[coreboot-gerrit] Change in coreboot[master]: google/grunt/aleena: Update H1/TP/TS i2c timings

[Lucas Chen (Code Review)]

Lucas Chen has uploaded this change for review. ( https://review.coreboot.org/29548


Change subject: google/grunt/aleena: Update H1/TP/TS i2c timings
......................................................................

google/grunt/aleena: Update H1/TP/TS i2c timings

After adjustment on aleena EVT
Audio: 390.0 KHz
H1: 390.0 KHz
TP: 399.8 KHz
TS: 399.8 kHz

BUG=b:116306959
BRANCH=master
TEST=emerge-grunt coreboot, scope measuring.

Change-Id: I6f621508ce2dbb1b9dcdf529ac35afc80d485f53
Signed-off-by: Lucas Chen <lucas.chen at quanta.corp-partner.google.com>
---
M src/mainboard/google/kahlee/variants/aleena/devicetree.cb
1 file changed, 5 insertions(+), 5 deletions(-)



  git pull ssh://review.coreboot.org:29418/coreboot refs/changes/48/29548/1

diff --git a/src/mainboard/google/kahlee/variants/aleena/devicetree.cb b/src/mainboard/google/kahlee/variants/aleena/devicetree.cb
index 5438e6d..8f2f985 100644
--- a/src/mainboard/google/kahlee/variants/aleena/devicetree.cb
+++ b/src/mainboard/google/kahlee/variants/aleena/devicetree.cb
@@ -32,22 +32,22 @@
 	register "i2c[1]" = "{
 		.early_init = 1,
 		.speed = I2C_SPEED_FAST,
-		.rise_time_ns = 84,
+		.rise_time_ns = 45,
 		.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 = 26,
+		.fall_time_ns = 11,
 	}"
 
 	# Enable I2C3 for touchscreen at 400kHz
 	register "i2c[3]" = "{
 		.speed = I2C_SPEED_FAST,
-		.rise_time_ns = 82,
-		.fall_time_ns = 67,
+		.rise_time_ns = 20,
+		.fall_time_ns = 19,
 	}"
 
 	register "i2c_scl_reset" = "GPIO_I2C0_SCL | GPIO_I2C1_SCL | \

-- 
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Gerrit-Project: coreboot
Gerrit-Branch: master
Gerrit-MessageType: newchange
Gerrit-Change-Id: I6f621508ce2dbb1b9dcdf529ac35afc80d485f53
Gerrit-Change-Number: 29548
Gerrit-PatchSet: 1
Gerrit-Owner: Lucas Chen <lucas.chen at quanta.corp-partner.google.com>
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