Tim Wawrzynczak submitted this change.
drivers/uart/acpi: Update _S0W return value to D3hot
In order to support wake from D3cold, most devices require extra
circuitry and possibly out-of-band communications to the host.
Therefore, assume that most UARTs that do have wake capabilities support
wake from D3hot rather than D3cold.
BUG=b:187228954
TEST=compile
Change-Id: I24d6d0e81d980fc9c910d8f47f557c88990b6400
Signed-off-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/56834
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
---
M src/drivers/uart/acpi/acpi.c
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/src/drivers/uart/acpi/acpi.c b/src/drivers/uart/acpi/acpi.c
index d4b14aa..3081182 100644
--- a/src/drivers/uart/acpi/acpi.c
+++ b/src/drivers/uart/acpi/acpi.c
@@ -89,7 +89,7 @@
/* Wake capabilities */
if (config->wake) {
- acpigen_write_name_integer("_S0W", ACPI_DEVICE_SLEEP_D3_COLD);
+ acpigen_write_name_integer("_S0W", ACPI_DEVICE_SLEEP_D3_HOT);
acpigen_write_PRW(config->wake, SLP_TYP_S3);
};
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