u-boot.git/drivers/core/regmap.c, branch v2018.09

regmap: add regmap_update_bits() helper

2018-05-08T13:07:40+00:00

Add the regmap_update_bits() to simply the read/modify/write of registers
in a single command. The function is taken from Linux regmap
implementation.

Signed-off-by: Neil Armstrong 
Reviewed-by: Simon Glass

regmap: change regmap_init_mem() to take ofnode instead udevice

2018-05-07T19:49:51+00:00

Currently, regmap_init_mem() takes a udevice. This requires the node
has already been associated with a device. It prevents syscon/regmap
from behaving like those in Linux.

Change the first argumenet to take a device node.

Signed-off-by: Masahiro Yamada 
Acked-by: Neil Armstrong 
Reviewed-by: Simon Glass

regmap: clean up regmap allocation

2018-05-07T19:15:27+00:00

Putting zero length array at the end of struct is a common technique
to embed arbitrary length of members.  There is no good reason to let
regmap_alloc_count() branch by "if (count <= 1)".

As far as I understood the code, regmap->base is an alias of
regmap->ranges[0].start, but it is not helpful but make the code
just ugly.

Rename regmap_alloc_count() to regmap_alloc() because the _count
suffix seems pointless.

Signed-off-by: Masahiro Yamada 
Reviewed-by: Simon Glass 
[trini: fixup cpu_info-rcar.c]
Signed-off-by: Tom Rini

SPDX: Convert all of our single license tags to Linux Kernel style

2018-05-07T13:34:12+00:00

When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini

libfdt: move headers to and

2018-03-05T15:16:28+00:00

Thomas reported U-Boot failed to build host tools if libfdt-devel
package is installed because tools include libfdt headers from
/usr/include/ instead of using internal ones.

This commit moves the header code:
  include/libfdt.h         -> include/linux/libfdt.h
  include/libfdt_env.h     -> include/linux/libfdt_env.h

and replaces include directives:
  #include       -> #include 
  #include   -> #include 

Reported-by: Thomas Petazzoni 
Signed-off-by: Masahiro Yamada

dtoc: Add support for 32 or 64-bit addresses

2017-09-15T11:27:38+00:00

When using 32-bit addresses dtoc works correctly. For 64-bit addresses it
does not since it ignores the #address-cells and #size-cells properties.

Update the tool to use fdt64_t as the element type for reg properties when
either the address or size is larger than one cell. Use the correct value
so that C code can obtain the information from the device tree easily.

Alos create a new type, fdt_val_t, which is defined to either fdt32_t or
fdt64_t depending on the word size of the machine. This type corresponds
to fdt_addr_t and fdt_size_t. Unfortunately we cannot just use those types
since they are defined to phys_addr_t and phys_size_t which use
'unsigned long' in the 32-bit case, rather than 'unsigned int'.

Add tests for the four combinations of address and size values (32/32,
64/64, 32/64, 64/32). Also update existing uses for rk3399 and rk3368
which now need to use the new fdt_val_t type.

Signed-off-by: Simon Glass 

Suggested-by: Heiko Stuebner 
Reported-by: Kever Yang 
Reviewed-by: Philipp Tomsich 
Tested-by: Kever Yang

dm: core: Add functions to obtain node's address/size cells

2017-07-11T16:08:20+00:00

The of_n_addr_cells() and of_n_size_cells() functions are useful for
getting the size of addresses in a node, but in a few places U-Boot needs
to obtain the actual property value for a node without walking up the
stack. Add functions for this and just the existing code to use it.

Add a comment to the existing ofnode functions which do not do the right
thing with a flat tree.

This fixes a problem reading PCI addresses.

Signed-off-by: Simon Glass 
Tested-by: Marcel Ziswiler 
Tested-on: Beaver, Jetson-TK1

dm: regmap: Add support for livetree

2017-06-01T13:03:09+00:00

Modify regmap to support livetree.

Signed-off-by: Simon Glass

dm: core: Replace of_offset with accessor (part 2)

2017-06-01T13:03:04+00:00

At present devices use a simple integer offset to record the device tree
node associated with the device. In preparation for supporting a live
device tree, which uses a node pointer instead, refactor existing code to
access this field through an inline function.

Signed-off-by: Simon Glass

regmap: use fdt address translation

2017-03-22T13:27:19+00:00

In the DTS, the addresses are defined relative to the parent bus. We need
to translate them to get the address as seen by the CPU core.

Signed-off-by: Jean-Jacques Hiblot