[PATCH] arm, davinci: configure davinci aemif chipselects through OF

Sergei Shtylyov sshtylyov at mvista.com
Sun Dec 4 23:25:45 EST 2011


Hello.

On 04-12-2011 13:41, Heiko Schocher wrote:

> Signed-off-by: Heiko Schocher<hs at denx.de>
> Cc: davinci-linux-open-source at linux.davincidsp.com
> Cc: devicetree-discuss at lists.ozlabs.org
> Cc: linux-arm-kernel at lists.infradead.org
> Cc: grant.likely at secretlab.ca
> Cc: Sekhar Nori<nsekhar at ti.com>
> Cc: Kevin Hilman<khilman at ti.com>
> Cc: Wolfgang Denk<wd at denx.de>

> diff --git a/arch/arm/mach-davinci/aemif.c b/arch/arm/mach-davinci/aemif.c
> index 1ce70a9..12c559f 100644
> --- a/arch/arm/mach-davinci/aemif.c
> +++ b/arch/arm/mach-davinci/aemif.c
[...]
> @@ -131,3 +138,99 @@ int davinci_aemif_setup_timing(struct davinci_aemif_timing *t,
>   	return 0;
>   }
>   EXPORT_SYMBOL(davinci_aemif_setup_timing);
> +
> +#if defined(CONFIG_OF)
> +static int dv_get_value(struct device_node *np, const char *name)
> +{
> +	const u32 *data;
> +	int len;
> +
> +	data = of_get_property(np, name,&len);
> +	if (data)
> +		return be32_to_cpu(readl(data));

    Why readl() here?! Device tree is not a peripheral device...

> +
> +	return -EINVAL;
> +}

    Isn't there already a standard helper for that, of_property_read_u32()?

WBR, Sergei


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