Re: [RFC][PATCH 1/2] ARM: OMAP4: clock: Add device tree support forAUXCLKs

From: Roger Quadros
Date: Thu Mar 21 2013 - 09:54:28 EST


On 03/21/2013 03:08 PM, Rajendra Nayak wrote:
> []..
>
>> diff --git a/arch/arm/mach-omap2/board-generic.c b/arch/arm/mach-omap2/board-generic.c
>> index 0274ff7..23f2064 100644
>> --- a/arch/arm/mach-omap2/board-generic.c
>> +++ b/arch/arm/mach-omap2/board-generic.c
>> @@ -158,7 +158,7 @@ DT_MACHINE_START(OMAP4_DT, "Generic OMAP4 (Flattened Device Tree)")
>> .init_irq = omap_gic_of_init,
>> .init_machine = omap_generic_init,
>> .init_late = omap4430_init_late,
>> - .init_time = omap4_local_timer_init,
>> + .init_time = omap4_init_time,
>> .dt_compat = omap4_boards_compat,
>> .restart = omap44xx_restart,
>> MACHINE_END
>
> []..
>> +#ifdef CONFIG_OF
>> +int __init omap4_clk_init_dt(void)
>> +{
>> + struct device_node *np;
>> +
>> + np = of_find_compatible_node(NULL, NULL, "ti,omap4-scrm");
>> + if (np) {
>> + scrm_data.clks = scrm_clks;
>> + scrm_data.clk_num = ARRAY_SIZE(scrm_clks);
>> + of_clk_add_provider(np, of_clk_src_onecell_get, &scrm_data);
>> + }
>> +
>> + return 0;
>> +}
>
> []..
>> +
>> +void __init omap4_init_time(void)
>> +{
>> + omap4_clk_init_dt();
>> + omap4_local_timer_init();
>> +}
>
> I guess you did all this because of_clk_add_provider() needs
> slab to be initialized. With the below patch[1], now clk inits
> happen within .init_timer already, so none of this would
> be needed.
>
> [1] http://www.spinics.net/lists/arm-kernel/msg231288.html
>

Right. I can then call omap4_clk_init_dt() from within omap4xxx_clk_init().

Any comments about the main subject? Does the approach look fine?

cheers,
-roger
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