The QUICC Engine provides interrupts for a few I/O ports. This is
handled via a separate interrupt ID and managed via a triplet of
dedicated registers hosted by the SoC.

Implement an interrupt driver for it for that those IRQs can then
be linked to the related GPIOs.

Signed-off-by: Christophe Leroy <redacted>
---
v2: Fixed problems reported by 'make dt_binding_check'
---
 .../soc/fsl/cpm_qe/fsl,qe-ports-ic.yaml       | 58 +++++++++++++++++++
 1 file changed, 58 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/soc/fsl/cpm_qe/fsl,qe-ports-ic.yaml

diff --git a/Documentation/devicetree/bindings/soc/fsl/cpm_qe/fsl,qe-ports-ic.yaml b/Documentation/devicetree/bindings/soc/fsl/cpm_qe/fsl,qe-ports-ic.yaml
new file mode 100644
index 000000000000..b7c74c66347c
--- /dev/null
+++ b/Documentation/devicetree/bindings/soc/fsl/cpm_qe/fsl,qe-ports-ic.yaml

@@ -0,0 +1,58 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/soc/fsl/cpm_qe/fsl,qe-ports-ic.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Freescale QUICC Engine I/O Ports Interrupt Controller
+
+maintainers:
+  - Christophe Leroy <christophe.leroy@csgroup.eu>
+
+description:
+  Interrupt controller for the QUICC Engine I/O ports found on some Freescale/NXP PowerQUICC and QorIQ SoCs.
+
+properties:
+  compatible:
+    enum:
+      - fsl,mpc8323-qe-ports-ic
+      - fsl,mpc8360-qe-ports-ic
+      - fsl,mpc8568-qe-ports-ic
+
+  reg:
+    maxItems: 1
+    description: Base address and size of the QE I/O Ports Interrupt Controller registers.
+
+  interrupt-controller: true
+
+  '#address-cells':
+    const: 0
+
+  '#interrupt-cells':
+    const: 1
+
+  interrupts:
+    maxItems: 1
+    description: Interrupt line to which the QE I/O Ports controller is connected.
+
+required:
+  - compatible
+  - reg
+  - interrupt-controller
+  - '#address-cells'
+  - '#interrupt-cells'
+  - interrupts
+
+additionalProperties: false
+
+examples:
+  - |
+    interrupt-controller@c00 {
+      interrupt-controller;
+      compatible = "fsl,mpc8323-qe-ports-ic";
+      #address-cells = <0>;
+      #interrupt-cells = <1>;
+      reg = <0xc00 0x18>;