On Tue, Jun 06, 2023 at 04:37:08PM +0200, Linus Walleij wrote: > On Fri, Jun 2, 2023 at 2:22 PM Mark Brown <broonie@xxxxxxxxxx> wrote: > > On Fri, Jun 02, 2023 at 01:52:00PM +0200, Matthias Schiffer wrote: > > > > We have seen a number of downstream patches that allow enabling the > > > realtime feature of the SPI subsystem to reduce latency. These were > > > usually implemented for a specific SPI driver, even though the actual > > > handling of the rt flag is happening in the generic SPI controller code. > > > > > > Introduce a generic linux,use-rt-queue flag that can be used with any > > > controller driver. The now redundant driver-specific pl022,rt flag is > > > marked as deprecated. > > > > This is clearly OS specific tuning so out of scope for DT... > > In a sense, but to be fair anything prefixed linux,* is out of scope for DT, > Documentation/devicetree/bindings/input/matrix-keymap.yaml being > the most obvious offender. > > On the other hand I think the DT maintainers said it is basically fine > to use undocumented DT properties for this kind of thing. Having > completely undocumented DT properties might seem evil in another > sense, but I think Apple does nothing but... I don't don't know where you got that impression. I'm fine with them in the sense that I don't look at downstream and anything goes there. Rob
