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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 <hao_chou@pegatron.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/52015
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Zhuohao Lee <zhuohao@chromium.org>
Reviewed-by: Zhuohao Lee <zhuohao@google.com>
Reviewed-by: Wayne3 Wang <wayne3_wang@pegatron.corp-partner.google.com>
Reviewed-by: Nick Vaccaro <nvaccaro@google.com>
This commit is contained in:
Hao Chou 2021-04-01 14:46:00 +08:00 committed by Patrick Georgi
parent a37c8021a6
commit a50f190fd4
1 changed files with 1 additions and 0 deletions
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src/mainboard/google/volteer/variants/copano/overridetree.cb
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@ -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"