From d5325ddcc27535e13a224cb62759933186de0d39 Mon Sep 17 00:00:00 2001 From: "peichao.wang" Date: Tue, 9 Oct 2018 12:18:31 +0800 Subject: [PATCH] mb/google/octopus: Drop I2C bus 0 clock frequency for Phaser Need to tune I2C bus 0 clock frequency under the 400KHz since this bus attached the Stylus EMR pen and need meet the spec. Bug=b:117297214 TEST=flash coreboot to the DUT and measure I2C bus 0 clock frequency whether under 400KHz Change-Id: I06d9d25f52d7f641d937de0d6b7df3d7a076fbf9 Signed-off-by: Peichao.Wang Reviewed-on: https://review.coreboot.org/28973 Reviewed-by: Aaron Durbin Tested-by: build bot (Jenkins) --- src/mainboard/google/octopus/variants/phaser/overridetree.cb | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/src/mainboard/google/octopus/variants/phaser/overridetree.cb b/src/mainboard/google/octopus/variants/phaser/overridetree.cb index 2f6915e62a..3a208ea600 100644 --- a/src/mainboard/google/octopus/variants/phaser/overridetree.cb +++ b/src/mainboard/google/octopus/variants/phaser/overridetree.cb @@ -20,8 +20,8 @@ chip soc/intel/apollolake }, .i2c[0] = { .speed = I2C_SPEED_FAST, - .rise_time_ns = 152, - .fall_time_ns = 30, + .rise_time_ns = 66, + .fall_time_ns = 90, }, .i2c[5] = { .speed = I2C_SPEED_FAST,