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

From f9cfc45c57227448d4239e9582258587aacf34e7 Mon Sep 17 00:00:00 2001
From: Hans Ulli Kroll <ulli.kroll@googlemail.com>
Date: Wed, 8 Feb 2017 21:00:09 +0100
Subject: [PATCH 14/18] usb: host: add DT bindings for faraday fotg2

This adds device tree bindings for the Faraday FOTG2
dual-mode host controller.

Cc: devicetree@vger.kernel.org
Signed-off-by: Hans Ulli Kroll <ulli.kroll@googlemail.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
ChangeLog v1->v2:
- Changed "OTH" to "OTG"
- Collected Rob's ACK.
- I don't see any problem with these bindings, but IIRC Hans
  had some reservations for the OTG mode, maybe we can strip
  some properties like the mini-usb thing and use as a starter
  so we can add host mode at least?
---
 .../bindings/usb/faraday,fotg210.txt          | 35 +++++++++++++++++++
 1 file changed, 35 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/usb/faraday,fotg210.txt

--- /dev/null
+++ b/Documentation/devicetree/bindings/usb/faraday,fotg210.txt
@@ -0,0 +1,35 @@
+Faraday FOTG Host controller
+
+This OTG-capable USB host controller is found in Cortina Systems
+Gemini and other SoC products.
+
+Required properties:
+- compatible: should be one of:
+  "faraday,fotg210"
+  "cortina,gemini-usb", "faraday,fotg210"
+- reg: should contain one register range i.e. start and length
+- interrupts: description of the interrupt line
+
+Optional properties:
+- clocks: should contain the IP block clock
+- clock-names: should be "PCLK" for the IP block clock
+
+Required properties for "cortina,gemini-usb" compatible:
+- syscon: a phandle to the system controller to access PHY registers
+
+Optional properties for "cortina,gemini-usb" compatible:
+- cortina,gemini-mini-b: boolean property that indicates that a Mini-B
+  OTG connector is in use
+- wakeup-source: see power/wakeup-source.txt
+
+Example for Gemini:
+
+usb@68000000 {
+	compatible = "cortina,gemini-usb", "faraday,fotg210";
+	reg = <0x68000000 0x1000>;
+	interrupts = <10 IRQ_TYPE_LEVEL_HIGH>;
+	clocks = <&cc 12>;
+	clock-names = "PCLK";
+	syscon = <&syscon>;
+	wakeup-source;
+};