dt-bindings: media: Add DT bindings for TI CSI2RX driver

TI's J721E uses the Cadence CSI2RX and DPHY peripherals to facilitate
capture over a CSI-2 bus. The TI CSI2RX platform driver glues all the
parts together.

Signed-off-by: Pratyush Yadav <p.yadav@ti.com>
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>

Documentation/devicetree/bindings/media/ti,csi2rx.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/media/ti,csi2rx.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: TI CSI2RX Wrapper Device Tree Bindings
+
+maintainers:
+  - Pratyush Yadav <p.yadav@ti.com>
+
+properties:
+  compatible:
+    items:
+      - const: ti,csi2rx
+
+  dmas:
+    description: RX DMA Channel 0
+
+  dma-names:
+    items:
+      - const: rx0
+
+  reg:
+    maxItems: 1
+    description: Base address and size of the TI wrapper registers.
+
+  power-domains:
+    maxItems: 1
+    description:
+      PM domain provider node and an args specifier containing
+      the device id value.
+
+  ranges: true
+
+  "#address-cells":
+    const: 2
+
+  "#size-cells":
+    const: 2
+
+patternProperties:
+  "csi-bridge@":
+    type: object
+    description: CSI2 bridge node.
+
+required:
+  - compatible
+  - reg
+  - dmas
+  - dma-names
+  - power-domains
+  - "#address-cells"
+  - "#size-cells"
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/soc/ti,sci_pm_domain.h>
+
+    ti_csi2rx0: ticsi2rx {
+        compatible = "ti,csi2rx";
+        dmas = <&main_udmap 0x4940>;
+        dma-names = "rx0";
+        reg = <0x0 0x4500000 0x0 0x1000>;
+        power-domains = <&k3_pds 26 TI_SCI_PD_EXCLUSIVE>;
+        #address-cells = <2>;
+        #size-cells = <2>;
+    };