linux-kernel - Re: [PATCH] arm64: dts: sdm845: Add videocc node

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Date:   Mon, 26 Nov 2018 16:35:50 -0800
From:   Doug Anderson <dianders@...omium.org>
To:     Taniya Das <tdas@...eaurora.org>,
        Andy Gross <andy.gross@...aro.org>
Cc:     Stephen Boyd <sboyd@...nel.org>,
        Michael Turquette <mturquette@...libre.com>,
        David Brown <david.brown@...aro.org>,
        Rajendra Nayak <rnayak@...eaurora.org>,
        linux-arm-msm <linux-arm-msm@...r.kernel.org>,
        "open list:ARM/QUALCOMM SUPPORT" <linux-soc@...r.kernel.org>,
        linux-clk <linux-clk@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>, devicetree@...r.kernel.org,
        Rob Herring <robh@...nel.org>
Subject: Re: [PATCH] arm64: dts: sdm845: Add videocc node

Hi,

On Mon, Nov 5, 2018 at 2:35 AM Taniya Das <tdas@...eaurora.org> wrote:
>
> This adds the video clock controller node to sdm845 based on the examples
> in the bindings.
>
> Signed-off-by: Taniya Das <tdas@...eaurora.org>
> ---
>  arch/arm64/boot/dts/qcom/sdm845.dtsi | 8 ++++++++
>  1 file changed, 8 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/qcom/sdm845.dtsi b/arch/arm64/boot/dts/qcom/sdm845.dtsi
> index b72bdb0..91a281b 100644
> --- a/arch/arm64/boot/dts/qcom/sdm845.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sdm845.dtsi
> @@ -8,6 +8,7 @@
>  #include <dt-bindings/clock/qcom,dispcc-sdm845.h>
>  #include <dt-bindings/clock/qcom,gcc-sdm845.h>
>  #include <dt-bindings/clock/qcom,rpmh.h>
> +#include <dt-bindings/clock/qcom,videocc-sdm845.h>
>  #include <dt-bindings/interrupt-controller/arm-gic.h>
>  #include <dt-bindings/phy/phy-qcom-qusb2.h>
>  #include <dt-bindings/reset/qcom,sdm845-aoss.h>
> @@ -1256,6 +1257,13 @@
>                         #power-domain-cells = <1>;
>                 };
>
> +               videocc: clock-controller@...0000 {
> +                       compatible = "qcom,sdm845-videocc";
> +                       reg = <0xab00000 0x10000>;
> +                       #clock-cells = <1>;
> +                       #power-domain-cells = <1>;

Any reason not to include "#reset-cells = <1>;" here?  The bindings
list it as optional but I see no reason why we should leave it off.
The file "include/dt-bindings/clock/qcom,videocc-sdm845.h" seems to
include some #defines for resets.  Even though the driver doesn't seem
like it supports it yet, it still should be fine to list it here.


> +               };
> +
>                 tsens0: thermal-sensor@...3000 {

Please sort your new node by unit address.  Specifically "ab00000"
comes before "af00000", thus I would expect you to have your node
right before the dispcc.


-Doug