linux-kernel - Re: [PATCH v6 1/6] dt-bindings: ap806: add the cluster clock node in the syscon file

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Date:   Tue, 25 Jun 2019 10:38:24 +0200
From:   Gregory CLEMENT <gregory.clement@...tlin.com>
To:     Rob Herring <robh+dt@...nel.org>
Cc:     Stephen Boyd <sboyd@...nel.org>,
        Mike Turquette <mturquette@...libre.com>,
        linux-clk@...r.kernel.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, Jason Cooper <jason@...edaemon.net>,
        Andrew Lunn <andrew@...n.ch>,
        Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
        Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
        linux-arm-kernel@...ts.infradead.org,
        Antoine Tenart <antoine.tenart@...tlin.com>,
        Miquèl Raynal <miquel.raynal@...tlin.com>,
        Maxime Chevallier <maxime.chevallier@...tlin.com>
Subject: Re: [PATCH v6 1/6] dt-bindings: ap806: add the cluster clock node in the syscon file

Hello Rob,

> Document the device tree binding for the cluster clock controllers found
> in the Armada 7K/8K SoCs.
>
> Signed-off-by: Gregory CLEMENT <gregory.clement@...tlin.com>

Did you have the opportunity to have a look on this binding ? I think
that I completely follow your requirement now.

Thanks,

Gregory

> ---
>  .../arm/marvell/ap806-system-controller.txt   | 25 +++++++++++++++++++
>  1 file changed, 25 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/arm/marvell/ap806-system-controller.txt b/Documentation/devicetree/bindings/arm/marvell/ap806-system-controller.txt
> index 7b8b8eb0191f..4a3bb9c12312 100644
> --- a/Documentation/devicetree/bindings/arm/marvell/ap806-system-controller.txt
> +++ b/Documentation/devicetree/bindings/arm/marvell/ap806-system-controller.txt
> @@ -143,3 +143,28 @@ ap_syscon1: system-controller@...000 {
>  		#thermal-sensor-cells = <1>;
>  	};
>  };
> +
> +Cluster clocks:
> +---------------
> +
> +Device Tree Clock bindings for cluster clock of AP806 Marvell. Each
> +cluster contain up to 2 CPUs running at the same frequency.
> +
> +Required properties:
> +- compatible: must be  "marvell,ap806-cpu-clock";
> +- #clock-cells : should be set to 1.
> +- clocks : shall be the input parents clock phandle for the clock.
> +- reg: register range associated with the cluster clocks
> +
> +
> +ap_syscon1: system-controller@...000 {
> +	compatible = "marvell,armada-ap806-syscon1", "syscon", "simple-mfd";
> +	reg = <0x6f8000 0x1000>;
> +
> +	cpu_clk: clock-cpu@0 {
> +		compatible = "marvell,ap806-cpu-clock";
> +		clocks = <&ap_clk 0>, <&ap_clk 1>;
> +		#clock-cells = <1>;
> +		reg = <0x274 0xa30>;
> +	};
> +};
> -- 
> 2.20.1
>

-- 
Gregory Clement, Bootlin
Embedded Linux and Kernel engineering
http://bootlin.com