From 7b1e7c30a7168f6f626b661d2a4647f6235e4f7f Mon Sep 17 00:00:00 2001 From: Wisley Chen Date: Tue, 29 Nov 2022 12:22:43 +0600 Subject: mb/google/brya/var/anahera: Adjust I2C5 timing for touchpad Adjust scl_lcnt, scl_hcnt, sda_hold value for I2C5 to meet touchpad SPEC. BUG=b:260540852 BRANCH=firmware-brya-14505.B TEST=build, checked TP function work normally, and measure the timing meet SPEC tLOW ~1.72 us tHIGH ~0.63 us tHD ~0.69 us fscl 383 kHz Change-Id: I9036a604a90558911c4f8a492db9f1f0f28bf404 Signed-off-by: Wisley Chen Reviewed-on: https://review.coreboot.org/c/coreboot/+/70171 Tested-by: build bot (Jenkins) Reviewed-by: Eric Lai Reviewed-by: YH Lin Reviewed-by: Nick Vaccaro --- src/mainboard/google/brya/variants/anahera/overridetree.cb | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/src/mainboard/google/brya/variants/anahera/overridetree.cb b/src/mainboard/google/brya/variants/anahera/overridetree.cb index df7f63248a..1773e0ee52 100644 --- a/src/mainboard/google/brya/variants/anahera/overridetree.cb +++ b/src/mainboard/google/brya/variants/anahera/overridetree.cb @@ -66,7 +66,12 @@ chip soc/intel/alderlake .speed = I2C_SPEED_FAST, .rise_time_ns = 650, .fall_time_ns = 400, - .data_hold_time_ns = 50, + .speed_config[0] = { + .speed = I2C_SPEED_FAST, + .scl_lcnt = 170, + .scl_hcnt = 70, + .sda_hold = 40, + } }, }" register "tcc_offset" = "3" # TCC of 97C -- cgit v1.2.3