From 542a2d908defd5a0aa01cda1e850cf37dcb7a1ca Mon Sep 17 00:00:00 2001
From: Zanxi Chen <chenzanxi@huaqin.corp-partner.google.com>
Date: Mon, 31 May 2021 20:13:21 +0800
Subject: mb/google/dedede/var/storo: Modify I2C times for touchpad

Configure I2C rise/fall time in device tree to ensure I2C
CLK runs accurately (380<frequency<400 kHz).

Measured touchpad I2C frequency is 394 kHz

BUG=b:189740533
BRANCH=dedede
TEST=Build bios and make sure frequency meets specification.

Change-Id: Ibc0504a5be6fe9237b8b30783c659a761d10561a
Signed-off-by: Zanxi Chen <chenzanxi@huaqin.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/55109
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>
---
 src/mainboard/google/dedede/variants/storo/overridetree.cb | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'src/mainboard')

diff --git a/src/mainboard/google/dedede/variants/storo/overridetree.cb b/src/mainboard/google/dedede/variants/storo/overridetree.cb
index 40b17df816..6336192579 100644
--- a/src/mainboard/google/dedede/variants/storo/overridetree.cb
+++ b/src/mainboard/google/dedede/variants/storo/overridetree.cb
@@ -26,8 +26,8 @@ chip soc/intel/jasperlake
 		},
 		.i2c[0] = {
 			.speed = I2C_SPEED_FAST,
-			.rise_time_ns = 125,
-			.fall_time_ns = 19,
+			.rise_time_ns = 260,
+			.fall_time_ns = 50,
 		},
 		.i2c[1] = {
 			.speed = I2C_SPEED_FAST,
-- 
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