[PATCH 4/5] dt-bindings: usb: dwc3: of-simple: add compatible for HiSi

John Stultz
2019-09-25T23:42:23Z

Add necessary compatible flag for HiSi's DWC3 so
dwc3-of-simple will probe.

Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Felipe Balbi <balbi@kernel.org>
Cc: Andy Shevchenko <andy.shevchenko@gmail.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Yu Chen <chenyu56@huawei.com>
Cc: Matthias Brugger <matthias.bgg@gmail.com>
Cc: Chunfeng Yun <chunfeng.yun@mediatek.com>
Cc: linux-usb@vger.kernel.org
Cc: devicetree@vger.kernel.org
Signed-off-by: John Stultz <john.stultz@linaro.org>
---
.../devicetree/bindings/usb/hisi,dwc3.txt | 52 +++++++++++++++++++
1 file changed, 52 insertions(+)
create mode 100644 Documentation/devicetree/bindings/usb/hisi,dwc3.txt

diff --git a/Documentation/devicetree/bindings/usb/hisi,dwc3.txt b/Documentation/devicetree/bindings/usb/hisi,dwc3.txt
new file mode 100644
index 000000000000..dc31b8a3c006
--- /dev/null
+++ b/Documentation/devicetree/bindings/usb/hisi,dwc3.txt
@@ -0,0 +1,52 @@
+HiSi SuperSpeed DWC3 USB SoC controller
+
+Required properties:
+- compatible: should contain "hisilicon,hi3660-dwc3" for HiSi SoC
+- clocks: A list of phandle + clock-specifier pairs for the
+ clocks listed in clock-names
+- clock-names: Should contain the following:
+ "clk_usb3phy_ref" Phy reference clk
+ "aclk_usb3otg" USB3 OTG aclk
+
+- assigned-clocks: Should be:
+ HI3660_ACLK_GATE_USB3OTG
+- assigned-clock-rates: Should be:
+ 229Mhz (229000000) for HI3660_ACLK_GATE_USB3OTG
+
+Optional properties:
+- resets: Phandle to reset control that resets core and wrapper.
+
+Required child node:
+A child node must exist to represent the core DWC3 IP block. The name of
+the node is not important. The content of the node is defined in dwc3.txt.
+
+Example device nodes:
+
+ usb3: hisi_dwc3 {
+ compatible = "hisilicon,hi3660-dwc3";
+ #address-cells = <2>;
+ #size-cells = <2>;
+ ranges;
+
+ clocks = <&crg_ctrl HI3660_CLK_ABB_USB>,
+ <&crg_ctrl HI3660_ACLK_GATE_USB3OTG>;
+ clock-names = "clk_usb3phy_ref", "aclk_usb3otg";
+
+ assigned-clocks = <&crg_ctrl HI3660_ACLK_GATE_USB3OTG>;
+ assigned-clock-rates = <229 000 000>;
+ resets = <&crg_rst 0x90 8>,
+ <&crg_rst 0x90 7>,
+ <&crg_rst 0x90 6>,
+ <&crg_rst 0x90 5>;
+
+ dwc3: dwc3@ff100000 {
+ compatible = "snps,dwc3";
+ reg = <0x0 0xff100000 0x0 0x100000>;
+ interrupts = <0 159 4>, <0 161 4>;
+ phys = <&usb_phy>;
+ phy-names = "usb3-phy";
+ dr_mode = "otg";
+
+ ...
+ };
+ };
--
2.17.1