linux-kernel - Re: [PATCH 06/89] dt-bindings: clock: Add a binding for the RPi Firmware clocks

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Date:   Tue, 25 Feb 2020 12:16:54 -0600
From:   Rob Herring <robh@...nel.org>
To:     Maxime Ripard <maxime@...no.tech>
Cc:     Nicolas Saenz Julienne <nsaenzjulienne@...e.de>,
        Eric Anholt <eric@...olt.net>, devicetree@...r.kernel.org,
        Tim Gover <tim.gover@...pberrypi.com>,
        Dave Stevenson <dave.stevenson@...pberrypi.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Michael Turquette <mturquette@...libre.com>,
        linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        linux-clk@...r.kernel.org, bcm-kernel-feedback-list@...adcom.com,
        linux-rpi-kernel@...ts.infradead.org,
        Phil Elwell <phil@...pberrypi.com>,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 06/89] dt-bindings: clock: Add a binding for the RPi
 Firmware clocks

On Mon, Feb 24, 2020 at 10:06:08AM +0100, Maxime Ripard wrote:
> The firmare 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@...libre.com>
> Cc: Stephen Boyd <sboyd@...nel.org>
> Cc: Rob Herring <robh+dt@...nel.org>
> Cc: linux-clk@...r.kernel.org
> Cc: devicetree@...r.kernel.org
> Signed-off-by: Maxime Ripard <maxime@...no.tech>
> ---
>  Documentation/devicetree/bindings/clock/raspberrypi,firmware-clocks.yaml | 39 +++++++++++++++++++++++++++++++++++++++
>  1 file changed, 39 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/clock/raspberrypi,firmware-clocks.yaml
> 
> diff --git a/Documentation/devicetree/bindings/clock/raspberrypi,firmware-clocks.yaml b/Documentation/devicetree/bindings/clock/raspberrypi,firmware-clocks.yaml
> new file mode 100644
> index 000000000000..d37bc311321d
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/clock/raspberrypi,firmware-clocks.yaml
> @@ -0,0 +1,39 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/clock/raspberrypi,firmware-clocks.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: RaspberryPi Firmware Clocks Device Tree Bindings
> +
> +maintainers:
> +  - Maxime Ripard <mripard@...nel.org>
> +
> +properties:
> +  "#clock-cells":
> +    const: 1
> +
> +  compatible:
> +    const: raspberrypi,firmware-clocks
> +
> +  raspberrypi,firmware:
> +    $ref: /schemas/types.yaml#/definitions/phandle
> +    description: >
> +      Phandle to the mailbox node to communicate with the firmware.

Can't this be a child node of the phandle instead? Or just add 
'#clock-cells' to the firmware node.

> +
> +required:
> +  - "#clock-cells"
> +  - compatible
> +  - raspberrypi,firmware
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    firmware_clocks: firmware-clocks {
> +        compatible = "raspberrypi,firmware-clocks";
> +        raspberrypi,firmware = <&firmware>;
> +        #clock-cells = <1>;
> +    };
> +
> +...
> -- 
> git-series 0.9.1
> 
> _______________________________________________
> linux-arm-kernel mailing list
> linux-arm-kernel@...ts.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

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