[coreboot-gerrit] Change in coreboot[master]: mb/google/zork: config I2C2 freq to 400kHz for dirinboz TP/TS

[Kevin Chiu (Code Review)]

Hello Kevin Chiu,

I'd like you to do a code review. Please visit

https://review.coreboot.org/c/coreboot/+/44515

to review the following change.

Change subject: mb/google/zork: config I2C2 freq to 400kHz for dirinboz TP/TS
......................................................................

mb/google/zork: config I2C2 freq to 400kHz for dirinboz TP/TS

BUG=b:159597999,b:159597998
BRANCH=master
TEST=1. emerge-zork coreboot chromeos-bootimage
     2. power on proto board successfully
     3. measure i2c freq by scope is 400kHz

Change-Id: Icb27ff8a4960caaebc542ee4e507f1611da5a77e
Signed-off-by: Kevin Chiu 
---
M src/mainboard/google/zork/variants/dirinboz/overridetree.cb
1 file changed, 3 insertions(+), 2 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/15/44515/1

diff --git a/src/mainboard/google/zork/variants/dirinboz/overridetree.cb b/src/mainboard/google/zork/variants/dirinboz/overridetree.cb
index 7645ba3..0667943 100644
--- a/src/mainboard/google/zork/variants/dirinboz/overridetree.cb
+++ b/src/mainboard/google/zork/variants/dirinboz/overridetree.cb
@@ -1,5 +1,4 @@
 # SPDX-License-Identifier: GPL-2.0-or-later
-
 chip soc/amd/picasso

# Start : OPN Performance Configuration
@@ -18,10 +17,12 @@

# End : OPN Performance Configuration

-	# I2C2 for touchscreen and trackpad

+	# I2C2 for touchscreen and trackpad
    register "i2c[2]" = "{
    	.speed = I2C_SPEED_FAST,
+		.rise_time_ns = 18,  /* 0 to 2.31 (3.3 * .7) */
+		.fall_time_ns = 57,  /* 2.31 to 0 */
    }"

# I2C3 for H1