linux-kernel - [PATCH 1/2] phy: usbphy: Add dt documentation for Broadcom Cygnus USB PHY driver

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Message-ID: <1424200821-16368-2-git-send-email-arun.ramamurthy@broadcom.com>
Date:	Tue, 17 Feb 2015 11:20:20 -0800
From:	Arun Ramamurthy <arun.ramamurthy@...adcom.com>
To:	Kishon Vijay Abraham I <kishon@...com>,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	"Ian Campbell" <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>, <devicetree@...r.kernel.org>
CC:	Jonathan Richardson <jonathar@...adcom.com>,
	Scott Branden <sbranden@...adcom.com>,
	Ray Jui <rjui@...adcom.com>,
	<linux-arm-kernel@...ts.infradead.org>,
	<bcm-kernel-feedback-list@...adcom.com>,
	<linux-kernel@...r.kernel.org>, Dmitry Torokhov <dtor@...gle.com>,
	Anatol Pomazau <anatol@...gle.com>,
	"Arun Ramamurthy" <arun.ramamurthy@...adcom.com>
Subject: [PATCH 1/2] phy: usbphy: Add dt documentation for Broadcom Cygnus USB PHY driver

Reviewed-by: Ray Jui <rjui@...adcom.com>
Reviewed-by: Scott Branden <sbranden@...adcom.com>
Signed-off-by: Arun Ramamurthy <arun.ramamurthy@...adcom.com>
---
 .../bindings/phy/brcm,cygnus-usb-phy.txt           | 50 ++++++++++++++++++++++
 1 file changed, 50 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/phy/brcm,cygnus-usb-phy.txt

diff --git a/Documentation/devicetree/bindings/phy/brcm,cygnus-usb-phy.txt b/Documentation/devicetree/bindings/phy/brcm,cygnus-usb-phy.txt
new file mode 100644
index 0000000..f218fae
--- /dev/null
+++ b/Documentation/devicetree/bindings/phy/brcm,cygnus-usb-phy.txt
@@ -0,0 +1,50 @@
+BROADCOM CYGNUS USB PHY
+
+Required Properties:
+	- compatible:  brcm,cygnus-usb-phy
+	- reg : usbphy_regs - Base address of phy registers
+			usb2h_idm_regs - Base address of host idm registers
+			usb2d_idm_regs - Base address of device idm registers
+	 - num_phys : Number of phys available
+	 - #phy-cells must be 2
+The node that uses the phy must provide two integers, the first indicates the
+port and the second indicates whether its host or device. The second integer
+is 0 for device and 1 for host
+
+NOTE: port 0 and port 1 are host only and port 2 can be configured for host or device.
+
+Example of phy :
+	usbphy0: usbphy@...301c000 {
+		#phy-cells = <2>;
+		num_phys = <3>;
+		compatible = "brcm,cygnus-usb-phy";
+		reg = <0x0301c000 0x2000>,
+		      <0x18115000 0x1000>,
+		      <0x18111000 0x1000>;
+		status = "okay";
+	};
+
+Example of node using the phy:
+
+	/* This nodes declares  port 0
+	and port 1 as host*/
+
+	ehci0: usb@...8048000 {
+		compatible = "generic-ehci";
+		reg = <0x18048000 0x100>;
+		interrupts = <GIC_SPI 72 IRQ_TYPE_LEVEL_HIGH>;
+		phys = <&usbphy0 0 1 &usbphy0 1>;
+		phy-names = "usbp0","usbp1";
+		status = "okay";
+	};
+
+	/* This node declares port 2 phy
+	and configures it for device */
+
+	usbd_udc_dwc1: usbd_udc_dwc@...804c000 {
+		compatible = "iproc-udc";
+		reg = <0x1804c000 0x2000>;
+		interrupts = <GIC_SPI 123 IRQ_TYPE_LEVEL_HIGH>;
+		phys = <&usbphy0 2 0>;
+		phy-names = "usb";
+	};
-- 
2.3.0

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