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Message-ID: <1559648359-6569-2-git-send-email-min.guo@mediatek.com>
Date:   Tue, 4 Jun 2019 19:39:14 +0800
From:   <min.guo@...iatek.com>
To:     Bin Liu <b-liu@...com>, Rob Herring <robh+dt@...nel.org>
CC:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Mark Rutland <mark.rutland@....com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Alan Stern <stern@...land.harvard.edu>,
        <chunfeng.yun@...iatek.com>, <linux-usb@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>, <tony@...mide.com>,
        <hdegoede@...hat.com>, Min Guo <min.guo@...iatek.com>
Subject: [PATCH v6 1/6] dt-bindings: usb: musb: Add support for MediaTek musb controller

From: Min Guo <min.guo@...iatek.com>

This adds support for MediaTek musb controller in
host, peripheral and otg mode.

Signed-off-by: Min Guo <min.guo@...iatek.com>
---
changes in v6:
1. Modify usb connector child node

changes in v5:
suggested by Rob:
1. Modify compatible as 
- compatible : should be one of:
               "mediatek,mt-2701"
               ...
               followed by "mediatek,mtk-musb"
2. Add usb connector child node

changes in v4:
suggested by Sergei:
1. String alignment

changes in v3:
1. no changes

changes in v2:
suggested by Bin:
1. Modify DRC to DRD
suggested by Rob:
2. Drop the "<soc-model>-musb" in compatible
3. Remove phy-names
4. Add space after comma in clock-names
---
 .../devicetree/bindings/usb/mediatek,musb.txt      | 55 ++++++++++++++++++++++
 1 file changed, 55 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/usb/mediatek,musb.txt

diff --git a/Documentation/devicetree/bindings/usb/mediatek,musb.txt b/Documentation/devicetree/bindings/usb/mediatek,musb.txt
new file mode 100644
index 0000000..7434299
--- /dev/null
+++ b/Documentation/devicetree/bindings/usb/mediatek,musb.txt
@@ -0,0 +1,55 @@
+MediaTek musb DRD/OTG controller
+-------------------------------------------
+
+Required properties:
+ - compatible      : should be one of:
+                     "mediatek,mt-2701"
+                     ...
+                     followed by "mediatek,mtk-musb"
+ - reg             : specifies physical base address and size of
+                     the registers
+ - interrupts      : interrupt used by musb controller
+ - interrupt-names : must be "mc"
+ - phys            : PHY specifier for the OTG phy
+ - dr_mode         : should be one of "host", "peripheral" or "otg",
+                     refer to usb/generic.txt
+ - clocks          : a list of phandle + clock-specifier pairs, one for
+                     each entry in clock-names
+ - clock-names     : must contain "main", "mcu", "univpll"
+                     for clocks of controller
+
+Optional properties:
+ - power-domains   : a phandle to USB power domain node to control USB's
+                     MTCMOS
+
+Required child nodes:
+ usb connector node as defined in bindings/connector/usb-connector.txt
+Optional properties:
+ - id-gpios        : input GPIO for USB ID pin.
+ - vbus-gpios      : input GPIO for USB VBUS pin.
+ - vbus-supply     : reference to the VBUS regulator, needed when supports
+                     dual-role mode
+
+Example:
+
+usb2: usb@...00000 {
+	compatible = "mediatek,mt2701-musb",
+		     "mediatek,mtk-musb";
+	reg = <0 0x11200000 0 0x1000>;
+	interrupts = <GIC_SPI 32 IRQ_TYPE_LEVEL_LOW>;
+	interrupt-names = "mc";
+	phys = <&u2port2 PHY_TYPE_USB2>;
+	dr_mode = "otg";
+	clocks = <&pericfg CLK_PERI_USB0>,
+		 <&pericfg CLK_PERI_USB0_MCU>,
+		 <&pericfg CLK_PERI_USB_SLV>;
+	clock-names = "main","mcu","univpll";
+	power-domains = <&scpsys MT2701_POWER_DOMAIN_IFR_MSC>;
+	connector{
+		compatible = "linux,typeb-conn-gpio", "usb-b-connector";
+		label = "micro-USB";
+		type = "micro";
+		id-gpios = <&pio 44 GPIO_ACTIVE_HIGH>;
+		vbus-supply = <&usb_vbus>;
+	};
+};
-- 
1.9.1

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