[U-Boot] [PATCH 2/3] tegra: medcom: Add device tree support

[Stephen Warren]

On 05/24/2012 01:04 AM, Thierry Reding wrote:
> Device tree support is required for working USB host support, which in
> turn enables ethernet support.

> diff --git a/board/avionic-design/dts/tegra2-medcom.dts b/board/avionic-design/dts/tegra2-medcom.dts

> +	chosen {
> +		bootargs = "console=ttyS0,115200n8";
> +	};

I don't think you need that in the U-Boot .dts file, since it's specific
to the kernel. Admittedly, U-Boot's tegra2-seaboard.dts has it, but none
of the other Tegra .dts files do.

> +	sdhci at c8000600 {
> +		cd-gpios = <&gpio 58 0>; /* gpio PH2 */
> +		wp-gpios = <&gpio 59 0>; /* gpio PH3 */
> +	};

I'd prefer not to include SDHCI nodes in the U-Boot .dts files, since
U-Boot doesn't support configuring the SDHCI controllers from device
tree (yet?). Having these nodes exist before then would be misleading.
Yes again, the seaboard .dts file has it, but it should probably be
removed from there too.

> diff --git a/include/configs/medcom.h b/include/configs/medcom.h

> +/* USB networking support */
> +#define CONFIG_USB_HOST_ETHER
> +#define CONFIG_USB_ETHER_SMSC95XX
> +#define CONFIG_USB_ETHER_ASIX

Is there an SMSC95XX on the board? Since standalone dongles with that
chipset are rare, we've removed that one config option from all the
other Tegra boards since it likely isn't useful (except Harmony which
has that chip on board).

Aside from those comments, this looks fine.