From a50f190fd4f9392f85bbeee53114cb054ad047cc Mon Sep 17 00:00:00 2001 From: Hao Chou Date: Thu, 1 Apr 2021 14:46:00 +0800 Subject: [PATCH] mb/google/volteer/variants/copano: Modify touch controller power sequence Based on the measurement, adjust the delay time between the main power rail and reset signal to 7ms in order to match the spec. of touch controller, eKTH7918U. BUG=b:184126265 BRANCH=firmware-volteer-13672.B TEST=build test firmware and verified by EE team. Change-Id: Iea84046c1b1f3fe6ab8bb89d86d00b1e89325f71 Signed-off-by: Hao Chou Reviewed-on: https://review.coreboot.org/c/coreboot/+/52015 Tested-by: build bot (Jenkins) Reviewed-by: Zhuohao Lee Reviewed-by: Zhuohao Lee Reviewed-by: Wayne3 Wang Reviewed-by: Nick Vaccaro --- src/mainboard/google/volteer/variants/copano/overridetree.cb | 1 + 1 file changed, 1 insertion(+) diff --git a/src/mainboard/google/volteer/variants/copano/overridetree.cb b/src/mainboard/google/volteer/variants/copano/overridetree.cb index b0a108e5c5..ec624d3f7a 100644 --- a/src/mainboard/google/volteer/variants/copano/overridetree.cb +++ b/src/mainboard/google/volteer/variants/copano/overridetree.cb @@ -142,6 +142,7 @@ chip soc/intel/tigerlake register "generic.reset_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_LOW(GPP_C10)" register "generic.enable_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPP_F16)" register "generic.reset_delay_ms" = "20" + register "generic.enable_delay_ms" = "7" register "generic.has_power_resource" = "1" register "generic.disable_gpio_export_in_crs" = "1" register "hid_desc_reg_offset" = "0x01"