Commit 74a0caa5 authored Jun 15, 2020 by Maxime Ripard Committed by Stephen Boyd Jun 19, 2020

dt-bindings: clock: Add a binding for the RPi Firmware clocks

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 <mturquette@baylibre.com>
Cc: linux-clk@vger.kernel.org
Cc: devicetree@vger.kernel.org
Reviewed-by: Stephen Boyd <sboyd@kernel.org>
Reviewed-by: Rob Herring <robh+dt@kernel.org>
Tested-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://lore.kernel.org/r/f6105207e7ef5a5ea8d7a1774faf989d341a25f5.1592210452.git-series.maxime@cerno.tech

Signed-off-by: Stephen Boyd <sboyd@kernel.org>

parent d4c708c0

Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-firmware.yaml

+24 −0

Original line number	Diff line number	Diff line
		@@ -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.

		required:
		- compatible
		- "#clock-cells"

		additionalProperties: false

		required:
		- compatible
		- mboxes
		@@ -31,5 +50,10 @@ examples:
		firmware {
		compatible = "raspberrypi,bcm2835-firmware", "simple-bus";
		mboxes = <&mailbox>;

		firmware_clocks: clocks {
		compatible = "raspberrypi,firmware-clocks";
		#clock-cells = <1>;
		};
		};
		...

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