From a779b989a2175ee1ed3df8f4e6ee998998ea6c7e Mon Sep 17 00:00:00 2001 From: Ivy Jian Date: Wed, 20 Mar 2024 15:14:38 +0800 Subject: mb/google/brox: Configure I2C timing for I2C devices Configure I2C0/1 timing in devicetree to meet timing requirement. (THIGH(us) minimum is 0.6us). Before: I2C0 : THIGH(us) 0.595us I2C1 : THIGH(us) 0.582us After: I2C0 : THIGH(us) 0.673us I2C1 : THIGH(us) 0.666us Change-Id: I79af4fde4eb08d4eb896794756a633701bebb755 Signed-off-by: Ivy Jian Reviewed-on: https://review.coreboot.org/c/coreboot/+/81348 Reviewed-by: Shelley Chen Tested-by: build bot (Jenkins) Reviewed-by: Karthik Ramasubramanian --- src/mainboard/google/brox/variants/baseboard/brox/devicetree.cb | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'src/mainboard/google/brox') diff --git a/src/mainboard/google/brox/variants/baseboard/brox/devicetree.cb b/src/mainboard/google/brox/variants/baseboard/brox/devicetree.cb index 3e0e7fb91e..9ed0602e2e 100644 --- a/src/mainboard/google/brox/variants/baseboard/brox/devicetree.cb +++ b/src/mainboard/google/brox/variants/baseboard/brox/devicetree.cb @@ -97,13 +97,13 @@ chip soc/intel/alderlake .i2c[0] = { .speed = I2C_SPEED_FAST, .rise_time_ns = 650, - .fall_time_ns = 400, + .fall_time_ns = 350, .data_hold_time_ns = 50, }, .i2c[1] = { .speed = I2C_SPEED_FAST, .rise_time_ns = 600, - .fall_time_ns = 400, + .fall_time_ns = 350, .data_hold_time_ns = 50, }, .i2c[2] = { -- cgit v1.2.3