From 8440bf7114dbe7777fb0d0b12ec6725bf362f174 Mon Sep 17 00:00:00 2001 From: kane_chen Date: Thu, 29 Nov 2018 17:22:57 +0800 Subject: rammus: ELAN touchpad I2C special timing requirement According to issue tracker b:119899090. https://partnerissuetracker.corp.google.com/issues/119899090 We modify rammus devicetree.cb .i2c[1] configuration to meet ELAN touchpad I2C special timing requirement. BUG=b:119899090 BRANCH=firmware-rammus-11275.B TEST=emerge-rammus coreboot chromeos-ec chromeos-bootimage Flash FW to DUT, and check touchpad I2C characteristics meet requirement Signed-off-by: YanRu chen Change-Id: Ifeb08c2530e6a7674f23f7d48cefa16cfc59cb13 Reviewed-on: https://review.coreboot.org/c/29922 Reviewed-by: Patrick Georgi Tested-by: build bot (Jenkins) --- src/mainboard/google/poppy/variants/rammus/devicetree.cb | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/mainboard/google/poppy/variants/rammus/devicetree.cb b/src/mainboard/google/poppy/variants/rammus/devicetree.cb index f10b84d988..3af712f5ec 100644 --- a/src/mainboard/google/poppy/variants/rammus/devicetree.cb +++ b/src/mainboard/google/poppy/variants/rammus/devicetree.cb @@ -191,7 +191,7 @@ chip soc/intel/skylake .speed = I2C_SPEED_FAST, .speed_config[0] = { .speed = I2C_SPEED_FAST, - .scl_lcnt = 190, + .scl_lcnt = 170, .scl_hcnt = 100, .sda_hold = 36, }, -- cgit v1.2.3