From 2f8df88ced9cd224cb419ff51489c351fccfda4f Mon Sep 17 00:00:00 2001 From: Stanley Wu Date: Wed, 23 Dec 2020 20:26:57 +0800 Subject: [PATCH] mb/google/dedede/var/boten: 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: Stanley Wu Change-Id: I37403dd3ac3c9320398207d2111e1ddb73d6a130 Reviewed-on: https://review.coreboot.org/c/coreboot/+/48878 Tested-by: build bot (Jenkins) Reviewed-by: Marco Chen Reviewed-by: Paul Fagerburg Reviewed-by: Karthik Ramasubramanian --- .../dedede/variants/boten/overridetree.cb | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/src/mainboard/google/dedede/variants/boten/overridetree.cb b/src/mainboard/google/dedede/variants/boten/overridetree.cb index ab8fcdba29..e4f5e7b709 100644 --- a/src/mainboard/google/dedede/variants/boten/overridetree.cb +++ b/src/mainboard/google/dedede/variants/boten/overridetree.cb @@ -21,15 +21,33 @@ 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[4] = { .speed = I2C_SPEED_FAST, + .speed_config[0] = { + .speed = I2C_SPEED_FAST, + .scl_lcnt = 190, + .scl_hcnt = 100, + .sda_hold = 40, + } }, .i2c[5] = { .speed = I2C_SPEED_FAST,