[PATCH v2 02/13] dt-bindings: usb: Add NVIDIA Tegra234 XUSB host controller binding

[Wayne Chang <waynec@nvidia.com>]

Add device-tree binding documentation for the XUSB host controller present
on Tegra234 SoC. This controller supports the USB 3.1 specification.

Signed-off-by: Wayne Chang <waynec@nvidia.com>
---
V1 -> V2: new change for adding nvidia,tegra234-xusb.yaml
 .../bindings/usb/nvidia,tegra234-xusb.yaml    | 159 ++++++++++++++++++
 1 file changed, 159 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/usb/nvidia,tegra234-xusb.yaml

diff --git a/Documentation/devicetree/bindings/usb/nvidia,tegra234-xusb.yaml b/Documentation/devicetree/bindings/usb/nvidia,tegra234-xusb.yaml
new file mode 100644
index 000000000000..d78ee88ed208
--- /dev/null
+++ b/Documentation/devicetree/bindings/usb/nvidia,tegra234-xusb.yaml
@@ -0,0 +1,159 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/usb/nvidia,tegra234-xusb.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: NVIDIA Tegra234 xHCI controller
+
+maintainers:
+  - Thierry Reding <thierry.reding@gmail.com>
+  - Jon Hunter <jonathanh@nvidia.com>
+
+description: The Tegra xHCI controller supports both USB2 and USB3 interfaces
+  exposed by the Tegra XUSB pad controller.
+
+properties:
+  compatible:
+    const: nvidia,tegra234-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 bar2 registers
+
+  reg-names:
+    items:
+      - const: hcd
+      - const: fpci
+      - const: bar2
+
+  interrupts:
+    items:
+      - description: xHCI host interrupt
+      - description: mailbox interrupt
+
+  clocks:
+    items:
+      - description: XUSB host clock
+      - description: XUSB Falcon source clock
+      - description: XUSB SuperSpeed clock
+      - 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_falcon_src
+      - const: xusb_ss
+      - const: xusb_ss_src
+      - const: xusb_hs_src
+      - const: xusb_fs_src
+      - const: pll_u_480m
+      - const: clk_m
+      - const: pll_e
+
+  interconnects:
+    items:
+      - description: read client
+      - description: write client
+
+  interconnect-names:
+    items:
+      - const: dma-mem # read
+      - const: write
+
+  iommus:
+    maxItems: 1
+
+  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
+
+  phys:
+    minItems: 1
+    maxItems: 8
+
+  phy-names:
+    minItems: 1
+    maxItems: 8
+    items:
+      enum:
+        - usb2-0
+        - usb2-1
+        - usb2-2
+        - usb2-3
+        - usb3-0
+        - usb3-1
+        - usb3-2
+        - usb3-3
+
+  power-domains:
+    items:
+      - description: XUSBC power domain
+      - description: XUSBA power domain
+
+  power-domain-names:
+    items:
+      - const: xusb_host
+      - const: xusb_ss
+
+  dma-coherent:
+    type: boolean
+
+allOf:
+  - $ref: usb-xhci.yaml
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/tegra234-gpio.h>
+    #include <dt-bindings/clock/tegra234-clock.h>
+    #include <dt-bindings/memory/tegra234-mc.h>
+    #include <dt-bindings/power/tegra234-powergate.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    usb@3610000 {
+      compatible = "nvidia,tegra234-xusb";
+      reg = <0x03610000 0x40000>,
+            <0x03600000 0x10000>,
+            <0x03650000 0x10000>;
+      reg-names = "hcd", "fpci", "bar2";
+
+      interrupts = <GIC_SPI 163 IRQ_TYPE_LEVEL_HIGH>,
+             <GIC_SPI 164 IRQ_TYPE_LEVEL_HIGH>;
+
+      clocks = <&bpmp TEGRA234_CLK_XUSB_CORE_HOST>,
+         <&bpmp TEGRA234_CLK_XUSB_FALCON>,
+         <&bpmp TEGRA234_CLK_XUSB_CORE_SS>,
+         <&bpmp TEGRA234_CLK_XUSB_SS>,
+         <&bpmp TEGRA234_CLK_CLK_M>,
+         <&bpmp TEGRA234_CLK_XUSB_FS>,
+         <&bpmp TEGRA234_CLK_UTMIP_PLL>,
+         <&bpmp TEGRA234_CLK_CLK_M>,
+         <&bpmp TEGRA234_CLK_PLLE>;
+      clock-names = "xusb_host", "xusb_falcon_src",
+              "xusb_ss", "xusb_ss_src", "xusb_hs_src",
+              "xusb_fs_src", "pll_u_480m", "clk_m",
+              "pll_e";
+      interconnects = <&mc TEGRA234_MEMORY_CLIENT_XUSB_HOSTR &emc>,
+          <&mc TEGRA234_MEMORY_CLIENT_XUSB_HOSTW &emc>;
+      interconnect-names = "dma-mem", "write";
+      iommus = <&smmu_niso1 TEGRA234_SID_XUSB_HOST>;
+
+      power-domains = <&bpmp TEGRA234_POWER_DOMAIN_XUSBC>,
+          <&bpmp TEGRA234_POWER_DOMAIN_XUSBA>;
+      power-domain-names = "xusb_host", "xusb_ss";
+
+      nvidia,xusb-padctl = <&xusb_padctl>;
+
+      phys =  <&pad_lanes_usb2_0>;
+      phy-names = "usb2-0";
+
+    };
-- 
2.25.1