target/linux/gemini/patches-4.19/0014-usb-host-add-DT-bindings-for-faraday-fotg2.patch

   1 From f9cfc45c57227448d4239e9582258587aacf34e7 Mon Sep 17 00:00:00 2001
   2 From: Hans Ulli Kroll <ulli.kroll@googlemail.com>
   3 Date: Wed, 8 Feb 2017 21:00:09 +0100
   4 Subject: [PATCH 14/18] usb: host: add DT bindings for faraday fotg2
   5
   6 This adds device tree bindings for the Faraday FOTG2
   7 dual-mode host controller.
   8
   9 Cc: devicetree@vger.kernel.org
  10 Signed-off-by: Hans Ulli Kroll <ulli.kroll@googlemail.com>
  11 Acked-by: Rob Herring <robh@kernel.org>
  12 Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
  13 ---
  14 ChangeLog v1->v2:
  15 - Changed "OTH" to "OTG"
  16 - Collected Rob's ACK.
  17 - I don't see any problem with these bindings, but IIRC Hans
  18   had some reservations for the OTG mode, maybe we can strip
  19   some properties like the mini-usb thing and use as a starter
  20   so we can add host mode at least?
  21 ---
  22  .../bindings/usb/faraday,fotg210.txt          | 35 +++++++++++++++++++
  23  1 file changed, 35 insertions(+)
  24  create mode 100644 Documentation/devicetree/bindings/usb/faraday,fotg210.txt
  25
  26 --- /dev/null
  27 +++ b/Documentation/devicetree/bindings/usb/faraday,fotg210.txt
  28 @@ -0,0 +1,35 @@
  29 +Faraday FOTG Host controller
  30 +
  31 +This OTG-capable USB host controller is found in Cortina Systems
  32 +Gemini and other SoC products.
  33 +
  34 +Required properties:
  35 +- compatible: should be one of:
  36 +  "faraday,fotg210"
  37 +  "cortina,gemini-usb", "faraday,fotg210"
  38 +- reg: should contain one register range i.e. start and length
  39 +- interrupts: description of the interrupt line
  40 +
  41 +Optional properties:
  42 +- clocks: should contain the IP block clock
  43 +- clock-names: should be "PCLK" for the IP block clock
  44 +
  45 +Required properties for "cortina,gemini-usb" compatible:
  46 +- syscon: a phandle to the system controller to access PHY registers
  47 +
  48 +Optional properties for "cortina,gemini-usb" compatible:
  49 +- cortina,gemini-mini-b: boolean property that indicates that a Mini-B
  50 +  OTG connector is in use
  51 +- wakeup-source: see power/wakeup-source.txt
  52 +
  53 +Example for Gemini:
  54 +
  55 +usb@68000000 {
  56 +       compatible = "cortina,gemini-usb", "faraday,fotg210";
  57 +       reg = <0x68000000 0x1000>;
  58 +       interrupts = <10 IRQ_TYPE_LEVEL_HIGH>;
  59 +       clocks = <&cc 12>;
  60 +       clock-names = "PCLK";
  61 +       syscon = <&syscon>;
  62 +       wakeup-source;
  63 +};