dt-bindings: Add devicetree bindings

Add snapshot of device tree bindings from keystone common kernel, branch
"android-mainline-keystone-qcom-release" at c4c12103f9c0 ("Snap for 9228065
from e32903b9a63bb558df8b803b076619c53c16baad to
android-mainline-keystone-qcom-release").

Change-Id: I7682079615cbd9f29340a5c1f2a1d84ec441a1f1
Signed-off-by: Melody Olvera <quic_molvera@quicinc.com>

bindings/interrupt-controller/qcom,pdc.yaml

@@ -0,0 +1,87 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/interrupt-controller/qcom,pdc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: PDC interrupt controller
+
+maintainers:
+  - Bjorn Andersson <bjorn.andersson@linaro.org>
+
+description: |
+  Qualcomm Technologies Inc. SoCs based on the RPM Hardened architecture have a
+  Power Domain Controller (PDC) that is on always-on domain. In addition to
+  providing power control for the power domains, the hardware also has an
+  interrupt controller that can be used to help detect edge low interrupts as
+  well detect interrupts when the GIC is non-operational.
+
+  GIC is parent interrupt controller at the highest level. Platform interrupt
+  controller PDC is next in hierarchy, followed by others. Drivers requiring
+  wakeup capabilities of their device interrupts routed through the PDC, must
+  specify PDC as their interrupt controller and request the PDC port associated
+  with the GIC interrupt. See example below.
+
+properties:
+  compatible:
+    items:
+      - enum:
+          - qcom,sc7180-pdc
+          - qcom,sc7280-pdc
+          - qcom,sdm845-pdc
+          - qcom,sm6350-pdc
+          - qcom,sm8150-pdc
+          - qcom,sm8250-pdc
+          - qcom,sm8350-pdc
+      - const: qcom,pdc
+
+  reg:
+    minItems: 1
+    items:
+      - description: PDC base register region
+      - description: Edge or Level config register for SPI interrupts
+
+  '#interrupt-cells':
+    const: 2
+
+  interrupt-controller: true
+
+  qcom,pdc-ranges:
+    $ref: /schemas/types.yaml#/definitions/uint32-matrix
+    minItems: 1
+    maxItems: 32 # no hard limit
+    items:
+      items:
+        - description: starting PDC port
+        - description: GIC hwirq number for the PDC port
+        - description: number of interrupts in sequence
+    description: |
+      Specifies the PDC pin offset and the number of PDC ports.
+      The tuples indicates the valid mapping of valid PDC ports
+      and their hwirq mapping.
+
+required:
+  - compatible
+  - reg
+  - '#interrupt-cells'
+  - interrupt-controller
+  - qcom,pdc-ranges
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+
+    pdc: interrupt-controller@b220000 {
+        compatible = "qcom,sdm845-pdc", "qcom,pdc";
+        reg = <0xb220000 0x30000>;
+        qcom,pdc-ranges = <0 512 94>, <94 641 15>, <115 662 7>;
+        #interrupt-cells = <2>;
+        interrupt-parent = <&intc>;
+        interrupt-controller;
+    };
+
+    wake-device {
+        interrupts-extended = <&pdc 2 IRQ_TYPE_LEVEL_HIGH>;
+    };