On Mon, Jul 08, 2024 at 06:14:01PM +0200, Stefan Wahren wrote: > Hi Jonathan, > > Am 08.07.24 um 01:08 schrieb Jonathan Neuschäfer: > > Raspberry Pi boards have a "revision code", documented here: > > > > https://www.raspberrypi.com/documentation/computers/raspberry-pi.html#new-style-revision-codes > AFAIK these revision codes mostly refer to the board and not to the CPU. True. > The abuse of /proc/cpuinfo has been rejected in the past and from my > understanding this applies also in this case. Alright > > 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 > This is a bad example because the application doesn't really care about > the kernel and directly access the hardware registers via /dev/mem. A > proper application would use the dedicated userspace API (GPIO Character > Device or PWM). Right > I would bet that the application does not work with the Raspberry Pi 5. Probably, yeah. Jonathan
