From 108bf2951648a6953fa96d79fd591868c43da147 Mon Sep 17 00:00:00 2001 From: Kevin Chiu Date: Thu, 16 Aug 2018 22:49:49 +0800 Subject: google/grunt: Update TP/TS/H1 i2c timings After adjustment on Careena EVT TP: 400.0 KHz TS: 396.8 KHz H1: 396.8 KHz BUG=b:112663934,b:112664258 BRANCH=master TEST=emerge-grunt coreboot measure by scope Change-Id: I9eeaf9290d95969a283f14618878e28faf0ea46f Signed-off-by: Kevin Chiu Reviewed-on: https://review.coreboot.org/28119 Reviewed-by: Martin Roth Tested-by: build bot (Jenkins) --- src/mainboard/google/kahlee/variants/careena/devicetree.cb | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) (limited to 'src/mainboard/google/kahlee') diff --git a/src/mainboard/google/kahlee/variants/careena/devicetree.cb b/src/mainboard/google/kahlee/variants/careena/devicetree.cb index 61476a2322..513bd4efee 100644 --- a/src/mainboard/google/kahlee/variants/careena/devicetree.cb +++ b/src/mainboard/google/kahlee/variants/careena/devicetree.cb @@ -32,22 +32,22 @@ chip soc/amd/stoneyridge 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 = 67, + .fall_time_ns = 55, }" # Enable I2C3 for touchscreen at 400kHz register "i2c[3]" = "{ .speed = I2C_SPEED_FAST, - .rise_time_ns = 82, - .fall_time_ns = 67, + .rise_time_ns = 22, + .fall_time_ns = 19, }" device cpu_cluster 0 on -- cgit v1.2.3