linux-kernel - Re: [PATCH 2/6] mailbox/omap: add support for parsing dt devices

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Message-ID: <20140628170709.GB23634@xo-6d-61-c0.localdomain>
Date:	Sat, 28 Jun 2014 19:07:09 +0200
From:	Pavel Machek <pavel@....cz>
To:	Suman Anna <s-anna@...com>
Cc:	Tony Lindgren <tony@...mide.com>,
	Jassi Brar <jaswinder.singh@...aro.org>,
	Dave Gerlach <d-gerlach@...com>, linux-kernel@...r.kernel.org,
	linux-omap@...r.kernel.org, devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	Jassi Brar <jassisinghbrar@...il.com>,
	Rob Herring <robh+dt@...nel.org>
Subject: Re: [PATCH 2/6] mailbox/omap: add support for parsing dt devices

Hi!

> The non-DT support has to be maintained for now to not break
> OMAP3 legacy boot, and the legacy-style code will be cleaned
> up once OMAP3 is also converted to DT-boot only.

> @@ -587,24 +606,157 @@ static int omap_mbox_unregister(struct omap_mbox_device *mdev)
>  	return 0;
>  }
>  
> +static const struct omap_mbox_device_data omap2_data = {
> +	.num_users	= 4,
> +	.num_fifos	= 6,
> +	.intr_type	= MBOX_INTR_CFG_TYPE1,
> +};
> +
> +static const struct omap_mbox_device_data omap3_data = {
> +	.num_users	= 2,
> +	.num_fifos	= 2,
> +	.intr_type	= MBOX_INTR_CFG_TYPE1,
> +};
> +
> +static const struct omap_mbox_device_data am335x_data = {
> +	.num_users	= 4,
> +	.num_fifos	= 8,
> +	.intr_type	= MBOX_INTR_CFG_TYPE2,
> +};

So you use compatible strings to look up 3 integers. Would it be better to have
num_users/num_fifos/intr_type directly in the device tree? That should be cleaner
and more flexible...

If you do that, would it be possible to have share compatible string?

									Pavel

-- 
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