linux-kernel - [PATCH 2/6] dt-bindings: phy: Add documentation for NSP USB3 PHY

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Message-Id: <1478683994-12008-3-git-send-email-yendapally.reddy@broadcom.com>
Date:   Wed,  9 Nov 2016 04:33:10 -0500
From:   Yendapally Reddy Dhananjaya Reddy <yendapally.reddy@...adcom.com>
To:     Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Russell King <linux@...linux.org.uk>,
        Ray Jui <rjui@...adcom.com>,
        Scott Branden <sbranden@...adcom.com>,
        Jon Mason <jonmason@...adcom.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Kishon Vijay Abraham I <kishon@...com>
Cc:     bcm-kernel-feedback-list@...adcom.com, netdev@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        Yendapally Reddy Dhananjaya Reddy 
        <yendapally.reddy@...adcom.com>
Subject: [PATCH 2/6] dt-bindings: phy: Add documentation for NSP USB3 PHY

Add documentation for USB3 PHY available in Northstar plus SoC

Signed-off-by: Yendapally Reddy Dhananjaya Reddy <yendapally.reddy@...adcom.com>
---
 .../devicetree/bindings/phy/brcm,nsp-usb3-phy.txt  | 39 ++++++++++++++++++++++
 1 file changed, 39 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/phy/brcm,nsp-usb3-phy.txt

diff --git a/Documentation/devicetree/bindings/phy/brcm,nsp-usb3-phy.txt b/Documentation/devicetree/bindings/phy/brcm,nsp-usb3-phy.txt
new file mode 100644
index 0000000..30cf4b9
--- /dev/null
+++ b/Documentation/devicetree/bindings/phy/brcm,nsp-usb3-phy.txt
@@ -0,0 +1,39 @@
+Broadcom USB3 phy binding northstar plus SoC
+This is a child bus node of "brcm,mdio-mux-nsp" node.
+
+Required mdio bus properties:
+- reg: MDIO Bus number for the MDIO interface
+- #address-cells: must be 1
+- #size-cells: must be 0
+
+Required PHY properties:
+- compatible: should be "brcm,nsp-usb3-phy"
+- reg: Phy address in the MDIO interface
+- usb3-ctrl-syscon: handler of syscon node defining physical address
+  of usb3 control register.
+- #phy-cells: must be 0
+
+Required usb3 control properties:
+- compatible: should be "brcm,nsp-usb3-ctrl"
+- reg: offset and length of the control registers
+
+Example:
+
+	mdio@0 {
+		reg = <0x0>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		usb3_phy: usb3-phy@10 {
+			compatible = "brcm,nsp-usb3-phy";
+			reg = <0x10>;
+			usb3-ctrl-syscon = <&usb3_ctrl>;
+			#phy-cells = <0>;
+			status = "disabled";
+		};
+	}
+
+	usb3_ctrl: syscon@...408 {
+		compatible = "brcm,nsp-usb3-ctrl", "syscon";
+		reg = <0x104408 0x3fc>;
+	};
-- 
2.1.0