linux-kernel - Re: [PATCH] video: ARM CLCD: Added support for FBIO

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Message-ID: <1425312029.3092.1.camel@arm.com>
Date:	Mon, 02 Mar 2015 16:00:29 +0000
From:	Pawel Moll <pawel.moll@....com>
To:	Arun Ramamurthy <arun.ramamurthy@...adcom.com>
Cc:	Rob Herring <robh+dt@...nel.org>,
	Mark Rutland <Mark.Rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Russell King <linux@....linux.org.uk>,
	Jean-Christophe Plagniol-Villard <plagnioj@...osoft.com>,
	Tomi Valkeinen <tomi.valkeinen@...com>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-fbdev@...r.kernel.org" <linux-fbdev@...r.kernel.org>,
	Dmitry Torokhov <dtor@...gle.com>,
	Anatol Pomazau <anatol@...gle.com>,
	Jonathan Richardson <jonathar@...adcom.com>,
	Scott Branden <sbranden@...adcom.com>,
	Ray Jui <rjui@...adcom.com>,
	"bcm-kernel-feedback-list@...adcom.com" 
	<bcm-kernel-feedback-list@...adcom.com>
Subject: Re: [PATCH] video: ARM CLCD: Added support for FBIO_WAITFORVSYNC

On Wed, 2015-02-25 at 21:01 +0000, Arun Ramamurthy wrote:
> Added ioctl and interrupt handler functions to support FBIO_WAITFORVSYNC
> Also corrected documentation to make interrupts and interrupt-names
> optional as they are not required properties.

You may not be aware of this fact, but its the "documentation" what
defines what properties are required...

> Reviewed-by: Ray Jui <rjui@...adcom.com>
> Reviewed-by: Scott Branden <sbranden@...adcom.com>
> Signed-off-by: Arun Ramamurthy <arun.ramamurthy@...adcom.com>0
> ---
>  .../devicetree/bindings/video/arm,pl11x.txt        | 11 +--
>  drivers/video/fbdev/amba-clcd.c                    | 82 ++++++++++++++++++++++
>  include/linux/amba/clcd.h                          |  4 ++
>  3 files changed, 89 insertions(+), 8 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/video/arm,pl11x.txt b/Documentation/devicetree/bindings/video/arm,pl11x.txt
> index 2262cdb..7d19024 100644
> --- a/Documentation/devicetree/bindings/video/arm,pl11x.txt
> +++ b/Documentation/devicetree/bindings/video/arm,pl11x.txt
> @@ -10,14 +10,6 @@ Required properties:
>  
>  - reg: base address and size of the control registers block
>  
> -- interrupt-names: either the single entry "combined" representing a
> -	combined interrupt output (CLCDINTR), or the four entries
> -	"mbe", "vcomp", "lnbu", "fuf" representing the individual
> -	CLCDMBEINTR, CLCDVCOMPINTR, CLCDLNBUINTR, CLCDFUFINTR interrupts
> -
> -- interrupts: contains an interrupt specifier for each entry in
> -	interrupt-names
> -
>  - clock-names: should contain "clcdclk" and "apb_pclk"
>  
>  - clocks: contains phandle and clock specifier pairs for the entries

So no, you can't do that.

Pawel

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