From 11bf65caef5f786a00bc0c8913ccf6ef4dcd7932 Mon Sep 17 00:00:00 2001 From: Wisley Chen Date: Mon, 3 Oct 2022 15:34:20 +0600 Subject: mb/google/nissa/var/yaviks: Config I2C frequency MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Update parameters for all I2C devices. After applied this patch, the measured the I2C frequency meets spec BUG=b:249953708 TEST=FW_NAME=yaviks emerge-nissa coreboot flash and measure the all I2C devices 1. I2C0 (TPM): 980.6 Khz 2. I2C1 (TouchScreen); 392.6 Khz 3. I2C3 （Audio): 394.9 Khz 4. I2C5 (Touchpad): 391.6 Khz Signed-off-by: Wisley Chen Change-Id: I33c2891f17bc3c572bbfcbf30bbbdef9eb850ce7 Reviewed-on: https://review.coreboot.org/c/coreboot/+/68082 Tested-by: build bot (Jenkins) Reviewed-by: Reka Norman --- .../google/brya/variants/yaviks/overridetree.cb | 26 +++++++++++++++++++++- 1 file changed, 25 insertions(+), 1 deletion(-) diff --git a/src/mainboard/google/brya/variants/yaviks/overridetree.cb b/src/mainboard/google/brya/variants/yaviks/overridetree.cb index e30cc06e7b4c..bfee36017e83 100644 --- a/src/mainboard/google/brya/variants/yaviks/overridetree.cb +++ b/src/mainboard/google/brya/variants/yaviks/overridetree.cb @@ -40,16 +40,40 @@ chip soc/intel/alderlake register "common_soc_config" = "{ .i2c[0] = { .early_init = 1, - .speed = I2C_SPEED_FAST, + .speed = I2C_SPEED_FAST_PLUS, + .speed_config[0] = { + .speed = I2C_SPEED_FAST_PLUS, + .scl_lcnt = 56, + .scl_hcnt = 30, + .sda_hold = 7, + } }, .i2c[1] = { .speed = I2C_SPEED_FAST, + .speed_config[0] = { + .speed = I2C_SPEED_FAST, + .scl_lcnt = 158, + .scl_hcnt = 79, + .sda_hold = 7, + } }, .i2c[3] = { .speed = I2C_SPEED_FAST, + .speed_config[0] = { + .speed = I2C_SPEED_FAST, + .scl_lcnt = 158, + .scl_hcnt = 79, + .sda_hold = 7, + } }, .i2c[5] = { .speed = I2C_SPEED_FAST, + .speed_config[0] = { + .speed = I2C_SPEED_FAST, + .scl_lcnt = 158, + .scl_hcnt = 79, + .sda_hold = 7, + } }, }" -- cgit v1.2.3