linux-kernel - Re: [PATCH v3 12/19] clk: at91: add peripheral clk macros for peripheral clk dt bindings

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Date:	Tue, 8 Oct 2013 18:15:17 +0200
From:	Nicolas Ferre <nicolas.ferre@...el.com>
To:	boris brezillon <b.brezillon@...rkiz.com>,
	Grant Likely <grant.likely@...aro.org>,
	Rob Herring <rob.herring@...xeda.com>,
	Rob Landley <rob@...dley.net>,
	Andrew Victor <linux@...im.org.za>,
	"Jean-Christophe Plagniol-Villard" <plagnioj@...osoft.com>,
	Russell King <linux@....linux.org.uk>,
	Mike Turquette <mturquette@...aro.org>,
	"Felipe Balbi" <balbi@...com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Ludovic Desroches <ludovic.desroches@...el.com>,
	Josh Wu <josh.wu@...el.com>,
	Richard Genoud <richard.genoud@...il.com>
CC:	<devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH v3 12/19] clk: at91: add peripheral clk macros for peripheral
 clk dt bindings

On 08/10/2013 18:01, boris brezillon :
> On 08/10/2013 17:44, Nicolas Ferre wrote:
>> On 08/08/2013 09:10, Boris BREZILLON :
>>> This patch adds the peripheral divisors macros (for sam9x5 compatible
>>> IPs)
>>> which will be used by peripheral clk dt definitions.
>>
>> I am in favor for these definitions. So let's keep them (with raw
>> numbers toguether with these macros in documentation).
>
> I guess we should move them elsewhere if these are the only macros we keep.
>
> What about "include/dt-bindings/clk/at91sam9x5-periph.h" ?

Well, what about a more generic clk binding file for all at91-related 
definitions (if more come). We can still differentiate among devices 
into the file itself...

What do you think about:
include/dt-bindings/clk/at91.h
is it too generic?

BTW, I see the clk and clock directories. What is the difference?


>>> Signed-off-by: Boris BREZILLON <b.brezillon@...rkiz.com>
>>> ---
>>>    .../clk/at91/at91sam9x5/clk-peripheral.h           |   15
>>> +++++++++++++++
>>>    1 file changed, 15 insertions(+)
>>>    create mode 100644
>>> include/dt-bindings/clk/at91/at91sam9x5/clk-peripheral.h
>>>
>>> diff --git a/include/dt-bindings/clk/at91/at91sam9x5/clk-peripheral.h
>>> b/include/dt-bindings/clk/at91/at91sam9x5/clk-peripheral.h
>>> new file mode 100644
>>> index 0000000..a6dd506
>>> --- /dev/null
>>> +++ b/include/dt-bindings/clk/at91/at91sam9x5/clk-peripheral.h
>>> @@ -0,0 +1,15 @@
>>> +/*
>>> + * This header provides constants for AT91 peripheral clks.
>>> + *
>>> + * The constants defined in this header are being used in dts.
>>> + */
>>> +
>>> +#ifndef _DT_BINDINGS_CLK_AT91SAM9X5_PERIPH_H
>>> +#define _DT_BINDINGS_CLK_AT91SAM9X5_PERIPH_H
>>> +
>>> +#define AT91SAM9X5_PERIPH_CLK_DIV1    0
>>> +#define AT91SAM9X5_PERIPH_CLK_DIV2    1
>>> +#define AT91SAM9X5_PERIPH_CLK_DIV4    2
>>> +#define AT91SAM9X5_PERIPH_CLK_DIV8    3
>>> +
>>> +#endif
>>>
>>
>>
>
>
>


-- 
Nicolas Ferre
--
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