NVIDIA Tegra210 xHCI Controller

NVIDIA Tegra210 xHCI

GPL-2.0-only 또는 BSD-2-Clause로 배포되는 이 schema는 NVIDIA Tegra210 xHCI controller를 정의합니다. Tegra XUSB pad controller가 제공하는 USB2와 USB3 interface를 모두 지원하며 관리자는 Thierry Reding과 Jon Hunter입니다.

세 register와 두 interrupt

`compatible`은 `nvidia,tegra210-xusb`입니다. register는 xHCI host용 `hcd`, XUSB FPCI용 `fpci`, XUSB IPFS용 `ipfs` 순서의 세 개입니다. interrupt는 xHCI host와 mailbox 순서의 두 개입니다.

properties:
  compatible:
    const: nvidia,tegra210-xusb

  reg:
    items:
      - description: base and length of the xHCI host registers
      - description: base and length of the XUSB FPCI registers
      - description: base and length of the XUSB IPFS registers

  reg-names:
    items:
      - const: hcd
      - const: fpci
      - const: ipfs

  interrupts:
    items:
      - description: xHCI host interrupt
      - description: mailbox interrupt

11개 clock, reset과 pad controller

clock은 XUSB host, host source, Falcon source, SuperSpeed, SuperSpeed divider, SuperSpeed source, High-Speed source, Full-Speed source, USB PLL, reference, I/O PLL 순서입니다.

이름은 `xusb_host`, `xusb_host_src`, `xusb_falcon_src`, `xusb_ss`, `xusb_ss_div2`, `xusb_ss_src`, `xusb_hs_src`, `xusb_fs_src`, `pll_u_480m`, `clk_m`, `pll_e`입니다.

reset은 host controller용 `xusb_host`, SuperSpeed logic용 `xusb_ss`, source clock 공유 reset `xusb_src`입니다. `nvidia,xusb-padctl`은 USB pad를 구성하는 XUSB pad controller phandle입니다.

clocks:
  items:
    - description: XUSB host clock
    - description: XUSB host source clock
    - description: XUSB Falcon source clock
    - description: XUSB SuperSpeed clock
    - description: XUSB SuperSpeed clock divider
    - description: XUSB SuperSpeed source clock
    - description: XUSB HighSpeed clock source
    - description: XUSB FullSpeed clock source
    - description: USB PLL
    - description: reference clock
    - description: I/O PLL

clock-names:
  items:
    - const: xusb_host
    - const: xusb_host_src
    - const: xusb_falcon_src
    - const: xusb_ss
    - const: xusb_ss_div2
    - const: xusb_ss_src
    - const: xusb_hs_src
    - const: xusb_fs_src
    - const: pll_u_480m
    - const: clk_m
    - const: pll_e

resets:
  items:
    - description: reset for the XUSB host controller
    - description: reset for the SuperSpeed logic
    - description: shared reset for xusb_{ss,hs,fs,falcon,host}_src.

reset-names:
  items:
    - const: xusb_host
    - const: xusb_ss
    - const: xusb_src

nvidia,xusb-padctl:
  $ref: /schemas/types.yaml#/definitions/phandle
  description: phandle to the XUSB pad controller that is used to configure
    the USB pads used by the XHCI controller

아홉 PHY와 두 power domain

PHY와 이름은 1~9개이며 USB2 port 0~3, HSIC 0, USB3 port 0~3을 허용합니다.

power domain은 Host·USB2용 XUSBC `xusb_host`와 SuperSpeed용 XUSBA `xusb_ss` 순서입니다.

phys:
  minItems: 1
  maxItems: 9

phy-names:
  minItems: 1
  maxItems: 9
  items:
    enum:
      - usb2-0
      - usb2-1
      - usb2-2
      - usb2-3
      - hsic-0
      - usb3-0
      - usb3-1
      - usb3-2
      - usb3-3

power-domains:
  items:
    - description: XUSBC power domain (for Host and USB 2.0)
    - description: XUSBA power domain (for SuperSpeed)

power-domain-names:
  items:
    - const: xusb_host
    - const: xusb_ss

Tegra210 supply와 공통 schema

PCIe/USB3 analog logic과 PLL, USB controller, UTMI PLL, PLLE reference에 1.05 V, 1.8 V, 3.3 V supply를 정의합니다.

