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mb/google/nissa/var/anraggar: Update touchscreen enable pin to GPP_C0

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Assign GPP_C0 and enable only the touchscreen. Before modification,
GPP_C0 supplies power to the touchscreen and sensor at the same time.
Now the hardware circuit has been modified, GPP_C0 supplies power to the
touchscreen alone. After the software is synchronously modified, when
the device enters suspend(S0ix), GPP_C0 will not enable VDD, which can
reduce the standby power consumption of the touchscreen when it is
suspended(S0ix), which is about 2.1mW.

BUG=b:304920262
TEST= touchscreen function workable

Change-Id: Ia06209aa8303be4fc0669c5d6e5d7a06e8e9ab99
Signed-off-by: Qinghong Zeng <zengqinghong@huaqin.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/81265
Reviewed-by: Eric Lai <ericllai@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Weimin Wu <wuweimin@huaqin.corp-partner.google.com>
This commit is contained in:
Qinghong Zeng 2024-03-16 15:13:17 +08:00 committed by Felix Held
parent e8f9d18e88
commit b417cb88df
1 changed files with 1 additions and 1 deletions
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src/mainboard/google/brya/variants/anraggar/overridetree.cb
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@ -239,7 +239,7 @@ chip soc/intel/alderlake
register "generic.detect" = "1" register "generic.detect" = "1"
register "generic.reset_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_LOW(GPP_C1)" register "generic.reset_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_LOW(GPP_C1)"
register "generic.reset_delay_ms" = "200" register "generic.reset_delay_ms" = "200"
register "generic.enable_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPP_C6)" register "generic.enable_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPP_C0)"
register "generic.enable_delay_ms" = "12" register "generic.enable_delay_ms" = "12"
register "generic.stop_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_LOW(GPP_C6)" register "generic.stop_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_LOW(GPP_C6)"
register "generic.stop_off_delay_ms" = "200" register "generic.stop_off_delay_ms" = "200"