This is a continutation of my phandle remapping/nexus node series from a while ago. I finally got around to writing the documentation in the spec for this, but it's really rough around the edges and could use some review/suggestions to get it into shape. Please review!
This is one small chunk of work related to DT overlays for expansion boards. It would be good to have a way to expose #<list>-cells types of providers through a connector in a standard way. So we introduce a way to make "nexus" nodes for these types of properties to remap the consumer number space to the other side of the connector's number space. It's basically a copy of the interrupt nexus implementation, but without the address space matching design and interrupt-parent walking. Changes since v3: * Added devicetree spec patch * Rebased to v4.13-rc1 Changes since v2: * Picked up Linus' ack on the gpio core patch * Made const stack arrays static (Rob Herring) * Used of_property_read_u32() instead of open coding (Rob Herring) Changes since v1: * Addition of optional pass-thru parameter * Reduction of strings passed to 1 instead of 3 (or 4 now) * Updated gpio patch for the new function signature * Updated test-case for new funciton signature and pass-thru parameter * Updated kernel-doc to be correct and highlighted difference between this API and of_parse_phandle_with_args() Stephen Boyd (3): Document nexus nodes/specifier remapping of: Support parsing phandle argument lists through a nexus node of: unittest: Add phandle remapping test gpio: Support gpio nexus dt bindings Kernel: drivers/gpio/gpiolib-of.c | 4 +- drivers/of/base.c | 184 ++++++++++++++++++++++++++++ drivers/of/unittest-data/testcases.dts | 11 ++ drivers/of/unittest-data/tests-phandle.dtsi | 25 ++++ drivers/of/unittest.c | 120 ++++++++++++++++++ include/linux/of.h | 12 ++ 6 files changed, 354 insertions(+), 2 deletions(-) Spec: source/devicetree-basics.rst | 208 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 208 insertions(+) -- 2.7.4