On Aug 30, 2013, at 7:29 PM, Sergei Shtylyov wrote:
> Add support of the device tree probing for the Renesas SH-Mobile SoCs.
>
> This work is loosely based on an original patch by Nobuhiro Iwamatsu
> <nobuhiro.iwamatsu.yj@xxxxxxxxxxx>.
>
> Signed-off-by: Sergei Shtylyov <sergei.shtylyov@xxxxxxxxxxxxxxxxxx>
>
> ---
> This patch is against Dave's 'net-next.git' repo.
>
> Documentation/devicetree/bindings/net/sh_eth.txt | 40 +++++++++++++
> drivers/net/ethernet/renesas/sh_eth.c | 66 ++++++++++++++++++++++-
> 2 files changed, 105 insertions(+), 1 deletion(-)
>
> Index: net-next/Documentation/devicetree/bindings/net/sh_eth.txt
> ===================================================================
> --- /dev/null
> +++ net-next/Documentation/devicetree/bindings/net/sh_eth.txt
> @@ -0,0 +1,40 @@
> +* Renesas Electronics SH EtherMAC
> +
> +This file provides information on what the device node for the SH EtherMAC
> +interface contains.
> +
> +Required properties:
> +- compatible: "renesas,gether-r8a7740" if the device is a part of R8A7740 SoC.
> + "renesas,ether-r8a7779" if the device is a part of R8A7778/9 SoCs.
> + "renesas,ether-r8a7790" if the device is a part of R8A7790/1 SoCs.
Curious, 7779 (vs 7778) but 7790 (vs 7791).
> +- reg: offset and length of the register set for the device; if the device has
> + TSU registers, you need to specify two register sets here.
> +- interrupt-parent: the phandle for the interrupt controller that services
> + interrupts for this device.
> +- interrupts: interrupt mapping for the interrupt source.
> +- phy-mode: string, operation mode of the PHY interface (a string that
> + of_get_phy_mode() can understand).
> +- phy-handle: phandle of the PHY device.
> +
Should add something about requiring a phy subnode
> +Optional properties:
> +- local-mac-address: 6 bytes, MAC address.
What's the assumption if local-mac-address is not specified?
> +- renesas,no-ether-link: specify when a board does not provide a proper LINK
> + signal.
How is this different from the fixed link concept we have?
> +- renesas,ether-link-active-low: specify when the LINK signal is active-low.
> +
> +Example (Armadillo800EVA board):
> +
> + ethernet@e9a00000 {
> + compatible = "renesas,gether-r8a7740";
> + reg = <0xe9a00000 0x800>, <0xe9a01800 0x800>;
> + interrupt-parent = <&gic>;
> + interrupts = <0 142 0x4>;
> + phy-mode = "mii";
> + phy-handle = <&phy0>;
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + phy0: ethernet-phy@0 {
> + reg = <0>;
> + };
> + };
- k
--
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