u-boot.git/lib/libfdt, branch v2016.11-rc1

libfdt: simplify fdt_del_mem_rsv()

2016-09-23T21:53:49+00:00

The variable "err" is unneeded.

[ Device Tree Compiler commit: 36fd7331fb11276c09a6affc0d8cd4977f2fe100 ]

Signed-off-by: Masahiro Yamada 
Signed-off-by: David Gibson 
Acked-by: Simon Glass

dtoc: Support finding the offset of a property

2016-09-19T03:04:39+00:00

Add a way to find the byte offset of a property within the device tree. This
is only supported with the normal libfdt implementation since fdtget does
not provide this information.

Signed-off-by: Simon Glass

dtoc: Support packing the device tree

2016-09-19T03:04:39+00:00

After any node/property deletion the device tree can be packed to remove
spare space. Add a way to perform this operation.

Note that for fdt_fallback, fdtput automatically packs the device tree after
deletion, so no action is required here.

Signed-off-by: Simon Glass

dtoc: Support deleting device tree properties

2016-09-19T03:04:39+00:00

Add support for deleting a device tree property. With the fallback
implementation this uses fdtput. With libfdt it uses the API call and
updates the offsets afterwards.

Signed-off-by: Simon Glass

dtoc: Move to using bytearray

2016-09-19T03:04:39+00:00

Since we want to be able to change the in-memory device tree using libfdt,
use a bytearray instead of a string. This makes interfacing from Python
easier.

Signed-off-by: Simon Glass

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