ec/chromeec: Enable auto fan control on startup
Several older ChromeOS boards have issues with fan control on cold boot
and/or on S3 resume, so add functionality to allow those boards to
programmatically enable auto fan control.
TEST=build/boot google/link, verify fan ramps up/down accordingly with
CPU load.
Change-Id: I08a8562531f8af0c71230477d0221d536443f096
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/80712
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Caveh Jalali <caveh@chromium.org>
diff --git a/src/ec/google/chromeec/Kconfig b/src/ec/google/chromeec/Kconfig
index fb93b56..3b0beda 100644
--- a/src/ec/google/chromeec/Kconfig
+++ b/src/ec/google/chromeec/Kconfig
@@ -206,4 +206,10 @@
Fetch Second Source Factory Cache from CBI EEPROM and add it in the most significant
32 bits of firmware configuration.
+config EC_GOOGLE_CHROMEEC_AUTO_FAN_CTRL
+ depends on EC_GOOGLE_CHROMEEC
+ bool "Enable automatic fan control"
+ help
+ Put the fan in auto mode at boot.
+
source "src/ec/google/chromeec/*/Kconfig"
diff --git a/src/ec/google/chromeec/ec.c b/src/ec/google/chromeec/ec.c
index fbb0033..8fdfbfb 100644
--- a/src/ec/google/chromeec/ec.c
+++ b/src/ec/google/chromeec/ec.c
@@ -1181,6 +1181,11 @@
void google_chromeec_init(void)
{
google_chromeec_log_uptimeinfo();
+
+ /* Enable automatic fan control */
+ if (CONFIG(EC_GOOGLE_CHROMEEC_AUTO_FAN_CTRL)) {
+ ec_cmd_thermal_auto_fan_ctrl(PLAT_EC);
+ }
}
int google_ec_running_ro(void)