Subject: how to specify an OMAP clock in device tree?

From: [email-masked] (Roger Quadros)
Date: Tue, 5 Feb 2013 16:29:13 +0200

On 02/05/2013 04:21 PM, Rajendra Nayak wrote:
> On Tuesday 05 February 2013 07:48 PM, Roger Quadros wrote:
>> On 02/05/2013 04:13 PM, Rajendra Nayak wrote:
>>> On Tuesday 05 February 2013 07:16 PM, Roger Quadros wrote:
>>>> Fixing the device name doesn't really solve the problem.
>>>> Not all OMAP boards will use the same clock for the external device.
>>>
>>> Are you saying different OMAP boards will use different Internal clocks?
>>> Or different OMAP boards will use a single Internal clock or an
>>> external one.
>>>
>> All I was saying is that one board can use for example auxclk1 whereas another
>> one can use auxclk3, both generated by OMAP for the same PHY configuration.
> 
> Ok, so lets keep DT aside for a while. How would something like this
> work in a non-DT world? Would the driver then be able to do a
> clk_get(dev, "main_clk"); and get say auxclk1 on one board and
> auxclk3 on another?
> 

Yes, all you need to do is specify an alias to the clock in the board file.

e.g. in board 1 file
	clk_add_alias("main_clk", "phy.1", "auxclk1_ck", NULL);

in board 2 file
	clk_add_alias("main_clk", "phy.1", "auxclk3_ck", NULL);

cheers,
-roger