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path: root/include/dm/of_access.h
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2020-04-16dm: core: add ofnode and dev function to iterate on node propertyPatrick Delaunay
Add functions to iterate on all property with livetree - dev_read_first_prop - dev_read_next_prop - dev_read_prop_by_prop and - ofnode_get_first_property - ofnode_get_next_property - ofnode_get_property_by_prop And helper: dev_for_each_property For example: struct ofprop property; dev_for_each_property(property, config) { value = dev_read_prop_by_prop(&property, &propname, &len); or: for (res = ofnode_get_first_property(node, &property); !res; res = ofnode_get_next_property(&property)) { value = ofnode_get_property_by_prop(&property, &propname, &len); .... } Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2020-04-16dm: core: support reading a single indexed u32 valueDario Binacchi
The patch adds helper functions to allow reading a single indexed u32 value from a device-tree property containing multiple u32 values, that is an array of integers. Signed-off-by: Dario Binacchi <dariobin@libero.it> Reviewed-by: Simon Glass <sjg@chromium.org>
2019-02-08dm: core: Add of_alias_get_highest_id()Michal Simek
The same functionality was added to Linux for i2c bus registration with this commit message: " of: base: add function to get highest id of an alias stem I2C supports adding adapters using either a dynamic or fixed id. The latter is provided by aliases in the DT case. To prevent id collisions of those two types, install this function which gives us the highest fixed id, so we can then let the dynamically created ones come after this highest number. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Wolfram Sang <wsa@the-dreams.de> " Add it also to U-Boot for DM I2C support. Signed-off-by: Michal Simek <michal.simek@xilinx.com> Reviewed-by: Heiko Schocher <hs@denx.de> Reviewed-by: Simon Glass <sjg@chromium.org>
2018-09-18ofnode: add ofnode_by_prop_value()Jens Wiklander
Adds ofnode_by_prop_value() to search for nodes with a given property and value, an ofnode version of fdt_node_offset_by_prop_value(). Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org> Reviewed-by: Simon Glass <sjg@chromium.org>
2018-07-09dm: core: Add ofnode function to read a 64-bit intSimon Glass
We have a 32-bit version of this function. Add a 64-bit version as well so we can easily read 64-bit ints from the device tree. Signed-off-by: Simon Glass <sjg@chromium.org>
2018-05-07SPDX: Convert all of our single license tags to Linux Kernel styleTom Rini
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 <trini@konsulko.com>
2017-07-28dm: core: add ofnode_count_phandle_with_args()Patrice Chotard
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>
2017-07-11dm: core: Add functions to obtain node's address/size cellsSimon Glass
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
2017-07-11dm: core: Add ofnode_read_string_count()Simon Glass
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
2017-06-01dm: core: Add livetree access functionsSimon Glass
Add a basic assortment of functions to access the live device tree. These come from Linux v4.9 and are modified for U-Boot to the minimum extent possible. While these functions are now very stable in Linux, it will be possible to merge in fixes if needed. Signed-off-by: Simon Glass <sjg@chromium.org>