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synced 2025-09-07 16:58:04 -04:00
Fixed MTP to work with TWRP
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115
Documentation/devicetree/bindings/usb/exynos-usb.txt
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115
Documentation/devicetree/bindings/usb/exynos-usb.txt
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Samsung Exynos SoC USB controller
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The USB devices interface with USB controllers on Exynos SOCs.
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The device node has following properties.
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EHCI
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Required properties:
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- compatible: should be "samsung,exynos4210-ehci" for USB 2.0
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EHCI controller in host mode.
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- reg: physical base address of the controller and length of memory mapped
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region.
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- interrupts: interrupt number to the cpu.
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- clocks: from common clock binding: handle to usb clock.
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- clock-names: from common clock binding: Shall be "usbhost".
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- port: if in the SoC there are EHCI phys, they should be listed here.
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One phy per port. Each port should have following entries:
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- reg: port number on EHCI controller, e.g
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On Exynos5250, port 0 is USB2.0 otg phy
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port 1 is HSIC phy0
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port 2 is HSIC phy1
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- phys: from the *Generic PHY* bindings; specifying phy used by port.
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Optional properties:
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- samsung,vbus-gpio: if present, specifies the GPIO that
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needs to be pulled up for the bus to be powered.
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Example:
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usb@12110000 {
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compatible = "samsung,exynos4210-ehci";
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reg = <0x12110000 0x100>;
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interrupts = <0 71 0>;
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samsung,vbus-gpio = <&gpx2 6 1 3 3>;
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clocks = <&clock 285>;
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clock-names = "usbhost";
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#address-cells = <1>;
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#size-cells = <0>;
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port@0 {
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reg = <0>;
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phys = <&usb2phy 1>;
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status = "disabled";
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};
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};
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OHCI
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Required properties:
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- compatible: should be "samsung,exynos4210-ohci" for USB 2.0
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OHCI companion controller in host mode.
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- reg: physical base address of the controller and length of memory mapped
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region.
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- interrupts: interrupt number to the cpu.
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- clocks: from common clock binding: handle to usb clock.
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- clock-names: from common clock binding: Shall be "usbhost".
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- port: if in the SoC there are OHCI phys, they should be listed here.
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One phy per port. Each port should have following entries:
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- reg: port number on OHCI controller, e.g
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On Exynos5250, port 0 is USB2.0 otg phy
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port 1 is HSIC phy0
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port 2 is HSIC phy1
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- phys: from the *Generic PHY* bindings, specifying phy used by port.
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Example:
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usb@12120000 {
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compatible = "samsung,exynos4210-ohci";
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reg = <0x12120000 0x100>;
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interrupts = <0 71 0>;
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clocks = <&clock 285>;
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clock-names = "usbhost";
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#address-cells = <1>;
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#size-cells = <0>;
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port@0 {
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reg = <0>;
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phys = <&usb2phy 1>;
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status = "disabled";
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};
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};
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DWC3
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Required properties:
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- compatible: should be "samsung,exynos5250-dwusb3" for USB 3.0 DWC3
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controller.
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- #address-cells, #size-cells : should be '1' if the device has sub-nodes
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with 'reg' property.
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- ranges: allows valid 1:1 translation between child's address space and
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parent's address space
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- clocks: Clock IDs array as required by the controller.
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- clock-names: names of clocks correseponding to IDs in the clock property
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Sub-nodes:
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The dwc3 core should be added as subnode to Exynos dwc3 glue.
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- dwc3 :
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The binding details of dwc3 can be found in:
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Documentation/devicetree/bindings/usb/dwc3.txt
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Example:
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usb@12000000 {
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compatible = "samsung,exynos5250-dwusb3";
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clocks = <&clock 286>;
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clock-names = "usbdrd30";
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#address-cells = <1>;
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#size-cells = <1>;
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ranges;
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dwc3 {
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compatible = "synopsys,dwc3";
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reg = <0x12000000 0x10000>;
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interrupts = <0 72 0>;
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usb-phy = <&usb2_phy &usb3_phy>;
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};
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};
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