linux-kernel - Re: [PATCH v12 6/9] ARM: dts: exynos: add chipid label and syscon compatible

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Date:   Wed, 24 Jul 2019 19:10:49 +0200
From:   Krzysztof Kozlowski <krzk@...nel.org>
To:     Lukasz Luba <l.luba@...tner.samsung.com>
Cc:     devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-pm@...r.kernel.org, linux-samsung-soc@...r.kernel.org,
        linux-clk@...r.kernel.org, mturquette@...libre.com,
        sboyd@...nel.org, b.zolnierkie@...sung.com, kgene@...nel.org,
        mark.rutland@....com, robh+dt@...nel.org, cw00.choi@...sung.com,
        kyungmin.park@...sung.com, m.szyprowski@...sung.com,
        s.nawrocki@...sung.com, myungjoo.ham@...sung.com,
        keescook@...omium.org, tony@...mide.com, jroedel@...e.de,
        treding@...dia.com, digetx@...il.com, gregkh@...uxfoundation.org,
        willy.mh.wolff.ml@...il.com
Subject: Re: [PATCH v12 6/9] ARM: dts: exynos: add chipid label and syscon
 compatible

On Mon, Jul 22, 2019 at 11:46:43AM +0200, Lukasz Luba wrote:
> Add the chipid label which allows to use it in phandle from other device.
> Use syscon in compatible to get the regmap of the device register set.
> The chipid is used in DMC during initialization to compare compatibility.
> 

I cannot find its usage in DMC driver.

Best regards,
Krzysztof


> Signed-off-by: Lukasz Luba <l.luba@...tner.samsung.com>
> ---
>  arch/arm/boot/dts/exynos5.dtsi | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/arch/arm/boot/dts/exynos5.dtsi b/arch/arm/boot/dts/exynos5.dtsi
> index 67f9b4504a42..4801ca759feb 100644
> --- a/arch/arm/boot/dts/exynos5.dtsi
> +++ b/arch/arm/boot/dts/exynos5.dtsi
> @@ -35,8 +35,8 @@
>  		#size-cells = <1>;
>  		ranges;
>  
> -		chipid@...00000 {
> -			compatible = "samsung,exynos4210-chipid";
> +		chipid: chipid@...00000 {
> +			compatible = "samsung,exynos4210-chipid", "syscon";
>  			reg = <0x10000000 0x100>;
>  		};
>  
> -- 
> 2.17.1
>