From 9bb02a8db1d200ad82f041aebf3e3ceef6ec2d74 Mon Sep 17 00:00:00 2001 From: Ivy Jian Date: Mon, 25 Sep 2023 13:32:35 +0800 Subject: mb/google/rex/var/rex0: Configure I2C5 timing Configure I2C5 timing in devicetree to ensure I2C devices meet timing requirement. BUG=b:300177424 TEST=Build and check I2C devices timing meet spec. | | I2C5-Before | I2C5-After | |-------------|-------------|------------| | FSMB(KHz) | 445.400 | 343.638 | | TLOW(us) | 1.543 | 2.068 | | THIGH(us) | 0.475 | 0.604 | | THD:STA(us) | 0.603 | 0.711 | | TSU:STA(us) | 0.612 | 0.611 | | TSU:STO(us) | 0.605 | 0.611 | | TBUF(us) | >1.914 | >2.044 | Change-Id: I3bb678b66d55c6bfaff76e3e5500a2a3bc3a2c61 Signed-off-by: Ivy Jian Reviewed-on: https://review.coreboot.org/c/coreboot/+/78111 Reviewed-by: Subrata Banik Tested-by: build bot (Jenkins) --- src/mainboard/google/rex/variants/rex0/overridetree.cb | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/src/mainboard/google/rex/variants/rex0/overridetree.cb b/src/mainboard/google/rex/variants/rex0/overridetree.cb index d92dc24088..1d4ba630ca 100644 --- a/src/mainboard/google/rex/variants/rex0/overridetree.cb +++ b/src/mainboard/google/rex/variants/rex0/overridetree.cb @@ -142,8 +142,8 @@ chip soc/intel/meteorlake }, .i2c[5] = { .speed = I2C_SPEED_FAST, - .rise_time_ns = 900, - .fall_time_ns = 400, + .rise_time_ns = 400, + .fall_time_ns = 280, .data_hold_time_ns = 50, }, }" -- cgit v1.2.3