[PATCH v5 4/5] Add fdtget utility to read property values from a device tree

[David Gibson]

On Thu, Sep 22, 2011 at 10:11:05AM -0700, Simon Glass wrote:
> This simply utility makes it easy for scripts to read values from the device
> tree. It is written in C and uses the same libfdt as the rest of the dtc
> package.
> 
> What is it for:
> - Reading fdt values from scripts
> - Extracting fdt information within build systems
> - Looking at particular values without having to dump the entire tree
> 
> To use it, specify the fdt binary file on command line followed by a list of
> node, property pairs. The utility then looks up each node, finds the property
> and displays the value.
> 
> Each value is printed on a new line.
> 
> fdtget tries to guess the type of each property based on its contents. This
> is not always reliable, so you can use the -t option to force fdtget to decode
> the value as a string, or byte, etc.
> 
> To read from stdin, use - as the file.
> 
> Usage:
> 	fdtget <options> <dt file> [<node> <property>]...
> Options:
> 	-t <type>	Type of data
> 	-h		Print this help
> 
> <type>	s=string, i=int, u=unsigned, x=hex
> 	Optional modifier prefix:
> 		hh or b=byte, h=2 byte, l=4 byte (default)
> 
> Signed-off-by: Simon Glass <sjg at chromium.org>

Acked-by: David Gibson <david at gibson.dropbear.id.au>

-- 
David Gibson			| I'll have my music baroque, and my code
david AT gibson.dropbear.id.au	| minimalist, thank you.  NOT _the_ _other_
				| _way_ _around_!
http://www.ozlabs.org/~dgibson