NVIDIA Tegra124 xHCI Controller

NVIDIA Tegra124 xHCI

GPL-2.0-only 또는 BSD-2-Clause로 배포되는 이 schema는 NVIDIA Tegra124 xHCI controller를 정의합니다. 이 controller는 Tegra XUSB pad controller가 제공하는 USB2와 USB3 interface를 모두 지원합니다. 관리자는 Thierry Reding과 Jon Hunter입니다.

Tegra124·132 compatible, register와 interrupt

Tegra124는 `nvidia,tegra124-xusb`를 사용하고 Tegra132는 `nvidia,tegra132-xusb` 뒤에 Tegra124 fallback을 둡니다.

register는 xHCI host `hcd`, XUSB FPCI `fpci`, XUSB IPFS `ipfs` 순서의 세 개입니다. interrupt는 xHCI host와 mailbox 순서의 두 개입니다.

properties:
  # required
  compatible:
    oneOf:
      - description: NVIDIA Tegra124
        const: nvidia,tegra124-xusb

      - description: NVIDIA Tegra132
        items:
          - const: nvidia,tegra132-xusb
          - const: nvidia,tegra124-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, 세 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`, 여러 source clock이 공유하는 `xusb_src` 순서입니다. `nvidia,xusb-padctl`은 controller가 사용하는 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

일곱 PHY 이름과 여덟 supply

PHY와 이름은 1~7개이며 허용 이름은 `usb2-0`~`usb2-2`, `hsic-0`~`hsic-1`, `usb3-0`~`usb3-1`입니다.

PCIe/USB3 analog·digital logic, USB controller, UTMI PLL, PLLE reference PLL, PCIe/USB3 PLL, high-voltage PCIe/USB3, high-voltage PLLE용 supply를 정의합니다. 요구 전압은 1.05 V, 1.8 V 또는 3.3 V로 각 설명에 고정됩니다.

# optional
phys:
  minItems: 1
  maxItems: 7

phy-names:
  minItems: 1
  maxItems: 7
  items:
    enum:
      - usb2-0
      - usb2-1
      - usb2-2
      - hsic-0
      - hsic-1
      - usb3-0
      - usb3-1

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

dvddio-pex-supply:
  description: PCIe/USB3 digital logic power supply. Must supply 1.05 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-erefe-supply:
  description: PLLE reference PLL power supply. Must supply 1.05 V.

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

hvdd-usb-ss-supply:
  description: High-voltage PCIe/USB3 power supply. Must supply 3.3 V.

hvdd-usb-ss-pll-e-supply:
  description: High-voltage PLLE power supply. Must supply 3.3 V.

공통 xHCI 상속과 필수 속성

공통 `usb-xhci.yaml`을 상속하고 평가되지 않은 추가 속성을 허용하지 않습니다.

필수 속성에는 compatible, 세 register와 이름, 두 interrupt, 11개 clock과 이름, 세 reset과 이름, XUSB pad controller, PHY와 이름이 포함됩니다. supply 중 `avddio-pex`, `dvddio-pex`, `avdd-usb`, `hvdd-usb-ss`가 필수입니다.

allOf:
  - $ref: usb-xhci.yaml

unevaluatedProperties: false

required:
  - compatible
  - reg
  - reg-names
  - interrupts
  - clocks
  - clock-names
  - resets
  - reset-names
  - nvidia,xusb-padctl
  - phys
  - phy-names
  - avddio-pex-supply
  - dvddio-pex-supply
  - avdd-usb-supply
  - hvdd-usb-ss-supply

Tegra124 XUSB host 예제

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

USB2 PHY 1·2와 USB3 PHY 0을 연결하고, 1.05 V·1.8 V·3.3 V regulator를 각 analog·digital·PLL supply에 배치합니다.

examples:
  - |
    #include <dt-bindings/clock/tegra124-car.h>
    #include <dt-bindings/interrupt-controller/arm-gic.h>

    usb@70090000 {
        compatible = "nvidia,tegra124-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 TEGRA124_CLK_XUSB_HOST>,
                 <&tegra_car TEGRA124_CLK_XUSB_HOST_SRC>,
                 <&tegra_car TEGRA124_CLK_XUSB_FALCON_SRC>,
                 <&tegra_car TEGRA124_CLK_XUSB_SS>,
                 <&tegra_car TEGRA124_CLK_XUSB_SS_DIV2>,
                 <&tegra_car TEGRA124_CLK_XUSB_SS_SRC>,
                 <&tegra_car TEGRA124_CLK_XUSB_HS_SRC>,
                 <&tegra_car TEGRA124_CLK_XUSB_FS_SRC>,
                 <&tegra_car TEGRA124_CLK_PLL_U_480M>,
                 <&tegra_car TEGRA124_CLK_CLK_M>,
                 <&tegra_car TEGRA124_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";

        nvidia,xusb-padctl = <&padctl>;

        phys = <&phy_usb2_1>, <&phy_usb2_2>, <&phy_pcie_0>;
        phy-names = "usb2-1", "usb2-2", "usb3-0";

        avddio-pex-supply = <&vdd_1v05_run>;
        dvddio-pex-supply = <&vdd_1v05_run>;
        avdd-usb-supply = <&vdd_3v3_lp0>;
        avdd-pll-utmip-supply = <&vddio_1v8>;
        avdd-pll-erefe-supply = <&avdd_1v05_run>;
        avdd-usb-ss-pll-supply = <&vdd_1v05_run>;
        hvdd-usb-ss-supply = <&vdd_3v3_lp0>;
        hvdd-usb-ss-pll-e-supply = <&vdd_3v3_lp0>;
    };