[PATCH 10/10] arm: add basic support for Rockchip RK3066a boards

Arnd Bergmann arnd at arndb.de
Mon Jun 3 06:26:49 EDT 2013

On Monday 03 June 2013 11:46:57 Heiko Stübner wrote:
> The timers are of the same type and the clocksource driver just grabs the 
> first of them as clockevent and the second as clocksource, so I think two 
> CLOCKSOURCE_OF_DECLARE lines won't do.

Ok, got it. I was confused by the fact that the existing two sets of
"compatible" strings have separate sets of strings:

static const struct of_device_id sptimer_ids[] __initconst = {
        { .compatible = "picochip,pc3x2-rtc" },
        { .compatible = "snps,dw-apb-timer-sp" },
        { /* Sentinel */ },

static const struct of_device_id osctimer_ids[] __initconst = {
        { .compatible = "picochip,pc3x2-timer" },
        { .compatible = "snps,dw-apb-timer-osc" },

and thought they were for clocksource and clockevent respectively,
which is wrong.

> But I just looked at clocksource_of_init a bit more closely, which does a 
> for_each_matching_node_and_match over the nodes. So the init_func could grab 
> the device for the clockevent on the first call and the clocksource when it 
> gets called for the second matching node.

Yes, I think that should work. You just have to be careful about calling
init_sched_clock() only once.


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