From 8e2567c7a95f11f159c90aa118f0fff096fcf3d3 Mon Sep 17 00:00:00 2001 From: Hualin Wei Date: Tue, 4 Nov 2025 16:23:52 +0800 Subject: [PATCH] mb/google/fatcat/var/lapis: Adjust touchpad I2C frequency Adjust the touchpad I2C frequency to greater than 380 kHz and less than 400 kHz. Before: THC0-I2C - 368KHz After: THC0-T2C - 388KHz BUG=b:456906446 TEST=Rate of the actual measured machine is pass. Change-Id: I389a1b0f56494694f1d96aa036fd41dff476c074 Signed-off-by: Hualin Wei Reviewed-on: https://review.coreboot.org/c/coreboot/+/89889 Tested-by: build bot (Jenkins) Reviewed-by: Weimin Wu Reviewed-by: Pranava Y N Reviewed-by: Subrata Banik --- src/mainboard/google/fatcat/variants/lapis/overridetree.cb | 2 ++ 1 file changed, 2 insertions(+) diff --git a/src/mainboard/google/fatcat/variants/lapis/overridetree.cb b/src/mainboard/google/fatcat/variants/lapis/overridetree.cb index c686dd4da2..3c47b7f597 100644 --- a/src/mainboard/google/fatcat/variants/lapis/overridetree.cb +++ b/src/mainboard/google/fatcat/variants/lapis/overridetree.cb @@ -417,6 +417,8 @@ chip soc/intel/pantherlake register "mode" = "THC_HID_I2C_MODE" register "dev_hidi2c.intf.hidi2c.addr" = "0x15" register "dev_hidi2c.intf.hidi2c.descriptor_address" = "0x01" + register "soc_hidi2c.fm_scl_low_period" = "160" + register "soc_hidi2c.fm_scl_high_period" = "146" register "wake_on_touch" = "true" # NOTE: Use GpioInt() in _CRS and does not use GPE. register "wake_gpio" = "ACPI_GPIO_IRQ_LEVEL_LOW_WAKE(GPP_VGPIO3_THC0)"