공통 `usb-xhci.yaml`을 상속하고 평가되지 않은 추가 속성을 허용하지 않습니다. 이 파일에는 별도의 `required` 목록이 없습니다.

  dvddio-pex-supply:
    description: PCIe/USB3 analog logic power supply. Must supply 1.05 V.

  hvddio-pex-supply:
    description: High-voltage PCIe/USB3 power supply. Must supply 1.8 V.

  avdd-usb-supply:
    description: USB controller power supply. Must supply 3.3 V.

  avdd-pll-utmip-supply:
    description: UTMI PLL power supply. Must supply 1.8 V.

  avdd-pll-uerefe-supply:
    description: PLLE reference PLL power supply. Must supply 1.05 V.

  dvdd-usb-ss-pll-supply:
    description: PCIe/USB3 PLL power supply. Must supply 1.05 V.

  hvdd-usb-ss-pll-e-supply:
    description: High-voltage PLLE power supply. Must supply 1.8 V.

allOf:
  - $ref: usb-xhci.yaml

unevaluatedProperties: false

Tegra210 XUSB와 hard-wired Ethernet

예제 `usb@70090000`은 `hcd`, `fpci`, `ipfs` register, level-high GIC SPI 39·40, 11개 clock과 세 reset을 사용합니다.

XUSBC·XUSBA power domain, pad controller, USB2 port 0~3과 USB3 port 0~1 PHY를 연결하고 각 supply를 지정합니다.

controller 아래 `ethernet@1`은 product `usb955,9ff`인 hard-wired USB Ethernet device를 port 1에 둡니다.

examples:
  - |
    #include <dt-bindings/clock/tegra210-car.h>
    #include <dt-bindings/interrupt-controller/arm-gic.h>

    usb@70090000 {
        compatible = "nvidia,tegra210-xusb";
        reg = <0x70090000 0x8000>,
              <0x70098000 0x1000>,
              <0x70099000 0x1000>;
        reg-names = "hcd", "fpci", "ipfs";

        interrupts = <GIC_SPI 39 IRQ_TYPE_LEVEL_HIGH>,
                     <GIC_SPI 40 IRQ_TYPE_LEVEL_HIGH>;

        clocks = <&tegra_car TEGRA210_CLK_XUSB_HOST>,
                 <&tegra_car TEGRA210_CLK_XUSB_HOST_SRC>,
                 <&tegra_car TEGRA210_CLK_XUSB_FALCON_SRC>,
                 <&tegra_car TEGRA210_CLK_XUSB_SS>,
                 <&tegra_car TEGRA210_CLK_XUSB_SS_DIV2>,
                 <&tegra_car TEGRA210_CLK_XUSB_SS_SRC>,
                 <&tegra_car TEGRA210_CLK_XUSB_HS_SRC>,
                 <&tegra_car TEGRA210_CLK_XUSB_FS_SRC>,
                 <&tegra_car TEGRA210_CLK_PLL_U_480M>,
                 <&tegra_car TEGRA210_CLK_CLK_M>,
                 <&tegra_car TEGRA210_CLK_PLL_E>;
        clock-names = "xusb_host", "xusb_host_src",
                      "xusb_falcon_src", "xusb_ss",
                      "xusb_ss_div2", "xusb_ss_src",
                      "xusb_hs_src", "xusb_fs_src",
                      "pll_u_480m", "clk_m", "pll_e";
        resets = <&tegra_car 89>, <&tegra_car 156>,
                 <&tegra_car 143>;
        reset-names = "xusb_host", "xusb_ss", "xusb_src";
        power-domains = <&pd_xusbhost>, <&pd_xusbss>;
        power-domain-names = "xusb_host", "xusb_ss";

        nvidia,xusb-padctl = <&padctl>;

        phys = <&phy_usb2_0>, <&phy_usb2_1>, <&phy_usb2_2>, <&phy_usb2_3>,
               <&phy_pcie_6>, <&phy_pcie_5>;
        phy-names = "usb2-0", "usb2-1", "usb2-2", "usb2-3", "usb3-0",
                    "usb3-1";
        dvddio-pex-supply = <&vdd_pex_1v05>;
        hvddio-pex-supply = <&vdd_1v8>;
        avdd-usb-supply = <&vdd_3v3_sys>;
        avdd-pll-utmip-supply = <&vdd_1v8>;
        avdd-pll-uerefe-supply = <&vdd_pex_1v05>;
        dvdd-usb-ss-pll-supply = <&vdd_pex_1v05>;
        hvdd-usb-ss-pll-e-supply = <&vdd_1v8>;

        #address-cells = <1>;
        #size-cells = <0>;

        ethernet@1 {
            compatible = "usb955,9ff";
            reg = <1>;
        };
    };