TEST=emerge-hatch coreboot chromeos-bootimage Change-Id: I1431554fbce5f3ce113ef1a934e39448e7ba321c Signed-off-by: Wisley Chen <wisley.chen@quantatw.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/37605 Reviewed-by: Paul Fagerburg <pfagerburg@chromium.org> Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/mainboard/google')
-rw-r--r--src/mainboard/google/hatch/variants/dratini/overridetree.cb9
1 files changed, 6 insertions, 3 deletions
diff --git a/src/mainboard/google/hatch/variants/dratini/overridetree.cb b/src/mainboard/google/hatch/variants/dratini/overridetree.cb
index 28b18b8b7f..564a14d93c 100644
--- a/src/mainboard/google/hatch/variants/dratini/overridetree.cb
+++ b/src/mainboard/google/hatch/variants/dratini/overridetree.cb
@@ -35,15 +35,18 @@ chip soc/intel/cannonlake
},
.i2c[0] = {
.speed = I2C_SPEED_FAST,
+ .rise_time_ns = 50,
+ .fall_time_ns = 15,
},
.i2c[1] = {
.speed = I2C_SPEED_FAST,
- },
- .i2c[3] = {
- .speed = I2C_SPEED_FAST,
+ .rise_time_ns = 60,
+ .fall_time_ns = 25,
},
.i2c[4] = {
.speed = I2C_SPEED_FAST,
+ .rise_time_ns = 60,
+ .fall_time_ns = 60,
},
}"