From 12b376c87ff9367133618866659d2a5987d3e9a5 Mon Sep 17 00:00:00 2001 From: Ren Kuo Date: Wed, 21 Oct 2020 11:26:48 +0800 Subject: [PATCH] mb/google/dedede/var/magolor: Configure I2C high and low time Configure the I2C bus high and low time for all enabled I2C buses. BUG=b:168783630 TEST=Measured the I2C bus frequency reduce to 387 KHz. Signed-off-by: Ren Kuo Change-Id: I9f5b81815f86db7bdcea95a95b9c9b235b4a34b1 Reviewed-on: https://review.coreboot.org/c/coreboot/+/46613 Reviewed-by: Karthik Ramasubramanian Tested-by: build bot (Jenkins) --- .../dedede/variants/magolor/overridetree.cb | 24 +++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/src/mainboard/google/dedede/variants/magolor/overridetree.cb b/src/mainboard/google/dedede/variants/magolor/overridetree.cb index f41e9fab6b..625546e7ff 100644 --- a/src/mainboard/google/dedede/variants/magolor/overridetree.cb +++ b/src/mainboard/google/dedede/variants/magolor/overridetree.cb @@ -25,18 +25,42 @@ chip soc/intel/jasperlake }, .i2c[0] = { .speed = I2C_SPEED_FAST, + .speed_config[0] = { + .speed = I2C_SPEED_FAST, + .scl_lcnt = 190, + .scl_hcnt = 100, + .sda_hold = 40, + } }, .i2c[1] = { .speed = I2C_SPEED_FAST, }, .i2c[2] = { .speed = I2C_SPEED_FAST, + .speed_config[0] = { + .speed = I2C_SPEED_FAST, + .scl_lcnt = 190, + .scl_hcnt = 100, + .sda_hold = 40, + } }, .i2c[3] = { .speed = I2C_SPEED_FAST, + .speed_config[0] = { + .speed = I2C_SPEED_FAST, + .scl_lcnt = 190, + .scl_hcnt = 100, + .sda_hold = 40, + } }, .i2c[4] = { .speed = I2C_SPEED_FAST, + .speed_config[0] = { + .speed = I2C_SPEED_FAST, + .scl_lcnt = 190, + .scl_hcnt = 100, + .sda_hold = 40, + } }, }"