linux-kernel - Re: [RFC PATCH 3/6] ARM64: dts: exynos5433: add the pcie

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Message-ID: <20161227161134.ds67t5byucphwkjg@kozik-lap>
Date:   Tue, 27 Dec 2016 18:11:34 +0200
From:   Krzysztof Kozlowski <krzk@...nel.org>
To:     Jaehoon Chung <jh80.chung@...sung.com>
Cc:     linux-pci@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-samsung-soc@...r.kernel.org,
        bhelgaas@...gle.com, robh+dt@...nel.org, mark.rutland@....com,
        kgene@...nel.org, krzk@...nel.org, javier@....samsung.com,
        kishon@...com, will.deacon@....com, catalin.marinas@....com,
        cpgs@...sung.com
Subject: Re: [RFC PATCH 3/6] ARM64: dts: exynos5433: add the pcie_phy node
 for PCIe

On Mon, Dec 26, 2016 at 02:20:26PM +0900, Jaehoon Chung wrote:
> To use the generic PHY framework, adds the pcie_phy node.
> 
> Signed-off-by: Jaehoon Chung <jh80.chung@...sung.com>
> ---
>  arch/arm64/boot/dts/exynos/exynos5433.dtsi | 14 ++++++++++++++
>  1 file changed, 14 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/exynos/exynos5433.dtsi b/arch/arm64/boot/dts/exynos/exynos5433.dtsi
> index 64226d5..2a15f18 100644
> --- a/arch/arm64/boot/dts/exynos/exynos5433.dtsi
> +++ b/arch/arm64/boot/dts/exynos/exynos5433.dtsi
> @@ -805,6 +805,11 @@
>  			reg = <0x145f0000 0x1038>;
>  		};
>  
> +		syscon_fsys: syscon@...f0000 {
> +			compatible = "syscon";
> +			reg = <0x156f0000 0x1044>;
> +		};
> +
>  		gsc_0: video-scaler@...00000 {
>  			compatible = "samsung,exynos5433-gsc";
>  			reg = <0x13c00000 0x1000>;
> @@ -1443,6 +1448,15 @@
>  				status = "disabled";
>  			};
>  		};
> +
> +		pcie_phy: pcie-phy@...80000 {
> +			#phy-cells = <0>;
> +			compatible = "samsung,exynos5433-pcie-phy";

Mostly we use the convention of compatible being first property.

> +			reg = <0x15680000 0x1000>;
> +			samsung,pmureg-phandle = <&pmu_system_controller>;
> +			samsung,fsys-sysreg = <&syscon_fsys>;
> +			status = "okay";

Why do you need to put status=okay here?

Best regards,
Krzysztof

> +		};
>  	};
>  
>  	timer: timer {
> -- 
> 2.10.2
>