usb: dwc3: rockchip: delete unused binding documentation

We have cherry-pick new binding documentation for dwc3
from upstream, so delete the legacy one.

Change-Id: I292447c96c741445669139478c769e356d1b8d9e
Signed-off-by: William Wu <wulf@rock-chips.com>

diff --git a/Documentation/devicetree/bindings/usb/dwc3-rockchip.txt b/Documentation/devicetree/bindings/usb/dwc3-rockchip.txt
deleted file mode 100644 (file)
index 870a164..0000000
--- a/Documentation/devicetree/bindings/usb/dwc3-rockchip.txt
+++ /dev/null
@@ -1,50 +0,0 @@
-Rockchip SuperSpeed DWC3 USB SoC controller
-
-Required properties:
-- compatible:  should contain "rockchip,dwc3"
-- clocks:              A list of phandle + clock-specifier pairs for the
-                               clocks listed in clock-names
-- clock-names: Should contain the following:
-  "clk_usb3otg0_ref"   Controller reference clk
-  "clk_usb3otg0_suspend"Controller suspend clk, can use 24 MHz or 32 KHz
-  "aclk_usb3"          Master/Core clock, have to be >= 62.5 MHz for SS operation
-
-
-Optional clocks:
-  "aclk_usb3otg0"      Aclk for specific usb controller clock.
-  "aclk_usb3_rksoc_axi_perf"  USB AXI perf clock.  Not present on all platforms.
-  "aclk_usb3_noc"      USB noc clock. Not present on all platforms.
-  "aclk_usb3_grf"      USB grf clock.  Not present on all platforms.
-
-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.
-
-Phy documentation is provided in the following places:
-
-Example device nodes:
-
-       usbdrd3_0: usb@fe800000 {
-               compatible = "rockchip,dwc3";
-               clocks = <&cru SCLK_USB3OTG0_REF>, <&cru SCLK_USB3OTG0_SUSPEND>,
-                        <&cru ACLK_USB3OTG0>, <&cru ACLK_USB3_RKSOC_AXI_PERF>,
-                        <&cru ACLK_USB3>, <&cru ACLK_USB3_NOC>,
-                        <&cru ACLK_USB3_GRF>;
-               clock-names = "clk_usb3otg0_ref", "clk_usb3otg0_suspend",
-                             "aclk_usb3otg0", "aclk_usb3_rksoc_axi_perf",
-                             "aclk_usb3", "aclk_usb3_noc",
-                             "aclk_usb3_grf";
-               #address-cells = <2>;
-               #size-cells = <2>;
-               ranges;
-               status = "disabled";
-               usbdrd_dwc3_0: dwc3 {
-                       compatible = "snps,dwc3";
-                       reg = <0x0 0xfe800000 0x0 0x100000>;
-                       interrupts = <GIC_SPI 105 IRQ_TYPE_LEVEL_HIGH>;
-                       dr_mode = "otg";
-                       tx-fifo-resize;
-                       status = "disabled";
-               };
-       };
-