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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>
This commit is contained in:
kane_chen 2018-11-29 17:22:57 +08:00 committed by Patrick Georgi
parent 56dd2d6ff1
commit 8440bf7114
1 changed files with 1 additions and 1 deletions
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src/mainboard/google/poppy/variants/rammus/devicetree.cb
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@ -191,7 +191,7 @@ chip soc/intel/skylake
.speed = I2C_SPEED_FAST, .speed = I2C_SPEED_FAST,
.speed_config[0] = { .speed_config[0] = {
.speed = I2C_SPEED_FAST, .speed = I2C_SPEED_FAST,
.scl_lcnt = 190, .scl_lcnt = 170,
.scl_hcnt = 100, .scl_hcnt = 100,
.sda_hold = 36, .sda_hold = 36,
}, },