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authorkane_chen <kane_chen@pegatron.corp-partner.google.com>2018-11-29 17:22:57 +0800
committerPatrick Georgi <pgeorgi@google.com>2018-12-06 12:11:37 +0000
commit8440bf7114dbe7777fb0d0b12ec6725bf362f174 (patch)
treeb1b508da8927acbf813f8042f07f8cf627bb3938
parent56dd2d6ff108105a9349d2644db9706e7d688eeb (diff)
downloadcoreboot-8440bf7114dbe7777fb0d0b12ec6725bf362f174.tar.xz
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 <kane_chen@pegatron.corp-partner.google.com> Change-Id: Ifeb08c2530e6a7674f23f7d48cefa16cfc59cb13 Reviewed-on: https://review.coreboot.org/c/29922 Reviewed-by: Patrick Georgi <pgeorgi@google.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
-rw-r--r--src/mainboard/google/poppy/variants/rammus/devicetree.cb2
1 files changed, 1 insertions, 1 deletions
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,
},