[edk2-devel] [PATCH 0/3] Platform/RasberryPi: Thermal zone

[Jeremy Linton]

This set creates a basic thermal zone, which reads the
SOC temp via a direct register read in AML. It also
adds an active cooling policy using a GPIO pin for fan
control that can optionally be enabled/disabled by the
user from the BDS.

With the fan enabled it should be possible to see the
soc temp like:

# sensors
acpitz-acpi-0
Adapter: ACPI interface
temp1:        +57.6C  (crit = +90.0C)

and the fan state may be read/cycled with:

/sys/bus/acpi/devices/PNP0C06:00/PNP0C0B:00/physical_node/thermal_cooling/cur_state

Cc: Leif Lindholm <leif at nuviainc.com>
Cc: Pete Batard <pete at akeo.ie>
Cc: Andrei Warkentin <awarkentin at vmware.com>
Cc: Ard Biesheuvel <ard.biesheuvel at arm.com>
Cc: Samer El-Haj-Mahmoud <Samer.El-Haj-Mahmoud at arm.com>

Jeremy Linton (3):
  Platform/RaspberryPi4: Add a basic thermal zone
  Platform/RaspberryPi4: Create ACPI fan object
  Platform/RaspberryPi: Add entry for user fan control

 Platform/RaspberryPi/AcpiTables/Dsdt.asl           | 31 ++++++++
 Platform/RaspberryPi/Drivers/ConfigDxe/ConfigDxe.c | 55 ++++++++++++++
 .../RaspberryPi/Drivers/ConfigDxe/ConfigDxe.inf    |  3 +
 .../RaspberryPi/Drivers/ConfigDxe/ConfigDxeHii.uni |  5 ++
 .../RaspberryPi/Drivers/ConfigDxe/ConfigDxeHii.vfr | 17 +++++
 .../RaspberryPi/Drivers/ConfigDxe/SsdtThermal.asl  | 83 ++++++++++++++++++++++
 Platform/RaspberryPi/Include/ConfigVars.h          |  4 ++
 Platform/RaspberryPi/RPi3/RPi3.dsc                 |  5 ++
 Platform/RaspberryPi/RPi4/RPi4.dsc                 |  8 +++
 Platform/RaspberryPi/RaspberryPi.dec               |  1 +
 .../Bcm27xx/Include/IndustryStandard/Bcm2711.h     |  2 +
 11 files changed, 214 insertions(+)
 create mode 100644 Platform/RaspberryPi/Drivers/ConfigDxe/SsdtThermal.asl

-- 
2.13.7


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