linux-kernel - Re: [PATCH 6/6] arm64: dts: marvell: Add cpu clock node on Armada 7K/8K

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Date:   Fri, 12 Oct 2018 10:42:16 -0700
From:   Stephen Boyd <sboyd@...nel.org>
To:     Gregory CLEMENT <gregory.clement@...tlin.com>,
        Mike Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...eaurora.org>, linux-clk@...r.kernel.org,
        linux-kernel@...r.kernel.org, Rob Herring <robh+dt@...nel.org>
Cc:     Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
        linux-arm-kernel@...ts.infradead.org,
        Jason Cooper <jason@...edaemon.net>,
        Andrew Lunn <andrew@...n.ch>,
        Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
        Gregory CLEMENT <gregory.clement@...tlin.com>,
        Antoine Tenart <antoine.tenart@...tlin.com>,
        Miquèl Raynal <miquel.raynal@...tlin.com>,
        Maxime Chevallier <maxime.chevallier@...tlin.com>
Subject: Re: [PATCH 6/6] arm64: dts: marvell: Add cpu clock node on Armada 7K/8K

+Rob

Quoting Gregory CLEMENT (2018-09-22 11:17:09)
> diff --git a/arch/arm64/boot/dts/marvell/armada-ap806.dtsi b/arch/arm64/boot/dts/marvell/armada-ap806.dtsi
> index 4a65e4e830aa..27c840e91abe 100644
> --- a/arch/arm64/boot/dts/marvell/armada-ap806.dtsi
> +++ b/arch/arm64/boot/dts/marvell/armada-ap806.dtsi
> @@ -280,6 +280,12 @@
>                                 #address-cells = <1>;
>                                 #size-cells = <1>;
>  
> +                               cpu_clk: clock-cpu {
> +                                       compatible = "marvell,ap806-cpu-clock";
> +                                       clocks = <&ap_clk 0>, <&ap_clk 1>;
> +                                       #clock-cells = <1>;
> +                               };

This looks like the wrong place because there isn't a reg property. It
should go to the root of the tree. And then it looks like we're adding
something to DT to get a driver to probe, which is improper DT design.