netdev - Re: [PATCH 1/3] Documentation: add Device tree bindings for Hisilicon hip04 ethernet

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Date:	Tue, 18 Mar 2014 12:34:51 +0000
From:	Mark Rutland <mark.rutland@....com>
To:	Zhangfei Gao <zhangfei.gao@...aro.org>
Cc:	"David S. Miller" <davem@...emloft.net>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>
Subject: Re: [PATCH 1/3] Documentation: add Device tree bindings for
 Hisilicon hip04 ethernet

On Tue, Mar 18, 2014 at 08:40:15AM +0000, Zhangfei Gao wrote:
> This patch adds the Device Tree bindings for the Hisilicon hip04
> Ethernet controller, including 100M / 1000M controller.
> 
> Signed-off-by: Zhangfei Gao <zhangfei.gao@...aro.org>
> ---
>  .../bindings/net/hisilicon-hip04-net.txt           |   74 ++++++++++++++++++++
>  1 file changed, 74 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/net/hisilicon-hip04-net.txt
> 
> diff --git a/Documentation/devicetree/bindings/net/hisilicon-hip04-net.txt b/Documentation/devicetree/bindings/net/hisilicon-hip04-net.txt
> new file mode 100644
> index 0000000..c918f08
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/net/hisilicon-hip04-net.txt
> @@ -0,0 +1,74 @@
> +Hisilicon hip04 Ethernet Controller
> +
> +* Ethernet controller node
> +
> +Required properties:
> +- compatible: should be "hisilicon,hip04-mac".
> +- reg: address and length of the register set for the device.
> +- interrupts: interrupt for the device.
> +- port: ppe port number connected to the controller: range from 0 to 31.

ppe?

Will there ever be more than one ppe? If so, describing the linkage to
the ppe with a phandle + args approach is preferable.

> +- speed: 100 (100M) or 1000 (1000M).

Can you not query this from the hardware?

> +- id: should be different and fe should be 0.

This description is useless.

What is this for, and why does this need to be in the dt? What is "fe"?

> +
> +Optional Properties:
> +- phy-handle : the phandle to a PHY node
> +
> +
> +* Ethernet ppe node: control rx & tx fifos of all ethernet controllers
> +
> +Required properties:
> +- compatible: should be "hisilicon,hip04-ppebase".

Why "ppebase" rather than "ppe"?

> +- reg: address and length of the register set for the node.

s/node/device/

Cheers,
Mark.
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