Hi Rob, On Mon, May 11, 2020 at 04:47:27PM -0500, Rob Herring wrote: > On Fri, Apr 24, 2020 at 05:33:44PM +0200, Maxime Ripard wrote: > > The firmware running on the RPi VideoCore can be used to discover and > > change the various clocks running in the BCM2711. Since devices will > > need to use them through the DT, let's add a pretty simple binding. > > > > Cc: Michael Turquette <mturque...@baylibre.com> > > Cc: Stephen Boyd <sb...@kernel.org> > > Cc: Rob Herring <robh...@kernel.org> > > Cc: linux-...@vger.kernel.org > > Cc: devicet...@vger.kernel.org > > Signed-off-by: Maxime Ripard <max...@cerno.tech> > > --- > > > > Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-firmware.yaml > > | 24 ++++++++++++++++++++++++ > > 1 file changed, 24 insertions(+) > > > > diff --git > > a/Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-firmware.yaml > > > > b/Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-firmware.yaml > > index cec540c052b6..b48ed875eb8e 100644 > > --- > > a/Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-firmware.yaml > > +++ > > b/Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-firmware.yaml > > @@ -22,6 +22,25 @@ properties: > > Phandle to the firmware device's Mailbox. > > (See: ../mailbox/mailbox.txt for more information) > > > > + clocks: > > + type: object > > + > > + properties: > > + compatible: > > + const: raspberrypi,firmware-clocks > > + > > + "#clock-cells": > > + const: 1 > > + description: > > > + The argument is the ID of the clocks contained by the > > + firmware messages. > > Not really any reason to make this a child node. The parent can be a > clock provider.
This was meant to provide some consistency for that driver. It already has a nod for the GPIOs exposed through the firmware in the RPi where you could make the exact same argument, so I guess that, while we shouldn't make the same choices if we had to design it from scratch, it's more important to keep the same design choices for a given binding? Maxime
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