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Diffstat (limited to 'Documentation/devicetree/bindings/usb/mediatek,mtu3.yaml')
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diff --git a/Documentation/devicetree/bindings/usb/mediatek,mtu3.yaml b/Documentation/devicetree/bindings/usb/mediatek,mtu3.yaml new file mode 100644 index 000000000000..f5c04b9d2de9 --- /dev/null +++ b/Documentation/devicetree/bindings/usb/mediatek,mtu3.yaml @@ -0,0 +1,287 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +# Copyright (c) 2020 MediaTek +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/usb/mediatek,mtu3.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: MediaTek USB3 DRD Controller Device Tree Bindings + +maintainers: + - Chunfeng Yun <chunfeng.yun@mediatek.com> + +allOf: + - $ref: "usb-drd.yaml" + +description: | + The DRD controller has a glue layer IPPC (IP Port Control), and its host is + based on xHCI. + +properties: + compatible: + items: + - enum: + - mediatek,mt2712-mtu3 + - mediatek,mt8173-mtu3 + - mediatek,mt8183-mtu3 + - const: mediatek,mtu3 + + reg: + items: + - description: the registers of device MAC + - description: the registers of IP Port Control + + reg-names: + items: + - const: mac + - const: ippc + + interrupts: + maxItems: 1 + + power-domains: + description: A phandle to USB power domain node to control USB's MTCMOS + maxItems: 1 + + clocks: + minItems: 1 + items: + - description: Controller clock used by normal mode + - description: Reference clock used by low power mode etc + - description: Mcu bus clock for register access + - description: DMA bus clock for data transfer + + clock-names: + minItems: 1 + items: + - const: sys_ck # required, others are optional + - const: ref_ck + - const: mcu_ck + - const: dma_ck + + phys: + description: + List of all the USB PHYs used, it's better to keep the sequence + as the hardware layout. + minItems: 1 + items: + - description: USB2/HS PHY # required, others are optional + - description: USB3/SS(P) PHY + - description: USB2/HS PHY # the following for backward compatible + - description: USB3/SS(P) PHY + - description: USB2/HS PHY + - description: USB3/SS(P) PHY + - description: USB2/HS PHY + - description: USB3/SS(P) PHY + - description: USB2/HS PHY + + vusb33-supply: + description: Regulator of USB AVDD3.3v + + vbus-supply: + deprecated: true + description: | + Regulator of USB VBUS5v, needed when supports dual-role mode. + Particularly, if use an output GPIO to control a VBUS regulator, should + model it as a regulator. See bindings/regulator/fixed-regulator.yaml + It's considered valid for compatibility reasons, not allowed for + new bindings, and put into a usb-connector node. + + dr_mode: + enum: [host, peripheral, otg] + default: otg + + maximum-speed: + enum: [super-speed-plus, super-speed, high-speed, full-speed] + + "#address-cells": + enum: [1, 2] + + "#size-cells": + enum: [1, 2] + + ranges: true + + extcon: + deprecated: true + description: | + Phandle to the extcon device detecting the IDDIG/VBUS state, neede + when supports dual-role mode. + It's considered valid for compatibility reasons, not allowed for + new bindings, and use "usb-role-switch" property instead. + + usb-role-switch: + $ref: /schemas/types.yaml#/definitions/flag + description: Support role switch. + type: boolean + + connector: + $ref: /connector/usb-connector.yaml# + description: + Connector for dual role switch, especially for "gpio-usb-b-connector" + type: object + + port: + description: + Any connector to the data bus of this controller should be modelled + using the OF graph bindings specified, if the "usb-role-switch" + property is used. See graph.txt + type: object + + enable-manual-drd: + $ref: /schemas/types.yaml#/definitions/flag + description: + supports manual dual-role switch via debugfs; usually used when + receptacle is TYPE-A and also wants to support dual-role mode. + type: boolean + + wakeup-source: + description: enable USB remote wakeup, see power/wakeup-source.txt + type: boolean + + mediatek,syscon-wakeup: + $ref: /schemas/types.yaml#/definitions/phandle-array + maxItems: 1 + description: + A phandle to syscon used to access the register of the USB wakeup glue + layer between xHCI and SPM, the field should always be 3 cells long. + items: + items: + - description: + The first cell represents a phandle to syscon + - description: + The second cell represents the register base address of the glue + layer in syscon + - description: + The third cell represents the hardware version of the glue layer, + 1 is used by mt8173 etc, 2 is used by mt2712 etc + enum: [1, 2] + + mediatek,u3p-dis-msk: + $ref: /schemas/types.yaml#/definitions/uint32 + description: The mask to disable u3ports, bit0 for u3port0, + bit1 for u3port1, ... etc + +# Required child node when support dual-role +patternProperties: + "^usb@[0-9a-f]+$": + type: object + $ref: /usb/mediatek,mtk-xhci.yaml# + description: + The xhci should be added as subnode to mtu3 as shown in the following + example if the host mode is enabled. + +dependencies: + connector: [ 'usb-role-switch' ] + port: [ 'usb-role-switch' ] + wakeup-source: [ 'mediatek,syscon-wakeup' ] + +required: + - compatible + - reg + - reg-names + - interrupts + - clocks + - clock-names + +additionalProperties: false + +examples: + # Dual role switch by extcon + - | + #include <dt-bindings/clock/mt8173-clk.h> + #include <dt-bindings/interrupt-controller/arm-gic.h> + #include <dt-bindings/interrupt-controller/irq.h> + #include <dt-bindings/phy/phy.h> + #include <dt-bindings/power/mt8173-power.h> + + usb@11271000 { + compatible = "mediatek,mt8173-mtu3", "mediatek,mtu3"; + reg = <0x11271000 0x3000>, <0x11280700 0x0100>; + reg-names = "mac", "ippc"; + interrupts = <GIC_SPI 64 IRQ_TYPE_LEVEL_LOW>; + phys = <&phy_port0 PHY_TYPE_USB3>, <&phy_port1 PHY_TYPE_USB2>; + power-domains = <&scpsys MT8173_POWER_DOMAIN_USB>; + clocks = <&topckgen CLK_TOP_USB30_SEL>; + clock-names = "sys_ck"; + vusb33-supply = <&mt6397_vusb_reg>; + vbus-supply = <&usb_p0_vbus>; + extcon = <&extcon_usb>; + dr_mode = "otg"; + wakeup-source; + mediatek,syscon-wakeup = <&pericfg 0x400 1>; + #address-cells = <1>; + #size-cells = <1>; + ranges; + + xhci: usb@11270000 { + compatible = "mediatek,mt8173-xhci", "mediatek,mtk-xhci"; + reg = <0x11270000 0x1000>; + reg-names = "mac"; + interrupts = <GIC_SPI 115 IRQ_TYPE_LEVEL_LOW>; + power-domains = <&scpsys MT8173_POWER_DOMAIN_USB>; + clocks = <&topckgen CLK_TOP_USB30_SEL>, <&clk26m>; + clock-names = "sys_ck", "ref_ck"; + vusb33-supply = <&mt6397_vusb_reg>; + }; + }; + + # Enable/disable device by an input gpio for VBUS pin + - | + #include <dt-bindings/gpio/gpio.h> + #include <dt-bindings/power/mt2712-power.h> + + usb@112c1000 { + compatible = "mediatek,mt2712-mtu3", "mediatek,mtu3"; + reg = <0x112c1000 0x3000>, <0x112d0700 0x0100>; + reg-names = "mac", "ippc"; + interrupts = <GIC_SPI 248 IRQ_TYPE_LEVEL_LOW>; + phys = <&u2port2 PHY_TYPE_USB2>; + power-domains = <&scpsys MT2712_POWER_DOMAIN_USB2>; + clocks = <&topckgen CLK_TOP_USB30_SEL>; + clock-names = "sys_ck"; + dr_mode = "peripheral"; + usb-role-switch; + + connector { + compatible = "gpio-usb-b-connector", "usb-b-connector"; + type = "micro"; + vbus-gpios = <&pio 13 GPIO_ACTIVE_HIGH>; + }; + }; + + # Dual role switch with type-c + - | + usb@11201000 { + compatible ="mediatek,mt8183-mtu3", "mediatek,mtu3"; + reg = <0x11201000 0x2e00>, <0x11203e00 0x0100>; + reg-names = "mac", "ippc"; + interrupts = <GIC_SPI 72 IRQ_TYPE_LEVEL_LOW>; + phys = <&u2port0 PHY_TYPE_USB2>; + clocks = <&clk26m>; + clock-names = "sys_ck"; + mediatek,syscon-wakeup = <&pericfg 0x400 1>; + wakeup-source; + dr_mode = "otg"; + usb-role-switch; + #address-cells = <1>; + #size-cells = <1>; + ranges; + + host: usb@11200000 { + compatible = "mediatek,mt8183-xhci", "mediatek,mtk-xhci"; + reg = <0x11200000 0x1000>; + reg-names = "mac"; + interrupts = <GIC_SPI 73 IRQ_TYPE_LEVEL_LOW>; + clocks = <&clk26m>; + clock-names = "sys_ck"; + }; + + port { + usb_role_sw: endpoint { + remote-endpoint = <&hs_ep>; + }; + }; + }; + +... |