dm: core: Add ofnode_for_each_subnode()

Add a convenience macro to iterate over subnodes of a node. Make use of
this where appropriate in the code.

Signed-off-by: Simon Glass <sjg@chromium.org>

Merge git://git.denx.de/u-boot-uniphier

- add {ofnode,dev}_read_resource_byname
- provide DT probe hook to Denali NAND driver
- update clk/reset driver
- update DT
- misc cleanups

ofnode: add {ofnode, dev}_read_resource_byname()

Linux supports platform_get_resource_byname() to look up a resource
by name.

We want a similar helper. It is useful when a device node has named
re

ofnode: add {ofnode, dev}_read_resource_byname()

Linux supports platform_get_resource_byname() to look up a resource
by name.

We want a similar helper. It is useful when a device node has named
register regions.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

show more ...

Merge git://git.denx.de/u-boot-usb

dm: core: add ofnode_count_phandle_with_args()

This function is usefull to get phandle number contained
in a property list.
For example, this allows to allocate the right amount
of memory to keep c

dm: core: add ofnode_count_phandle_with_args()

This function is usefull to get phandle number contained
in a property list.
For example, this allows to allocate the right amount
of memory to keep clock's reference contained into the
"clocks" property.

To implement it, either of_count_phandle_with_args() or
fdtdec_parse_phandle_with_args() are used respectively
for live tree and flat tree.
By passing index = -1, these 2 functions returns the
number of phandle contained into the property list.

Add also the dev_count_phandle_with_args() based on
ofnode_count_phandle_with_args()

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

show more ...

dm: core: Add ofnode_read_resource()

We sometimes need to read a resource from an arbitrary node. In any case
for consistency we should not put the live-tree switching code in
a dev_read_...() funct

dm: core: Add ofnode_read_resource()

We sometimes need to read a resource from an arbitrary node. In any case
for consistency we should not put the live-tree switching code in
a dev_read_...() function. Update this to suit.

Signed-off-by: Simon Glass <sjg@chromium.org>
Tested-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Tested-on: Beaver, Jetson-TK1
Tested-by: Stephen Warren <swarren@nvidia.com>

show more ...

Merge git://git.denx.de/u-boot-dm

dm: ofnode: rename ofnode_read_prop() to ofnode_get_property()

This function returns the pointer to the value of a node property.
The current name ofnode_read_prop() is confusing. Follow the naming

dm: ofnode: rename ofnode_read_prop() to ofnode_get_property()

This function returns the pointer to the value of a node property.
The current name ofnode_read_prop() is confusing. Follow the naming
of_get_property() from Linux.

The return type (const u32 *) is wrong. DT property values can be
strings as well as integers. This is why of_get_property/fdt_getprop
returns an opaque pointer.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Simon Glass <sjg@chromium.org>

show more ...

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

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 n

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

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 <sjg@chromium.org>
Tested-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Tested-on: Beaver, Jetson-TK1

show more ...

dm: core: Add ofnode_read_string_count()

This provides a way to find the number of strings in a string list. Add it
and also fix up the comment for ofnode_read_string_index().

Signed-off-by: Simon

dm: core: Add ofnode_read_string_count()

This provides a way to find the number of strings in a string list. Add it
and also fix up the comment for ofnode_read_string_index().

Signed-off-by: Simon Glass <sjg@chromium.org>
Tested-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Tested-on: Beaver, Jetson-TK1

show more ...

dm: core: Add address operations on device tree references

Add functions to add addresses in the device tree using ofnode references.

Signed-off-by: Simon Glass <sjg@chromium.org>

dm: core: Add operations on device tree references

Since U-Boot supports both a live tree and a flat tree, we need an easy
way to access the tree without worrying about which is currently active.
To

dm: core: Add operations on device tree references

Since U-Boot supports both a live tree and a flat tree, we need an easy
way to access the tree without worrying about which is currently active.
To support this, U-Boot has the concept of an ofnode, which can refer
either to a live tree node or a flat tree node.

For the live tree, the reference contains a pointer to the node (struct
device_node *) or NULL if the node is invalid. For the flat tree, the
reference contains the node offset or -1 if the node is invalid.

Add a basic set of operations using ofnodes. These are implemented by
using either libfdt functions (in the case of a flat DT reference) or
the live-tree of_...() functions.

Note that it is not possible to have both live and flat references active
at the same time. As soon as the live tree is available, everything in
U-Boot should switch to using that. This avoids confusion and allows us to
assume that the type of a reference is simply based on whether we have a
live tree yet, or not.

Signed-off-by: Simon Glass <sjg@chromium.org>

show more ...

dm: core: Add ofnode to represent device tree nodes

With live tree we need a struct device_node * to reference a node. With
the existing flat tree, we need an int offset. We need to unify these into

dm: core: Add ofnode to represent device tree nodes

With live tree we need a struct device_node * to reference a node. With
the existing flat tree, we need an int offset. We need to unify these into
a single value which can represent both.

Add an ofnode union for this and adjust existing code to move to this.

Signed-off-by: Simon Glass <sjg@chromium.org>

show more ...