Re: [PATCH 4/6 v2] ARM: integrator: initial device tree support

[Rob Herring <robherring2-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>]

On 08/31/2012 10:55 PM, Linus Walleij wrote:
> This is initial device tree support for the ARM Integrator family,
> we create a very basic device tree, #ifdef out the non-DT machines
> when compiling for device tree.
> 
> Signed-off-by: Linus Walleij <linus.walleij-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
> ---
> ChangeLog v1->v2:
> - Also switch over clocksource and clockevent to device tree.
>   Else the IRQ mapping goes bananas.
> ---

snip

> +++ b/arch/arm/boot/dts/integratorcp.dts
> @@ -0,0 +1,69 @@
> +/*
> + * Device Tree for the ARM Integrator/CP platform
> + */
> +
> +/dts-v1/;
> +/include/ "skeleton.dtsi"
> +
> +/ {
> +	model = "ARM Integrator/CP";
> +	compatible = "arm,integrator-cp";
> +	ranges;
> +
> +	aliases {
> +		arm,integrator-clocksource = &timer2;
> +		arm,integrator-clockevent = &timer1;

This is linux specific and a common issue we need a solution for. Grant
had done something for versatile and we discussed it some, but nothing
ever got close to finalized. IIRC, Grant's solution was just add a
"linux,clockevent" or "linux,clocksource" to the nodes that are to be
used. But he wasn't really happy with it. Perhaps using these names as
aliases would be better.

Rob