linux-kernel - Re: [PATCH 07/12] MIPS: Malta: Probe RTC via DT

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Date:   Sat, 3 Sep 2016 15:15:36 +0300
From:   Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
To:     Paul Burton <paul.burton@...tec.com>, linux-mips@...ux-mips.org,
        Ralf Baechle <ralf@...ux-mips.org>
Cc:     devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>
Subject: Re: [PATCH 07/12] MIPS: Malta: Probe RTC via DT

Hello.

On 9/2/2016 6:48 PM, Paul Burton wrote:

> Add the DT node required to probe the RTC, and remove the platform code
> that was previously doing it.
>
> Signed-off-by: Paul Burton <paul.burton@...tec.com>
> ---
>
>  arch/mips/boot/dts/mti/malta.dts     | 15 +++++++++++++++
>  arch/mips/mti-malta/malta-platform.c | 21 ---------------------
>  2 files changed, 15 insertions(+), 21 deletions(-)
>
> diff --git a/arch/mips/boot/dts/mti/malta.dts b/arch/mips/boot/dts/mti/malta.dts
> index af765af..ee43296 100644
> --- a/arch/mips/boot/dts/mti/malta.dts
> +++ b/arch/mips/boot/dts/mti/malta.dts
> @@ -49,4 +49,19 @@
>  		interrupt-parent = <&gic>;
>  		interrupts = <GIC_SHARED 3 IRQ_TYPE_LEVEL_HIGH>;
>  	};
> +
> +	isa {
> +		compatible = "isa";
> +		#address-cells = <2>;
> +		#size-cells = <1>;
> +		ranges = <1 0 0 0x1000>;
> +
> +		rtc: mc146818@70 {

    Should be the other way around: you can use the chip name as a label, but 
you have to use the device class as a node name.

> +			compatible = "motorola,mc146818";
> +			reg = <1 0x70 0x8>;
> +
> +			interrupt-parent = <&i8259>;
> +			interrupts = <8>;
> +		};
> +	};
>  };
[...]

MBR, Sergei