| Patrice Chotard | 40d1a31 | 2017-09-05 11:04:24 +0200 | [diff] [blame] | 1 | ST DWC3 glue logic |
| 2 | |
| 3 | This file documents the parameters for the dwc3-st driver. |
| 4 | This driver controls the glue logic used to configure the dwc3 core on |
| 5 | STiH407 based platforms. |
| 6 | |
| 7 | Required properties: |
| 8 | - compatible : must be "st,stih407-dwc3" |
| 9 | - reg : glue logic base address and USB syscfg ctrl register offset |
| 10 | - reg-names : should be "reg-glue" and "syscfg-reg" |
| 11 | - st,syscon : should be phandle to system configuration node which |
| 12 | encompasses the glue registers |
| 13 | - resets : list of phandle and reset specifier pairs. There should be two entries, one |
| 14 | for the powerdown and softreset lines of the usb3 IP |
| 15 | - reset-names : list of reset signal names. Names should be "powerdown" and "softreset" |
| 16 | |
| 17 | - #address-cells, #size-cells : should be '1' if the device has sub-nodes |
| 18 | with 'reg' property |
| 19 | |
| 20 | - pinctl-names : A pinctrl state named "default" must be defined |
| 21 | |
| 22 | - pinctrl-0 : Pin control group |
| 23 | |
| 24 | - ranges : allows valid 1:1 translation between child's address space and |
| 25 | parent's address space |
| 26 | |
| 27 | Sub-nodes: |
| 28 | The dwc3 core should be added as subnode to ST DWC3 glue as shown in the |
| 29 | example below. |
| 30 | |
| 31 | NB: The dr_mode property is NOT optional for this driver, as the default value |
| 32 | is "otg", which isn't supported by this SoC. Valid dr_mode values for dwc3-st are |
| 33 | either "host" or "device". |
| 34 | |
| 35 | Example: |
| 36 | |
| 37 | st_dwc3: dwc3@8f94000 { |
| 38 | status = "disabled"; |
| 39 | compatible = "st,stih407-dwc3"; |
| 40 | reg = <0x08f94000 0x1000>, <0x110 0x4>; |
| 41 | reg-names = "reg-glue", "syscfg-reg"; |
| 42 | st,syscfg = <&syscfg_core>; |
| 43 | resets = <&powerdown STIH407_USB3_POWERDOWN>, |
| 44 | <&softreset STIH407_MIPHY2_SOFTRESET>; |
| 45 | reset-names = "powerdown", "softreset"; |
| 46 | #address-cells = <1>; |
| 47 | #size-cells = <1>; |
| 48 | pinctrl-names = "default"; |
| 49 | pinctrl-0 = <&pinctrl_usb3>; |
| 50 | ranges; |
| 51 | |
| 52 | dwc3: dwc3@9900000 { |
| 53 | compatible = "snps,dwc3"; |
| 54 | reg = <0x09900000 0x100000>; |
| 55 | interrupts = <GIC_SPI 155 IRQ_TYPE_NONE>; |
| 56 | dr_mode = "host"; |
| 57 | phy-names = "usb2-phy", "usb3-phy"; |
| 58 | phys = <&usb2_picophy2>, <&phy_port2 PHY_TYPE_USB3>; |
| 59 | }; |
| 60 | }; |