[V4,0/4] ARM: Enable thermal support for Raspberry Pi 4

Message

Stefan Wahren Jan. 11, 2020, 4:15 p.m. UTC

This series enables thermal support for the Raspberry Pi 4. Neither the
bcm2835_thermal nor the brcmstb_thermal are suitable for the BCM2711.
So add a new thermal driver to read out the SoC temperature from the
AVS RO block of the BCM2711.

Changes in V4:
- change my email address to avoid spurious characters

Changes in V3:
- add Rob's, Florian's and Nicolas' reviewed-by/tested-by
- adjust binding license
- make error pointer handling consistent

Changes in V2:
- rebase on thermal/linux-next
- convert binding to YAML
- make AVS RO block a subnode of AVS monitor and access it via syscon
- drop unnecessary TSENS clock and get the rid of remove callback
- add Florian's reviewed-by to last/unchanged patch

Stefan Wahren (4):
  dt-bindings: Add Broadcom AVS RO thermal
  thermal: Add BCM2711 thermal driver
  ARM: dts: bcm2711: Enable thermal
  ARM: configs: Build BCM2711 thermal as module

 .../bindings/thermal/brcm,avs-ro-thermal.yaml      |  45 +++++++
 arch/arm/boot/dts/bcm2711.dtsi                     |  12 ++
 arch/arm/configs/multi_v7_defconfig                |   1 +
 arch/arm64/configs/defconfig                       |   1 +
 drivers/thermal/broadcom/Kconfig                   |   7 ++
 drivers/thermal/broadcom/Makefile                  |   1 +
 drivers/thermal/broadcom/bcm2711_thermal.c         | 129 +++++++++++++++++++++
 7 files changed, 196 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/thermal/brcm,avs-ro-thermal.yaml
 create mode 100644 drivers/thermal/broadcom/bcm2711_thermal.c