From: Rafał Miłecki <rafal@milecki.pl>

This version of my patchset (V5) differs by renaming #source-cells to the
#trigger-source-cells and documenting it in the leds/common.txt.

I'd epxect both patches to go through Greg's usb.git if accepted.

For a reference (and before someome comes with already rejected solution) see
below history of this work:

1) [PATCH V2] leds: trigger: Introduce an USB port trigger
My initial try of adding "usb-ports" property. Rob said it should be more
generic.

2) [PATCH 1/2] dt-bindings: leds: document new usb-ports property
Rob still didn't like it due to being USB specific.

3) [PATCH V2 1/2] dt-bindings: leds: document new led-triggers property
Jacek didn't like it's more generic than what Linux can already support. Later
we agreed (?) that Linux limitations shouldn't influence DT structure.
Jacek still wanted a specific trigger but Rob said he won't accept something
specific to the USB.
Jacek suggested "trigger-sources" and Rob agreed on the name.
Jacek suggested trying triggers as separated nodes.

4) [PATCH 1/4] dt-bindings: leds: document property for LED triggers
This patch was trying to use separated nodes for triggers, e.g.:
foo-trigger { trigger-type = "foo"; };
Rob didn't like this extra level of indirection. He said Linux drivers shouldn't
define/influence the binding.

So finally I came with this patchset. It doesn't try to use separated nodes for
triggers anymore and it uses the name that was mostly accepted I think. It
should be generic and not influenced by Linux design.

Rafał Miłecki (3):
  dt-bindings: leds: document new trigger-sources property
  usb: core: read USB ports from DT in the usbport LED trigger driver
  ARM: BCM53573: Specify ports for USB LED for Tenda AC9

 Documentation/devicetree/bindings/leds/common.txt | 35 +++++++++++++-
 arch/arm/boot/dts/bcm47189-tenda-ac9.dts          |  1 +
 arch/arm/boot/dts/bcm53573.dtsi                   |  4 ++
 drivers/usb/core/ledtrig-usbport.c                | 56 +++++++++++++++++++++++
 4 files changed, 94 insertions(+), 2 deletions(-)

-- 
2.11.0