From 0363d6da2a674b3ec118b777274abb198ae79149 Mon Sep 17 00:00:00 2001
From: Wisley Chen <wisley.chen@quantatw.com>
Date: Tue, 5 Jan 2021 21:53:41 +0800
Subject: [PATCH] mb/google/volteer/var/elemi: Tune i2c frequency

Tuning i2c frequency for elemi
I2C0: 396.6 KHz
I2C1: 395.9 KHz
I2C5: 397.1 KHz

BUG=b:176794161
BRANCH=volteer
TEST=emerge-voleteer coreboot, and measure i2c clock.

Change-Id: I23b04a9b5ff8873d9de12e762e8e2786ef474ac0
Signed-off-by: Wisley Chen <wisley.chen@quantatw.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/49116
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
---
 .../volteer/variants/elemi/overridetree.cb    | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/src/mainboard/google/volteer/variants/elemi/overridetree.cb b/src/mainboard/google/volteer/variants/elemi/overridetree.cb
index af58b81701..c30dce39b4 100644
--- a/src/mainboard/google/volteer/variants/elemi/overridetree.cb
+++ b/src/mainboard/google/volteer/variants/elemi/overridetree.cb
@@ -36,9 +36,21 @@ chip soc/intel/tigerlake
 		},
 		.i2c[0] = {
 			.speed = I2C_SPEED_FAST,
+			.speed_config[0] = {
+				.speed = I2C_SPEED_FAST,
+				.scl_lcnt = 160,
+				.scl_hcnt = 75,
+				.sda_hold = 36,
+			},
 		},
 		.i2c[1] = {
 			.speed = I2C_SPEED_FAST,
+                        .speed_config[0] = {
+				.speed = I2C_SPEED_FAST,
+				.scl_lcnt = 158,
+				.scl_hcnt = 75,
+				.sda_hold = 36,
+                        },
 		},
 		.i2c[2] = {
 			.speed = I2C_SPEED_FAST,
@@ -48,6 +60,13 @@ chip soc/intel/tigerlake
 		},
 		.i2c[5] = {
 			.speed = I2C_SPEED_FAST,
+			.speed_config[0] = {
+				.speed = I2C_SPEED_FAST,
+				.scl_lcnt = 158,
+				.scl_hcnt = 75,
+				.sda_hold = 36,
+                        },
+
 		},
 	}"