linux-kernel - Re: [linux-sunxi] [PATCH 1/5] dt-bindings: allow dwmac-sun8i to use other devices' exported regmap

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Date:   Wed, 11 Apr 2018 14:36:19 +0000
From:   Brüns, Stefan <Stefan.Bruens@...h-aachen.de>
To:     "linux-sunxi@...glegroups.com" <linux-sunxi@...glegroups.com>,
        "icenowy@...c.io" <icenowy@...c.io>
CC:     Rob Herring <robh+dt@...nel.org>,
        Maxime Ripard <maxime.ripard@...tlin.com>,
        Chen-Yu Tsai <wens@...e.org>,
        Giuseppe Cavallaro <peppe.cavallaro@...com>,
        Corentin Labbe <clabbe.montjoie@...il.com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [linux-sunxi] [PATCH 1/5] dt-bindings: allow dwmac-sun8i to use
 other devices' exported regmap

On Mittwoch, 11. April 2018 16:16:37 CEST Icenowy Zheng wrote:
> On some Allwinner SoCs the EMAC clock register needed by dwmac-sun8i is
> in another device's memory space. In this situation dwmac-sun8i can use
> a regmap exported by the other device with only the EMAC clock register.
> 
> Document this situation in the dwmac-sun8i device tree binding
> documentation.
> 
> Signed-off-by: Icenowy Zheng <icenowy@...c.io>
> ---
>  Documentation/devicetree/bindings/net/dwmac-sun8i.txt | 5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/net/dwmac-sun8i.txt
> b/Documentation/devicetree/bindings/net/dwmac-sun8i.txt index
> 3d6d5fa0c4d5..0c5f63a80617 100644
> --- a/Documentation/devicetree/bindings/net/dwmac-sun8i.txt
> +++ b/Documentation/devicetree/bindings/net/dwmac-sun8i.txt
> @@ -20,8 +20,9 @@ Required properties:
>  - phy-handle: See ethernet.txt
>  - #address-cells: shall be 1
>  - #size-cells: shall be 0
> -- syscon: A phandle to the syscon of the SoC with one of the following
> - compatible string:
> +- syscon: A phandle to a device which exports the EMAC clock register as a
> + regmap or to the syscon of the SoC with one of the following compatible
.. regmap, or ...

> + string:
string_s_:

>    - allwinner,sun8i-h3-system-controller
>    - allwinner,sun8i-v3s-system-controller
>    - allwinner,sun50i-a64-system-controller

Kind regards,

Stefan