[PATCH 0/2] ARM: Expose Raspberry Pi revision code in /proc/cpuinfo

[Jonathan Neuschäfer]

Raspberry Pi boards have a "revision code", documented here:

  https://www.raspberrypi.com/documentation/computers/raspberry-pi.html#new-style-revision-codes

This patch copies what the downstream kernel does and reads it from the
devicetree property /system/linux,revision. This enables some software
to work as intended on mainline kernels:

  https://github.com/hzeller/rpi-rgb-led-matrix/blob/a3eea997a9254b83ab2de97ae80d83588f696387/lib/gpio.cc#L247

Signed-off-by: Jonathan Neuschäfer <j.neuschaefer at gmx.net>
---
Jonathan Neuschäfer (2):
      dt-bindings: arm: bcm2835: Specify /system/linux,revision property
      ARM: bcm2835: Detect system revision

 Documentation/devicetree/bindings/arm/bcm/bcm2835.yaml | 12 ++++++++++++
 arch/arm/mach-bcm/board_bcm2835.c                      | 11 +++++++++++
 2 files changed, 23 insertions(+)
---
base-commit: 22a40d14b572deb80c0648557f4bd502d7e83826
change-id: 20240707-raspi-revision-84dffdfaebce

Best regards,
--
Jonathan Neuschäfer <j.neuschaefer at gmx.net>