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

[Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>]

Hello.

On 03/21/2014 06:09 PM, 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@linaro.org>
> ---
>   .../bindings/net/hisilicon-hip04-net.txt           |  107 ++++++++++++++++++++
>   1 file changed, 107 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..22838b2
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/net/hisilicon-hip04-net.txt
> @@ -0,0 +1,107 @@
> +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-handle: phandle, specifies a reference to a node representing
> +  the connected port
> +- Inherets from ethernet common binding [1]

    Inherits.

> +[1] Documentation/devicetree/bindings/net/ethernet.txt

    Well, this way it's not clear what exactly it iherits as that file 
describes many alternate properties with the same meaning.

> +
> +
> +* Ethernet ppe node:
> +Control rx & tx fifos of all ethernet controllers.
> +Have 2048 recv channels shared by all ethernet controllers, only if no overlap.
> +Each controller's start recv channel is alisa_id * RX_DESC_NUM.
> +
> +Required properties:
> +- #address-cells : Should be <1>
> +- #size-cells : Should be <0>
> +- compatible: "hisilicon,hip04-ppe"
> +- reg: address and length of the register set for the device.
> +
> +==Child node==
> +
> +Required properties:
> +- reg: port physical number, range from 0 to 0x1f
> +
> +
> +* MDIO bus node:
> +
> +Required properties:
> +
> +- compatible: should be "hisilicon,hip04-mdio", "ethernet-phy-ieee802.3-c22".

    I didn't understand what kind of node this is: MDIO bus or PHY? These 
values seem mutually exclusive.

> +- Inherets from MDIO bus node binding [2]

    Inherits.

> +[2] Documentation/devicetree/bindings/net/phy.txt

WBR, Sergei