drivers: of: Make use of devpath_to_name() ...

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

of: Make of_property_get_value() public ...

Make of_property_get_value() public, so it can be used in other part
of the system.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Merge branch 'for-next/misc'

of: partition: fix typo when writing #address-cells ...

On > 4 GiB eMMC devices, barebox writes a 32-bit address and a 64-bit
size into the partition reg property, because #address-cells is
accidentally written as '#addres-cells'. This causes a fallback to
32-bit address size. Fix the typo and thereby of_partition_fixup for
64-bit partitions.

Fixes: a2fa18f9f483 ("mtd: of: Make used partition binding configurable")
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

of: demote "no ranges" message to debug level ...

There are valid cases where there is no way to translate a OF node to
a MMIO address via ranges, so do the same as the Linux kernel and don't
print an error message in that case, but make it available as a debug
message.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

of: Make locally used function static ...

__of_unflatten_dtb is only locally used and has no prototype in
include/. Make it static.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

of: Make locally used function static ...

of_property_get_value is only locally used and has no prototype in
include/. Make it static.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Merge branch 'for-next/of'

of: mtd: partition: Use reproducible node names for fixup ...

The full names of device nodes are not as stable as we like them
to be. Lately the leading zeroes in the i.MX6 device trees were
removed which led to the result that we can no longer find the
partition nodes in the to be fixed tree. Use reproducible names
to overcome this.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

of: Add function to find the same node in another tree ...

For our device tree fixups we have to find a node corresponding to
another node in another device tree. We used to use the full name
to match the nodes, but this falls apart when nodes get renamed
or for example a new bus hierarchy is introduced. To make this
more robust we create reproducible names from device nodes which
mostly depend on the address in MMIO space, the reg property and
as a last resort the name of the device node.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

of: fdt: add of_unflatten_dtb_const ...

This adds a variant of of_unflatten_dtb() which uses the property data
directly from the input tree rather than copying it. This is mainly
useful for a single user: FIT images.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

of: Allow for const properties ...

This adds support for const properties. We add a const void *value_const
to struct property which will not be modified. The value of a property
should no longer be used directly, but with the of_property_get_value()
accessor which picks the right value.
With this we can unflatten dtbs and use the property values directly
from the dtb instead of copying them. This is useful for device trees
which (ab)use properties to store huge data files, aka FIT images.
To create a property whose value is not copied but used from the
original input data we introduce of_new_property_const().

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

of: base: fix segfault in of_get_machine_compatible() ...

This is running the barebox sandbox:

  Thread 1 "barebox" received signal SIGSEGV, Segmentation fault.
  0x0000555555579e2b in _strchr (s=s@entry=0x0, c=c@entry=44) at lib/string.c:251
  251		for(; *s != (char) c; ++s)
  (gdb) bt
  #0  0x0000555555579e2b in _strchr (s=s@entry=0x0, c=c@entry=44) at lib/string.c:251
  #1  0x000055555556fd91 in of_get_machine_compatible () at drivers/of/base.c:2380
  #2  0x000055555556fda8 in of_init_hostname () at drivers/of/base.c:2389
  #3  0x000055555555f9e6 in start_barebox () at common/startup.c:106
  #4  0x00005555555a291a in main ()
  (gdb) fr 1
  #1  0x000055555556fd91 in of_get_machine_compatible () at drivers/of/base.c:2380
  2380		p = strchr(name, ',');

Signed-off-by: Aleksander Morgado <aleksander@aleksander.es>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

of: base: use root_node compatible as suggestion for a hostname ...

on some SoCs we can use generic PLL and RAM initialization. In this
cases we create board file only to provide a host name.
With this patch host name will be created from device tree compatible.
For example:
 compatible = "board_vendor,board", "chip_vendor,soc"
the host name will be:
 "board"

This function will not overwrite a host name which is already set by
board or machine code.

Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Merge branch 'for-next/misc'

of: base: add function to copy a device tree node ...

Signed-off-by: Michael Olbrich <m.olbrich@pengutronix.de>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

of: populate clock providers before other devices ...

Clocks are a basic resource, which may be needed early by other
devices or even the bus driver (as is the case with the ARM AMBA
bus). Register them before populating other devices.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

remove checks for xzalloc() returning NULL ...

xzalloc() either returns memory or panics, so checking for NULL is useless.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

of: base: port of_device_is_big_endian from linux ...

|commit 37786c7
|Author: Kevin Cernekee <cernekee@gmail.com>
|Date:   Thu Apr 9 13:05:14 2015 -0700
|
|    of: Add helper function to check MMIO register endianness
|
|    SoC peripherals can come in several different flavors:
|
|     - little-endian: registers always need to be accessed in LE mode (so the
|       kernel should perform a swap if the CPU is running BE)
|
|     - big-endian: registers always need to be accessed in BE mode (so the
|       kernel should perform a swap if the CPU is running LE)
|
|     - native-endian: the bus will automatically swap accesses, so the kernel
|       should never swap
|
|    Introduce a function that checks an OF device node to see whether it
|    contains a "big-endian" or "native-endian" property.  For the former case,
|    always return true.  For the latter case, return true iff the kernel was
|    built for BE (implying that the BE MMIO accessors do not perform a swap).
|    Otherwise return false, assuming LE registers.
|
|    LE registers are assumed by default because most existing drivers (libahci,
|    serial8250, usb) always use readl/writel in the absence of instructions
|    to the contrary, so that will be our fallback.

Signed-off-by: Oleksij Rempel <linux@rempel-privat.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

of: of_path: find device via partuuid ...

When a node is compatible to a fixed-partitions, support searching the
corresponding device via the partuuid, if it specified in the device tree.

Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>

of_device_is_stdout_path: split off options and support aliases ...

Several device trees use something like:

	stdout-path = "serial0:115200n8";

Currently of_device_is_stdout_path fails to do the right thing here
because it expects an absolute node path and no options. So split off
options (everything after the colon) and resolve aliases.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

of_device_is_stdout_path: simplify ...

Test for dev->device_node being NULL earlier which at the end of the
function allows to simplify the calculation of the return value

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Merge branch 'for-next/misc'

of: Search for /memory node by type, if it is not found by name ...

Update of Rockchip dts featured changes of simple "/memory" node
to "/memory@6000000". Support this change.

Signed-off-by: Andrey Panov <rockford@yandex.ru>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

of: of_find_node_by_devpath: Fix offset in mtd devices ...

When a cdev is a mtd device the partition offset must be used from
there, not from the cdev.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Merge branch 'for-next/misc'

of: base: of_new_property(): use xstrdup() instead of strdup() ...

At the moment of_new_property() uses xfunctions for memory
allocation so we can use xstrdup() instead of strdup()
for code simplification.

A side effect of this commmit is that
the of_new_property() function can't return NULL
anymore if CONFIG_OFTREE is set.

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

of: base: exclude memcpy-like code from of_property_write_u8_array() ...

The of_new_property() function already has functionality
to copy data into of_property so we can make
of_property_write_u8_array() simpler.

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mtd: of: only add partition layout param when GLOBAL support is enabled ...

Fixes: a2fa18f9f483 (mtd: of: Make used partition binding configurable)
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

of: of_net: use a loop ...

iterate over the different property names rather than having
the same code three times.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>