linux-kernel - [PATCH v2 1/3] Add DT bindings documentation for NS2 USB DRD phy

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Message-Id: <1484742004-6792-2-git-send-email-raviteja.garimella@broadcom.com>
Date:   Wed, 18 Jan 2017 17:50:02 +0530
From:   Raviteja Garimella <raviteja.garimella@...adcom.com>
To:     Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Kishon Vijay Abraham I <kishon@...com>,
        Ray Jui <rjui@...adcom.com>,
        Scott Branden <sbranden@...adcom.com>,
        Jon Mason <jonmason@...adcom.com>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will.deacon@....com>
Cc:     devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        bcm-kernel-feedback-list@...adcom.com,
        linux-arm-kernel@...ts.infradead.org
Subject: [PATCH v2 1/3] Add DT bindings documentation for NS2 USB DRD phy

This patch adds documentation for NS2 DRD Phy driver DT bindings

Signed-off-by: Raviteja Garimella <raviteja.garimella@...adcom.com>
Acked-by: Rob Herring <robh@...nel.org>
---
 .../devicetree/bindings/phy/brcm,ns2-drd-phy.txt   | 30 ++++++++++++++++++++++
 1 file changed, 30 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/phy/brcm,ns2-drd-phy.txt

diff --git a/Documentation/devicetree/bindings/phy/brcm,ns2-drd-phy.txt b/Documentation/devicetree/bindings/phy/brcm,ns2-drd-phy.txt
new file mode 100644
index 0000000..04f063a
--- /dev/null
+++ b/Documentation/devicetree/bindings/phy/brcm,ns2-drd-phy.txt
@@ -0,0 +1,30 @@
+BROADCOM NORTHSTAR2 USB2 (DUAL ROLE DEVICE) PHY
+
+Required properties:
+ - compatible: brcm,ns2-drd-phy
+ - reg: offset and length of the NS2 PHY related registers.
+ - reg-names
+   The below registers must be provided.
+   icfg - for DRD ICFG configurations
+   rst-ctrl - for DRD IDM reset
+   crmu-ctrl - for CRMU core vdd, PHY and PHY PLL reset
+   usb2-strap - for port over current polarity reversal
+ - #phy-cells: Must be 0. No args required.
+ - vbus-gpios: vbus gpio binding
+ - id-gpios: id gpio binding
+
+Refer to phy/phy-bindings.txt for the generic PHY binding properties
+
+Example:
+	usbdrd_phy: phy@...00960 {
+			#phy-cells = <0>;
+			compatible = "brcm,ns2-drd-phy";
+			reg = <0x66000960 0x24>,
+			      <0x67012800 0x4>,
+			      <0x6501d148 0x4>,
+			      <0x664d0700 0x4>;
+			reg-names = "icfg", "rst-ctrl",
+				    "crmu-ctrl", "usb2-strap";
+			id-gpios = <&gpio_g 30 0>;
+			vbus-gpios = <&gpio_g 31 0>;
+	};
-- 
2.1.0