From 3087bf528352d1ee663e028cd951c94199b6c322 Mon Sep 17 00:00:00 2001 From: Chris Zhou Date: Mon, 8 Oct 2018 11:36:48 +0800 Subject: [PATCH] mb/google/kahlee/variants/liara: Update H1/TP/TS i2c timings After adjustment on Liara EVT H1: 392.03 KHz TP: 397.87 KHz TS: 397.71 KHz BUG=b:116309237 BRANCH=master TEST=emerge-grunt coreboot chromeos-bootimage measure by scope Change-Id: Ib5d7ce09ac58f33ee826d7541e1a0d14a03add9a Signed-off-by: Chris Zhou Reviewed-on: https://review.coreboot.org/28960 Tested-by: build bot (Jenkins) Reviewed-by: Martin Roth --- .../google/kahlee/variants/liara/devicetree.cb | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/src/mainboard/google/kahlee/variants/liara/devicetree.cb b/src/mainboard/google/kahlee/variants/liara/devicetree.cb index a2134922e8..0dfe204bfa 100644 --- a/src/mainboard/google/kahlee/variants/liara/devicetree.cb +++ b/src/mainboard/google/kahlee/variants/liara/devicetree.cb @@ -32,22 +32,22 @@ chip soc/amd/stoneyridge register "i2c[1]" = "{ .early_init = 1, .speed = I2C_SPEED_FAST, - .rise_time_ns = 45, - .fall_time_ns = 4, + .rise_time_ns = 3, + .fall_time_ns = 2, }" # Enable I2C2 for trackpad, pen at 400kHz register "i2c[2]" = "{ .speed = I2C_SPEED_FAST, - .rise_time_ns = 48, - .fall_time_ns = 37, + .rise_time_ns = 3, + .fall_time_ns = 2, }" # Enable I2C3 for touchscreen at 400kHz register "i2c[3]" = "{ .speed = I2C_SPEED_FAST, - .rise_time_ns = 82, - .fall_time_ns = 67, + .rise_time_ns = 16, + .fall_time_ns = 8, }" device cpu_cluster 0 on