[PATCH 4/4] Documentation: usb: dwc3: qcom: Add TCSR mux usage

[Andy Gross <agross@codeaurora.org>]

This patch adds documentation for the optional syscon-tcsr property in the
Qualcomm DWC3 node.  The syscon-tcsr specifies the register and bit used to
configure the TCSR USB phy mux register.

Signed-off-by: Andy Gross <agross@codeaurora.org>
---
 Documentation/devicetree/bindings/usb/qcom,dwc3.txt | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/Documentation/devicetree/bindings/usb/qcom,dwc3.txt b/Documentation/devicetree/bindings/usb/qcom,dwc3.txt
index ca164e7..dfa222d 100644
--- a/Documentation/devicetree/bindings/usb/qcom,dwc3.txt
+++ b/Documentation/devicetree/bindings/usb/qcom,dwc3.txt
@@ -8,6 +8,10 @@ Required properties:
   "core"		Master/Core clock, have to be >= 125 MHz for SS
 				operation and >= 60MHz for HS operation
 
+Optional properties:
+- syscon-tcsr	Specifies TCSR handle, register offset, and bit position for
+			configuring the phy mux setting.
+
 Optional clocks:
   "iface"		System bus AXI clock.  Not present on all platforms
   "sleep"		Sleep clock, used when USB3 core goes into low
@@ -22,6 +26,11 @@ Documentation/devicetree/bindings/phy/qcom,dwc3-usb-phy.txt
 
 Example device nodes:
 
+		tcsr: syscon@1a400000 {
+			compatible = "qcom,tcsr-ipq8064", "syscon";
+			reg = <0x1a400000 0x100>;
+		};
+
 		hs_phy: phy@100f8800 {
 			compatible = "qcom,dwc3-hs-usb-phy";
 			reg = <0x100f8800 0x30>;
@@ -51,6 +60,8 @@ Example device nodes:
 
 			ranges;
 
+			syscon-tcsr = <&tcsr 0xb0 0x1>;
+
 			status = "ok";
 
 			dwc3@10000000 {
-- 
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