[PATCH 2/8] dt-bindings: usb: Add Tegra264 XUSB host support

[Wayne Chang]

Extend the Tegra234 XUSB host binding to cover Tegra264:

- Add nvidia,tegra264-xusb compatible string
- Document optional USB wake interrupts for Tegra264
- Document Tegra264 PMC wake event to port mapping
- Allow up to five IOMMU specifiers for the additional XUSB host
  stream IDs

Signed-off-by: Wayne Chang <waynec@xxxxxxxxxx>
---
 .../bindings/usb/nvidia,tegra234-xusb.yaml    | 115 ++++++++++++------
 1 file changed, 80 insertions(+), 35 deletions(-)

diff --git a/Documentation/devicetree/bindings/usb/nvidia,tegra234-xusb.yaml b/Documentation/devicetree/bindings/usb/nvidia,tegra234-xusb.yaml
index ec0993497fbb..94b1dbe2b02f 100644
--- a/Documentation/devicetree/bindings/usb/nvidia,tegra234-xusb.yaml
+++ b/Documentation/devicetree/bindings/usb/nvidia,tegra234-xusb.yaml
@@ -17,7 +17,9 @@ description: |
 
 properties:
   compatible:
-    const: nvidia,tegra234-xusb
+    enum:
+      - nvidia,tegra234-xusb
+      - nvidia,tegra264-xusb
 
   reg:
     items:
@@ -31,37 +33,6 @@ properties:
       - const: fpci
       - const: bar2
 
-  interrupts:
-    minItems: 2
-    items:
-      - description: xHCI host interrupt
-      - description: mailbox interrupt
-      - description: USB wake event 0
-      - description: USB wake event 1
-      - description: USB wake event 2
-      - description: USB wake event 3
-      - description: USB wake event 4
-      - description: USB wake event 5
-      - description: USB wake event 6
-    description: |
-      The first two interrupts are required for the USB host controller. The
-      remaining USB wake event interrupts are optional. Each USB wake event is
-      independent; it is not necessary to use all of these events on a
-      platform. The USB host controller can function even if no wake-up events
-      are defined. The USB wake event interrupts are handled by the Tegra PMC;
-      hence, the interrupt controller for these is the PMC and the interrupt
-      IDs correspond to the PMC wake event IDs. A complete list of wake event
-      IDs is provided below, and this information is also present in the Tegra
-      TRM document.
-
-        PMC wake-up 76 for USB3 port 0 wakeup
-        PMC wake-up 77 for USB3 port 1 wakeup
-        PMC wake-up 78 for USB3 port 2 and port 3 wakeup
-        PMC wake-up 79 for USB2 port 0 wakeup
-        PMC wake-up 80 for USB2 port 1 wakeup
-        PMC wake-up 81 for USB2 port 2 wakeup
-        PMC wake-up 82 for USB2 port 3 wakeup
-
   clocks:
     items:
       - description: XUSB host clock
@@ -96,9 +67,6 @@ properties:
       - 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
@@ -137,6 +105,83 @@ properties:
 allOf:
   - $ref: usb-xhci.yaml
 
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - nvidia,tegra234-xusb
+    then:
+      properties:
+        interrupts:
+          minItems: 2
+          description: |
+            The first two interrupts are required for the USB host controller.
+            The remaining USB wake event interrupts are optional. Each USB wake
+            event is independent; it is not necessary to use all of these events
+            on a platform. The USB host controller can function even if no
+            wake-up events are defined. The USB wake event interrupts are
+            handled by the Tegra PMC; hence, the interrupt controller for these
+            is the PMC and the interrupt IDs correspond to the PMC wake event
+            IDs.
+
+            PMC wake-up 76 for USB3 port 0 wakeup
+            PMC wake-up 77 for USB3 port 1 wakeup
+            PMC wake-up 78 for USB3 port 2 and port 3 wakeup
+            PMC wake-up 79 for USB2 port 0 wakeup
+            PMC wake-up 80 for USB2 port 1 wakeup
+            PMC wake-up 81 for USB2 port 2 wakeup
+            PMC wake-up 82 for USB2 port 3 wakeup
+          items:
+            - description: xHCI host interrupt
+            - description: mailbox interrupt
+            - description: USB wake event 0
+            - description: USB wake event 1
+            - description: USB wake event 2
+            - description: USB wake event 3
+            - description: USB wake event 4
+            - description: USB wake event 5
+            - description: USB wake event 6
+        iommus:
+          maxItems: 1
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - nvidia,tegra264-xusb
+    then:
+      properties:
+        interrupts:
+          minItems: 2
+          description: |
+            Same as Tegra234, with one additional optional USB wake event
+            interrupt. USB3 port 2 and port 3 each have a dedicated wake event
+            interrupt on Tegra264.
+
+            PMC wake-up 79 for USB3 port 0 wakeup
+            PMC wake-up 80 for USB3 port 1 wakeup
+            PMC wake-up 81 for USB3 port 2 wakeup
+            PMC wake-up 82 for USB3 port 3 wakeup
+            PMC wake-up 83 for USB2 port 0 wakeup
+            PMC wake-up 84 for USB2 port 1 wakeup
+            PMC wake-up 85 for USB2 port 2 wakeup
+            PMC wake-up 86 for USB2 port 3 wakeup
+          items:
+            - description: xHCI host interrupt
+            - description: mailbox interrupt
+            - description: USB wake event 0
+            - description: USB wake event 1
+            - description: USB wake event 2
+            - description: USB wake event 3
+            - description: USB wake event 4
+            - description: USB wake event 5
+            - description: USB wake event 6
+            - description: USB wake event 7
+        iommus:
+          maxItems: 5
+
 unevaluatedProperties: false
 
 examples:
-- 
2.25.1