linux-toradex.git/include/linux/of_fdt.h, branch v4.8-rc1

FDT: Add a helper to get the subnode by given name

2016-07-06T09:34:46+00:00

Sometimes it needs to check if there is a subnode of given node in FDT
by given name. Introduce this helper to get the subnode if it exists.

CC: Rob Herring 
Signed-off-by: Shannon Zhao 
Acked-by: Stefano Stabellini 
Acked-by: Rob Herring 
Tested-by: Julien Grall

drivers/of: Return allocated memory from of_fdt_unflatten_tree()

2016-05-16T12:22:35+00:00

This returns the allocate memory chunk, storing the unflattened device
tree, from of_fdt_unflatten_tree() so that memory chunk can be released
on demand in PowerNV PCI hotplug driver.

Signed-off-by: Gavin Shan 
Acked-by: Rob Herring 
Signed-off-by: Rob Herring

drivers/of: Specify parent node in of_fdt_unflatten_tree()

2016-05-16T12:22:35+00:00

This adds one more argument to of_fdt_unflatten_tree() to specify
the parent node of the FDT blob that is going to be unflattened.
In the result, the function can be used to unflatten FDT blob that
represents device sub-tree in PowerNV PCI hotplug driver.

Cc: Jyri Sarha 
Signed-off-by: Gavin Shan 
Acked-by: Rob Herring 
Acked-by: Jyri Sarha 
Signed-off-by: Rob Herring

of: earlycon: Move address translation to of_setup_earlycon()

2016-02-07T06:07:37+00:00

Cleanup the early DT/earlycon separation; remove the 'addr' parameter
from of_setup_earlycon() and get the uart phys addr directly with a
new wrapper function, of_flat_dt_translate_addr(). Limit
fdt_translate_address() to file scope.

Acked-by: Rob Herring 
Signed-off-by: Peter Hurley 
Signed-off-by: Greg Kroah-Hartman

Merge tag 'devicetree-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/glikely/linux

2015-07-02T02:40:18+00:00

Pull devicetree updates from Grant Likely:
 "A whole lot of bug fixes.

  Nothing stands out here except the ability to enable CONFIG_OF on
  every architecture, and an import of a newer version of dtc"

* tag 'devicetree-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/glikely/linux: (22 commits)
  of/irq: Rename "intc_desc" to "of_intc_desc" to fix OF on sh
  of/irq: Fix pSeries boot failure
  Documentation: DT: Fix a typo in the filename "lantiq,-pinumx.txt"
  of: define of_find_node_by_phandle for !CONFIG_OF
  of/address: use atomic allocation in pci_register_io_range()
  of: Add vendor prefix for Zodiac Inflight Innovations
  dt/fdt: add empty versions of early_init_dt_*_memory_arch
  of: clean-up unnecessary libfdt include paths
  of: make unittest select OF_EARLY_FLATTREE instead of depend on it
  of: make CONFIG_OF user selectable
  MIPS: prepare for user enabling of CONFIG_OF
  of/fdt: fix argument name and add comments of unflatten_dt_node()
  of: return NUMA_NO_NODE from fallback of_node_to_nid()
  tps6507x.txt: Remove executable permission
  of/overlay: Grammar s/an negative/a negative/
  of/fdt: Make fdt blob input parameters of unflatten functions const
  of: add helper function to retrive match data
  of: Grammar s/property exist/property exists/
  of: Move OF flags to be visible even when !CONFIG_OF
  scripts/dtc: Update to upstream version 9d3649bd3be245c9
  ...

of/fdt: split off FDT self reservation from memreserve processing

2015-06-02T15:31:25+00:00

This splits off the reservation of the memory occupied by the FDT
binary itself from the processing of the memory reservations it
contains. This is necessary because the physical address of the FDT,
which is needed to perform the reservation, may not be known to the
FDT driver core, i.e., it may be mapped outside the linear direct
mapping, in which case __pa() returns a bogus value.

Cc: Russell King 
Cc: Benjamin Herrenschmidt 
Cc: Paul Mackerras 
Acked-by: Rob Herring 
Acked-by: Mark Rutland 
Acked-by: Catalin Marinas 
Signed-off-by: Ard Biesheuvel 
Signed-off-by: Catalin Marinas

of/fdt: Make fdt blob input parameters of unflatten functions const

2015-05-28T18:00:25+00:00

Operations to unflatten fdt blobs never modify the input blobs, hence
make them const. Now we no longer need to cast arbitrary const data to
"void *" when calling of_fdt_unflatten_tree().

Signed-off-by: Geert Uytterhoeven 
Signed-off-by: Rob Herring

of/fdt: Add endianness helper function for early init code

2015-04-15T00:35:44+00:00

Provide a libfdt-based equivalent for of_device_is_big_endian(), suitable
for use in the early_init_* functions.

Signed-off-by: Kevin Cernekee 
Reviewed-by: Peter Hurley 
Acked-by: Greg Kroah-Hartman 
Signed-off-by: Rob Herring

of: Add memory limiting function for flattened devicetrees

2014-07-30T03:26:45+00:00

Buggy bootloaders may pass bogus memory entries in the devicetree.
Add of_fdt_limit_memory to add an upper bound on the number of
entries that can be present in the devicetree.

Signed-off-by: Laura Abbott 
Tested-by: Andreas Färber 
Signed-off-by: Grant Likely

of: Split early_init_dt_scan into two parts

2014-07-30T03:26:37+00:00

Currently, early_init_dt_scan validates the header, sets the
boot params, and scans for chosen/memory all in one function.
Split this up into two separate functions (validation/setting
boot params in one, scanning in another) to allow for
additional setup between boot params and scanning the memory.

Signed-off-by: Laura Abbott 
Tested-by: Andreas Färber 
[glikely: s/early_init_dt_scan_all/early_init_dt_scan_nodes/]
Signed-off-by: Grant Likely