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 <mturquette@xxxxxxxxxxxx>
> Cc: Stephen Boyd <sboyd@xxxxxxxxxx>
> Cc: Rob Herring <robh+dt@xxxxxxxxxx>
> Cc: linux-clk@xxxxxxxxxxxxxxx
> Cc: devicetree@xxxxxxxxxxxxxxx
> Signed-off-by: Maxime Ripard <maxime@xxxxxxxxxx>
> ---
> 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.
> +
> + 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>;
> + };
> };
> ...
> --
> git-series 0.9.1
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