u-boot.git/include/fdt_support.h, branch v2016.03

fdt: prevent clearing memory node if there are no banks

2015-07-20T13:21:47+00:00

Avoid clearing the reg property in the memory DT node if no memory
banks have been specified for a board (CONFIG_NR_DRAM_BANKS == 0).
This allows boards to let U-Boot skip the DT memory tinkering in case
other firmware has already setup the node properly before.
This should be safe as all callers of fdt_fixup_memory_banks that use
a computed  value put at least 1 in there.
Add some documentation comments to the header file.

Signed-off-by: Andre Przywara 
Acked-by: Simon Glass

fdt: Documentation for a few support functions aside their prototypes

2015-06-05T14:32:58+00:00

This instroduces comments that explain the purpose, parameters and return codes
of a few fdt support functions, that are used to fill the fdt.

Signed-off-by: Paul Kocialkowski 
Acked-by: Simon Glass

fdt: Pass the device serial number through devicetree

2015-06-05T14:32:07+00:00

Before device-tree, the device serial number used to be passed to the kernel
using ATAGs (on ARM). This is now deprecated and all the handover to the kernel
should now be done using device-tree. Thus, this passes the serial-number
property to the kernel using the serial-number property of the root node, as
expected by the kernel.

The serial number is a string that somewhat represents the device's serial
number. It might come from some form of storage (e.g. an eeprom) and be
programmed at factory-time by the manufacturer or come from identification
bits available in e.g. the SoC.

Signed-off-by: Paul Kocialkowski 
Reviewed-by: Simon Glass

fdt: add new fdt_fixup_display function to configure display

2015-04-22T12:39:06+00:00

Add 'fdt_fixup_display' function to fixup device-tree native-mode property
of display-timings node to select timings for a specific display.
This is useful if a device-tree has configurations for multiple
display timings for undetectable displays.

see kernel Documentation/devicetree/bindings/video/display-timing.txt

Signed-off-by: Tim Harvey 
Acked-by: Simon Glass

cmd_fdt: Actually fix fdt command in sandbox

2015-02-18T03:19:16+00:00

Commit 90bac29a76bc8d649b41a55f2786c0abef9bb2c1 claims to fix this bug
that was introduced in commit a92fd6577ea17751ead9b50243e3c562125cf581
but doesn't actually make the change that the commit message describes.

Actually fix the bug this time.

Signed-off-by: Joe Hershberger 
Acked-by: Simon Glass

Merge branch 'master' of http://git.denx.de/u-boot-sunxi

2014-11-26T16:21:16+00:00

fdt_support: Add a fdt_setup_simplefb_node helper function

2014-11-25T12:38:46+00:00

Add a generic helper to fill and enable simplefb nodes.

The first user of this will be the sunxi display code.

lcd_dt_simplefb_configure_node is also a good candidate to be converted
to use this, but that requires someone to run some tests first, as
lcd_dt_simplefb_configure_node does not honor #address-cells and #size-cells,
but simply assumes 1 and 1 for both.

Signed-off-by: Hans de Goede 
Tested-by: Stephen Warren 
Acked-by: Simon Glass

fdt: Add ft_system_setup() function for system device tree additions

2014-11-21T03:43:18+00:00

Add an additional function for adding information to the device tree before
booting. This permits additions which are not board-specific.

Signed-off-by: Simon Glass 
Acked-by: Anatolij Gustschin 
Reviewed-by: Tom Rini

fdt: Tidy up error handling in image_setup_libfdt()

2014-11-21T03:43:17+00:00

The message about needing to reset should be printed no matter what error
is printed. Also, an error should always be printed.

Signed-off-by: Simon Glass 
Acked-by: Anatolij Gustschin 
Reviewed-by: Tom Rini

fdt: Export the fdt_find_or_add_subnode() function

2014-11-21T03:43:17+00:00

This function is useful for ensuring that a node exists. Export it so it
can be used more widely.

Signed-off-by: Simon Glass 
Acked-by: Anatolij Gustschin 
Reviewed-by: Tom Rini