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@xxxxxxx> --- 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@xxxxxxx>
