linux-kernel - Re: [PATCH v3 04/19] clk: at91: add PMC macro file for dt definitions

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Date:	Mon, 7 Oct 2013 17:17:57 +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 04/19] clk: at91: add PMC macro file for dt definitions

On 08/08/2013 07:04, Boris BREZILLON :
> This patch adds a new macro file for PMC macros.
>
> This macro file includes the definitions of SR (status register) bit
> offsets and will be use to reference PMC irqs.
>
> Signed-off-by: Boris BREZILLON <b.brezillon@...rkiz.com>
> ---
>   include/dt-bindings/clk/at91/common/pmc.h |   20 ++++++++++++++++++++
>   1 file changed, 20 insertions(+)
>   create mode 100644 include/dt-bindings/clk/at91/common/pmc.h
>
> diff --git a/include/dt-bindings/clk/at91/common/pmc.h b/include/dt-bindings/clk/at91/common/pmc.h
> new file mode 100644
> index 0000000..edc51d6
> --- /dev/null
> +++ b/include/dt-bindings/clk/at91/common/pmc.h
> @@ -0,0 +1,20 @@
> +/*
> + * This header provides constants for AT91 pmc status.
> + *
> + * The constants defined in this header are being used in dts.

It is better to add one line about license: for example:

  * Licensed under GPLv2 or later.


> + */
> +
> +#ifndef _DT_BINDINGS_CLK_AT91_PMC_H
> +#define _DT_BINDINGS_CLK_AT91_PMC_H
> +
> +#define AT91_PMC_MOSCS		0		/* MOSCS Flag */
> +#define AT91_PMC_LOCKA		1		/* PLLA Lock */
> +#define AT91_PMC_LOCKB		2		/* PLLB Lock */
> +#define AT91_PMC_MCKRDY		3		/* Master Clock */
> +#define AT91_PMC_LOCKU		6		/* UPLL Lock */
> +#define AT91_PMC_PCKRDY(id)	(8 + id)	/* Programmable Clock */

I prefer with parenthesis around "id" (8 + (id))

> +#define AT91_PMC_MOSCSELS	16		/* Main Oscillator Selection */
> +#define AT91_PMC_MOSCRCS	17		/* Main On-Chip RC */
> +#define AT91_PMC_CFDEV		18		/* Clock Failure Detector Event */
> +
> +#endif
>


-- 
Nicolas Ferre
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