From 23c923ba727412eb151539c17c92b201316c0324 Mon Sep 17 00:00:00 2001 From: Casper Chang Date: Fri, 12 Jul 2019 22:06:05 +0800 Subject: mb/google/sarien/variants/arcada: Set data hold time for touchpad Elan's touchpad requires min 0.3us data hold time. To fine tune the data hold time of i2c1 to meet specification of Elan's touchpad. BUG=None BRANCH=None TEST=Verified data hold time of i2c1 is around 320ns Signed-off-by: Casper Chang Change-Id: I0fa9db3b50e74f193261be96bd9e305bb19841e3 Reviewed-on: https://review.coreboot.org/c/coreboot/+/34288 Tested-by: build bot (Jenkins) Reviewed-by: Nick Crews Reviewed-by: Duncan Laurie --- src/mainboard/google/sarien/variants/arcada/devicetree.cb | 1 + 1 file changed, 1 insertion(+) (limited to 'src/mainboard') diff --git a/src/mainboard/google/sarien/variants/arcada/devicetree.cb b/src/mainboard/google/sarien/variants/arcada/devicetree.cb index ce960a74c0..cd1925840a 100644 --- a/src/mainboard/google/sarien/variants/arcada/devicetree.cb +++ b/src/mainboard/google/sarien/variants/arcada/devicetree.cb @@ -175,6 +175,7 @@ chip soc/intel/cannonlake .speed = I2C_SPEED_FAST, .rise_time_ns = 52, .fall_time_ns = 110, + .data_hold_time_ns = 330, }, .i2c[4] = { .early_init = 1, -- cgit v1.2.3