linux-kernel - Re: [PATCH 1/2] arm64: dts: add Spreadtrum's fm support

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Date:   Tue, 4 Jul 2017 13:35:11 +0100
From:   Mark Rutland <mark.rutland@....com>
To:     Chunyan Zhang <chunyan.zhang@...eadtrum.com>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Arnd Bergmann <arnd@...db.de>, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        Songhe Wei <songhe.wei@...eadtrum.com>,
        Zhongping Tan <zhongping.tan@...eadtrum.com>,
        Orson Zhai <orson.zhai@...eadtrum.com>,
        Chunyan Zhang <zhang.lyra@...il.com>
Subject: Re: [PATCH 1/2] arm64: dts: add Spreadtrum's fm support

On Tue, Jul 04, 2017 at 06:15:07PM +0800, Chunyan Zhang wrote:
> Added FM support for Spreadtrum's SP9860 board.
> 
> Signed-off-by: Songhe Wei <songhe.wei@...eadtrum.com>
> Signed-off-by: Chunyan Zhang <chunyan.zhang@...eadtrum.com>
> ---
>  arch/arm64/boot/dts/sprd/sp9860g-1h10.dts | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/sprd/sp9860g-1h10.dts b/arch/arm64/boot/dts/sprd/sp9860g-1h10.dts
> index 0362ecd..6fe052d 100644
> --- a/arch/arm64/boot/dts/sprd/sp9860g-1h10.dts
> +++ b/arch/arm64/boot/dts/sprd/sp9860g-1h10.dts
> @@ -39,6 +39,10 @@
>  		#size-cells = <2>;
>  		ranges;
>  	};
> +
> +	sprd-fm {
> +		compatible  = "sprd,marlin2-fm";
> +	};

What kind of device is this? MMIO?

It seems to be sitting directly under the root node, but has no reg or
relationship with another bus defined, so something is missing.

This will need binding documentation.

Thanks,
Mark.


>  };
>  
>  &uart0 {
> -- 
> 2.7.4
> 
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