u-boot.git/lib/libfdt, branch v2016.09-rc2

tests: Introduce DT overlay tests

2016-08-20T15:35:07+00:00

This adds a bunch of unit tests for the "fdt apply" command.

They've all been run successfully in the sandbox. However, as you still
require an out-of-tree dtc with overlay support, this is disabled by
default.

Acked-by: Simon Glass 
Acked-by: Pantelis Antoniou 
Signed-off-by: Maxime Ripard

cmd: fdt: add fdt overlay application subcommand

2016-08-20T15:35:05+00:00

The device tree overlays are a good way to deal with user-modifyable
boards or boards with some kind of an expansion mechanism where we can
easily plug new board in (like the BBB or the raspberry pi).

However, so far, the usual mechanism to deal with it was to have in Linux
some driver detecting the expansion boards plugged in and then request
these overlays using the firmware interface.

That works in most cases, but in some cases, you might want to have the
overlays applied before the userspace comes in. Either because the new
board requires some kind of an early initialization, or because your root
filesystem is accessed through that expansion board.

The easiest solution in such a case is to simply have the component before
Linux applying that overlay, removing all these drawbacks.

Reviewed-by: Stefan Agner 
Acked-by: Pantelis Antoniou 
Acked-by: Simon Glass 
Signed-off-by: Maxime Ripard

libfdt: Add overlay application function

2016-08-20T15:35:04+00:00

The device tree overlays are a good way to deal with user-modifyable
boards or boards with some kind of an expansion mechanism where we can
easily plug new board in (like the BBB, the Raspberry Pi or the CHIP).

Add a new function to merge overlays with a base device tree.

Signed-off-by: Maxime Ripard

libfdt: Add fdt_setprop_inplace_namelen_partial

2016-08-20T15:35:04+00:00

Add a function to modify inplace only a portion of a property..

This is especially useful when the property is an array of values, and you
want to update one of them without changing the DT size.

Signed-off-by: Maxime Ripard 
Acked-by: Simon Glass

libfdt: Add fdt_path_offset_namelen

2016-08-20T15:35:02+00:00

Add a namelen variant of fdt_path_offset to retrieve the node offset using
only a fixed number of characters.

Reviewed-by: Simon Glass 
Signed-off-by: Maxime Ripard

libfdt: Fix separator spelling

2016-08-20T15:35:02+00:00

The function fdt_path_next_seperator had an obvious mispell. Fix it.

Signed-off-by: Maxime Ripard

libfdt: Add max phandle retrieval function

2016-08-20T15:35:01+00:00

Add a function to retrieve the highest phandle in a given device tree.

Signed-off-by: Maxime Ripard 
Reviewed-by: Stefan Agner 
Acked-by: Simon Glass

dm: Add a more efficient libfdt library

2016-07-15T02:40:24+00:00

Add a Python version of the libfdt library which contains enough features to
support the dtoc tool. This is only a very bare-bones implementation. It
requires the 'swig' to build.

Signed-off-by: Simon Glass

lib/libfdt/: General aesthetic/style fixes.

2016-06-19T23:05:55+00:00

A number of style fixes across the files in this directory, including:

 * Correct invalid kernel-doc content.
 * Tidy up massive comment in fdt_region.c.
 * Use correct spelling of "U-Boot".
 * Replace tests of "! " with "!".
 * Replace "libfdt_env.h" with .

Signed-off-by: Robert P. J. Day 
Acked-by: Simon Glass

libfdt: Add a function to write a property placeholder

2016-03-14T18:19:11+00:00

The existing function to add a new property to a tree being built requires
that the entire contents of the new property be passed in. For some
applications it is more convenient to be able to add the property contents
later, perhaps by reading from a file. This avoids double-buffering of the
contents.

Add a new function to support this and adust the existing fdt_property() to
use it.

Signed-off-by: Simon Glass