[PATCH 6/7] ARM: dts: Add dts for Raspberry Pi 4 + Cirrus Logic Lochnagar2

Nicolas Saenz Julienne nsaenzjulienne at suse.de
Thu Oct 15 11:12:42 EDT 2020

On Thu, 2020-10-15 at 12:14 +0100, Richard Fitzgerald wrote:
> > Sadly I don't think creating a new device tree is a good solution here. If we
> > were to do so for every RPi hat/usage it'd become unmanageable very fast. There
> > is a way to maintain this in the open nonetheless. I suggest you build a DT
> > overlay and submit it to https://github.com/raspberrypi/linux, see
> > 'arch/arm/boot/dts/overlays.' The Raspberry Pi engineers have a kernel branch
> We want something in mainline so that it can be used by people
> developing on mainline and taken as a starting point for configuring
> the codecs for other host platforms. The RPi is a convenient platform to
> use as the base because it is widely available and low-cost.

If what you want to convey is the proper way of configuring your specific
device the way to go is writing a devicetree binding. See
Documentation/devicetree. It's even possible to validate a given devicetree
against the bindings (given they are written in yaml format).


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