diff options
| author | Jeremy Linton <jeremy.linton@arm.com> | 2020-08-31 12:25:46 -0500 |
|---|---|---|
| committer | Ard Biesheuvel <ard.biesheuvel@arm.com> | 2020-09-01 15:11:30 +0300 |
| commit | ee550dd7f240e5eae13a1a37e679a9df3d154681 (patch) | |
| tree | 7c68fff711ac03318d3dc31fbd7fca06254f6512 /Platform/RaspberryPi/RPi3 | |
| parent | e372412acf3d8d0147f57464c84f8031f41282af (diff) | |
Platform/RaspberryPi: Add entry for user fan control
Add a menu item that allows the user to enable GPIO based
fan control via SSDT and the previous NameObj replacement
commit. This should only be seen/enabled on RPI4
because that is what its been tested with.
Given GPIO pin current limitations its likely that a bit of
additional circuitry is required to drive a fan, and the GPIO
high/low signal can only be used as a enable/disable signal. A
search for "rpi npn gpio fan" or similar should turn up some
hits for how to do this. Alternatively there are some commercial
boards (FAN SHIM) which operate via simple GPIO control.
Signed-off-by: Jeremy Linton <jeremy.linton@arm.com>
Reviewed-by: Pete Batard <pete@akeo.ie>
Diffstat (limited to 'Platform/RaspberryPi/RPi3')
| -rw-r--r-- | Platform/RaspberryPi/RPi3/RPi3.dsc | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/Platform/RaspberryPi/RPi3/RPi3.dsc b/Platform/RaspberryPi/RPi3/RPi3.dsc index 0998d836..cef8932c 100644 --- a/Platform/RaspberryPi/RPi3/RPi3.dsc +++ b/Platform/RaspberryPi/RPi3/RPi3.dsc @@ -499,6 +499,11 @@ gRaspberryPiTokenSpaceGuid.PcdSystemTableMode|L"SystemTableMode"|gConfigDxeFormSetGuid|0x0|1
#
+ # Enable a fan in the ACPI thermal zone on GPIO pin #
+ #
+ gRaspberryPiTokenSpaceGuid.PcdFanOnGpio|L"FanOnGpio"|gConfigDxeFormSetGuid|0x0|0
+
+ #
# Common UEFI ones.
#
|