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.
The first patch implements a generic method to do this, and the second patch adds a unit test for it. The third patch is more of an example than anything else. It shows how we would modify frameworks to use the new API. 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): of: Support parsing phandle argument lists through a nexus node of: unittest: Add phandle remapping test gpio: Support gpio nexus dt bindings 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(-) -- 2.10.0.297.gf6727b0
