linux-kernel - Re: [PATCH 2/3] net/fec: add device tree support

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Sat, 18 Jun 2011 20:27:22 +0200
From:	Arnd Bergmann <arnd@...db.de>
To:	linux-arm-kernel@...ts.infradead.org
Cc:	Shawn Guo <shawn.guo@...aro.org>, patches@...aro.org,
	netdev@...r.kernel.org, devicetree-discuss@...ts.ozlabs.org,
	Jason Liu <jason.hui@...aro.org>, linux-kernel@...r.kernel.org,
	"David S. Miller" <davem@...emloft.net>
Subject: Re: [PATCH 2/3] net/fec: add device tree support

On Saturday 18 June 2011 17:19:13 Shawn Guo wrote:
> diff --git a/Documentation/devicetree/bindings/net/fsl-fec.txt b/Documentation/devicetree/bindings/net/fsl-fec.txt
> new file mode 100644
> index 0000000..705111d
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/net/fsl-fec.txt
> @@ -0,0 +1,14 @@
> +* Freescale Fast Ethernet Controller (FEC)
> +
> +Required properties:
> +- compatible : should be "fsl,<soc>-fec", "fsl,fec"
> +- reg : address and length of the register set for the device
> +- interrupts : should contain fec interrupt
> +
> +Example:
> +
> +fec@...ec000 {
> +	compatible = "fsl,imx51-fec", "fsl,fec";
> +	reg = <0x83fec000 0x4000>;
> +	interrupts = <87>;
> +};

How about also adding device_type="network" as required here, so you
inherit the attributes like "local-mac-address".

I would also suggest adding a call to of_get_mac_address() so you
can read the address out of the device tree when it is not configured
in hardware. Today, the driver relies on a module parameter or
platform_data on hardware with a mac address set.

The other information that is currently encoded in platform_data
is the phy mode. How about adding a property that enables RMII mode
when present?

	Arnd
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/