mb/google/volteer: Use runtime detection for touchscreens
Now that power sequencing has been implemented, switch from using ACPI
"probed" flag to "detect" flag for all i2c touchscreens. This removes
non-present devices from the SSDT and relieves the OS of the burden of
probing.
BUG=b:121309055
TEST=build/boot Windows/linux on multiple volteer variants, verify all
touchscreens functional in OS, dump ACPI and verify only i2c devices
actually present on the board have entries in the SSDT.
Change-Id: I0448d12a36f522b715e1fbeb8d37eb5a925ebc93
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/71183
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/mainboard/google/volteer/variants/lindar/overridetree.cb b/src/mainboard/google/volteer/variants/lindar/overridetree.cb
index a3003a7..27d37f7 100644
--- a/src/mainboard/google/volteer/variants/lindar/overridetree.cb
+++ b/src/mainboard/google/volteer/variants/lindar/overridetree.cb
@@ -212,7 +212,7 @@
register "generic.hid" = ""GDIX0000""
register "generic.desc" = ""Goodix Touchscreen""
register "generic.irq" = "ACPI_IRQ_LEVEL_LOW(GPP_E7_IRQ)"
- register "generic.probed" = "1"
+ register "generic.detect" = "1"
register "generic.reset_gpio" =
"ACPI_GPIO_OUTPUT_ACTIVE_LOW(GPP_C10)"
# Parameter T5 >= 180ms
@@ -233,7 +233,7 @@
register "hid" = ""ELAN0001""
register "desc" = ""ELAN Touchscreen""
register "irq" = "ACPI_IRQ_LEVEL_LOW(GPP_E7_IRQ)"
- register "probed" = "1"
+ register "detect" = "1"
register "reset_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_LOW(GPP_C10)"
register "reset_delay_ms" = "20"
register "enable_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPP_A8)"