TI platforms have a wrapper module around the Cadence USB3 controller. Add binding information for that.
Cc: Rob Herring <[email protected]> Signed-off-by: Roger Quadros <[email protected]> Signed-off-by: Sekhar Nori <[email protected]> --- .../devicetree/bindings/usb/ti,j721e-usb.txt | 52 +++++++++++++++++++ 1 file changed, 52 insertions(+) create mode 100644 Documentation/devicetree/bindings/usb/ti,j721e-usb.txt diff --git a/Documentation/devicetree/bindings/usb/ti,j721e-usb.txt b/Documentation/devicetree/bindings/usb/ti,j721e-usb.txt new file mode 100644 index 000000000000..bac57c26b09b --- /dev/null +++ b/Documentation/devicetree/bindings/usb/ti,j721e-usb.txt @@ -0,0 +1,52 @@ +Binding for the TI specific wrapper for the Cadence USBSS-DRD controller + +Required properties: + - compatible: Should contain "ti,j721e-usb" + - reg: Physical base address and size of the wrappers register area. + - power-domains: Should contain a phandle to a PM domain provider node + and an args specifier containing the USB device id + value. This property is as per the binding documentation: + Documentation/devicetree/bindings/soc/ti/sci-pm-domain.txt + - clocks: Clock phandles to usb2_refclk and lpm_clk + - clock-names: Should contain "ref" and "lpm" + +Optional properties: + - ti,usb2-only: If present, it restricts the controller to USB2.0 mode of + operation. Must be present if USB3 PHY is not available + for USB. + - ti,vbus-divider: Should be present if USB VBUS line is connected to the + VBUS pin of the SoC via a 1/3 voltage divider. + +Sub-nodes: +The USB2 PHY and the Cadence USB3 controller should be the sub-nodes. + +Example: + + ti_usb0: cdns_usb@4104000 { + compatible = "ti,j721e-usb"; + reg = <0x00 0x4104000 0x00 0x100>; + power-domains = <&k3_pds 288 TI_SCI_PD_EXCLUSIVE>; + clocks = <&k3_clks 288 15>, <&k3_clks 288 3>; + clock-names = "ref", "lpm"; + assigned-clocks = <&k3_clks 288 15>; /* USB2_REFCLK */ + assigned-clock-parents = <&k3_clks 288 16>; /* HFOSC0 */ + #address-cells = <2>; + #size-cells = <2>; + ranges; + + usb0: usb@6000000 { + compatible = "cdns,usb3"; + reg = <0x00 0x6000000 0x00 0x10000>, + <0x00 0x6010000 0x00 0x10000>, + <0x00 0x6020000 0x00 0x10000>; + reg-names = "otg", "xhci", "dev"; + interrupts = <GIC_SPI 96 IRQ_TYPE_LEVEL_HIGH>, /* irq.0 */ + <GIC_SPI 102 IRQ_TYPE_LEVEL_HIGH>, /* irq.6 */ + <GIC_SPI 120 IRQ_TYPE_LEVEL_HIGH>; /* otgirq.0 */ + interrupt-names = "host", + "peripheral", + "otg"; + maximum-speed = "super-speed"; + dr_mode = "otg"; + }; + }; -- Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki. Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki
