From 02cce9024e7ffc142ddf309bba089a0940a2dd7f Mon Sep 17 00:00:00 2001 From: John Su Date: Mon, 8 Jun 2020 17:23:17 +0800 Subject: mb/google/dedede/variants/waddledoo: Adjust I2Cs CLK to meet spec After adjustment on waddledoo Touch Pad CLK: 392.9 KHz Touch Screen CLK: 387.4 KHz Audio CLK: 350.9 KHz BUG=b:151302522 BRANCH=master TEST=emerge-dedede coreboot chromeos-bootimage measure by scope with waddledoo. Signed-off-by: John Su Change-Id: Iec02a751f1effdbefbb2969db2fd57f27ecdd033 Reviewed-on: https://review.coreboot.org/c/coreboot/+/42187 Reviewed-by: Justin TerAvest Reviewed-by: Karthik Ramasubramanian Tested-by: build bot (Jenkins) --- src/mainboard/google/dedede/variants/waddledoo/overridetree.cb | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) (limited to 'src/mainboard/google/dedede/variants/waddledoo') diff --git a/src/mainboard/google/dedede/variants/waddledoo/overridetree.cb b/src/mainboard/google/dedede/variants/waddledoo/overridetree.cb index 4546c9f026..b8be9268ce 100644 --- a/src/mainboard/google/dedede/variants/waddledoo/overridetree.cb +++ b/src/mainboard/google/dedede/variants/waddledoo/overridetree.cb @@ -24,8 +24,8 @@ chip soc/intel/jasperlake }, .i2c[0] = { .speed = I2C_SPEED_FAST, - .rise_time_ns = 66, - .fall_time_ns = 90, + .rise_time_ns = 270, + .fall_time_ns = 270, .data_hold_time_ns = 350, }, .i2c[1] = { @@ -33,6 +33,8 @@ chip soc/intel/jasperlake }, .i2c[2] = { .speed = I2C_SPEED_FAST, + .rise_time_ns = 200, + .fall_time_ns = 200, }, .i2c[3] = { .speed = I2C_SPEED_FAST, @@ -41,8 +43,8 @@ chip soc/intel/jasperlake .speed = I2C_SPEED_FAST, .speed_config[0] = { .speed = I2C_SPEED_FAST, - .scl_lcnt = 176, - .scl_hcnt = 95, + .scl_lcnt = 200, + .scl_hcnt = 120, .sda_hold = 36, } }, -- cgit v1.2.3