65 lines
2.0 KiB
Diff
65 lines
2.0 KiB
Diff
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From 7b6f3bd96b2507e209847d06ece1ecdb21f9abf7 Mon Sep 17 00:00:00 2001
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From: Icenowy Zheng <icenowy@aosc.io>
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Date: Mon, 25 Dec 2017 12:08:01 +0800
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Subject: [PATCH 003/153] Doc:dt-bindings:usb: add binding for DWC3 controller
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on Allwinner SoC
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The Allwinner H6 SoC uses DWC3 controller for USB3.
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Add its device tree binding document.
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Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
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---
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.../bindings/usb/allwinner,dwc3.txt | 39 +++++++++++++++++++
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1 file changed, 39 insertions(+)
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create mode 100644 Documentation/devicetree/bindings/usb/allwinner,dwc3.txt
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diff --git a/Documentation/devicetree/bindings/usb/allwinner,dwc3.txt b/Documentation/devicetree/bindings/usb/allwinner,dwc3.txt
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new file mode 100644
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index 000000000..3f7714636
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--- /dev/null
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+++ b/Documentation/devicetree/bindings/usb/allwinner,dwc3.txt
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@@ -0,0 +1,39 @@
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+Allwinner SuperSpeed DWC3 USB SoC controller
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+
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+Required properties:
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+- compatible: should contain "allwinner,sun50i-h6-dwc3" for H6 SoC
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+- clocks: A list of phandle + clock-specifier pairs for the
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+ clocks listed in clock-names
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+- clock-names: Should contain the following:
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+ "bus" The bus clock of the DWC3 part
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+- resets: A list of phandle + reset-specifier pairs for the
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+ resets listed in reset-names
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+- reset-names: Should contain the following:
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+ "bus" The bus reset of the DWC3 part
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+
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+Required child node:
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+A child node must exist to represent the core DWC3 IP block. The name of
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+the node is not important. The content of the node is defined in dwc3.txt.
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+
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+Phy documentation is provided in the following places:
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+Documentation/devicetree/bindings/phy/sun50i-usb3-phy.txt
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+
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+Example device nodes:
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+ usb3: usb@5200000 {
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+ compatible = "allwinner,sun50i-h6-dwc3";
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+ #address-cells = <1>;
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+ #size-cells = <1>;
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+ ranges;
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+ clocks = <&ccu CLK_BUS_XHCI>;
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+ clock-names = "bus";
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+ resets = <&ccu RST_BUS_XHCI>;
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+ reset-names = "bus";
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+
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+ dwc3: dwc3 {
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+ compatible = "snps,dwc3";
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+ reg = <0x5200000 0x10000>;
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+ interrupts = <GIC_SPI 26 IRQ_TYPE_LEVEL_HIGH>;
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+ phys = <&usb3phy>;
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+ phy-names = "usb3-phy";
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+ };
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+ };
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--
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2.35.3
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