[coreboot-gerrit] Change in coreboot[master]: mb/goog/hatch/var/kindred: Tune i2c frequency to 400 KHz

[David Wu (Code Review)]

David Wu has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/37831 )

Change subject: mb/goog/hatch/var/kindred: Tune i2c frequency to 400 KHz
......................................................................

mb/goog/hatch/var/kindred: Tune i2c frequency to 400 KHz

Tuning i2c frequency for kindred:
I2C0: 391.8 KHz
I2C1: 396.4 KHz
I2C4: 388.8 KHz

BUG=b:146535585
BRANCH=hatch
TEST=emerge-hatch coreboot chromeos-bootimage

Change-Id: I55d095efb60eba4e860b54bb90e8e0df62d88419
Signed-off-by: David Wu 
---
M src/mainboard/google/hatch/variants/kindred/overridetree.cb
1 file changed, 6 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/31/37831/1

diff --git a/src/mainboard/google/hatch/variants/kindred/overridetree.cb b/src/mainboard/google/hatch/variants/kindred/overridetree.cb
index 1122609..3bc5669 100644
--- a/src/mainboard/google/hatch/variants/kindred/overridetree.cb
+++ b/src/mainboard/google/hatch/variants/kindred/overridetree.cb
@@ -36,12 +36,18 @@
    	},
    	.i2c[0] = {
    		.speed = I2C_SPEED_FAST,
+                        .rise_time_ns = 50,
+                        .fall_time_ns = 15,
    	},
    	.i2c[1] = {
    		.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,
    	},
    }"