From 9526c5dedaa6d4dac82dca1eb2def236f169b037 Mon Sep 17 00:00:00 2001 From: Karthikeyan Ramasubramanian Date: Thu, 3 Sep 2020 11:54:23 -0600 Subject: [PATCH] mb/google/dedede/var/waddledee: Configure I2C high and low time Configure the I2C bus high and low time for all enabled I2C buses. BUG=b:163743035 TEST=Measured the I2C bus frequency as 384 KHz, high time as 924 ns and low time as 1680 ns. Change-Id: I60a5f6814fb9818c724f6b6fe465ea49d0de0f97 Signed-off-by: Karthikeyan Ramasubramanian Reviewed-on: https://review.coreboot.org/c/coreboot/+/45083 Reviewed-by: Furquan Shaikh Reviewed-by: Tim Wawrzynczak Tested-by: build bot (Jenkins) --- .../dedede/variants/waddledee/overridetree.cb | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/src/mainboard/google/dedede/variants/waddledee/overridetree.cb b/src/mainboard/google/dedede/variants/waddledee/overridetree.cb index a538ecc24a..a525a0f2c5 100644 --- a/src/mainboard/google/dedede/variants/waddledee/overridetree.cb +++ b/src/mainboard/google/dedede/variants/waddledee/overridetree.cb @@ -21,18 +21,36 @@ 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, }, .i2c[4] = { .speed = I2C_SPEED_FAST, + .speed_config[0] = { + .speed = I2C_SPEED_FAST, + .scl_lcnt = 190, + .scl_hcnt = 100, + .sda_hold = 40, + } }, }"