kernel

linux-6.8.1/Documentation/devicetree/bindings/interrupt-controller/intel,ce4100-ioapic.yaml

@@ -0,0 +1,60 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/interrupt-controller/intel,ce4100-ioapic.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Intel I/O Advanced Programmable Interrupt Controller (IO APIC)
+
+maintainers:
+  - Rahul Tanwar <rtanwar@maxlinear.com>
+
+description: |
+  Intel's Advanced Programmable Interrupt Controller (APIC) is a
+  family of interrupt controllers. The APIC is a split
+  architecture design, with a local component (LAPIC) integrated
+  into the processor itself and an external I/O APIC. Local APIC
+  (lapic) receives interrupts from the processor's interrupt pins,
+  from internal sources and from an external I/O APIC (ioapic).
+  And it sends these to the processor core for handling.
+  See [1] Chapter 8 for more details.
+
+  Many of the Intel's generic devices like hpet, ioapic, lapic have
+  the ce4100 name in their compatible property names because they
+  first appeared in CE4100 SoC.
+
+  This schema defines bindings for I/O APIC interrupt controller.
+
+  [1] https://pdos.csail.mit.edu/6.828/2008/readings/ia32/IA32-3A.pdf
+
+properties:
+  compatible:
+    const: intel,ce4100-ioapic
+
+  reg:
+    maxItems: 1
+
+  interrupt-controller: true
+
+  '#interrupt-cells':
+    const: 2
+
+  interrupts:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+  - interrupt-controller
+  - '#interrupt-cells'
+
+additionalProperties: false
+
+examples:
+  - |
+    ioapic1: interrupt-controller@fec00000 {
+        compatible = "intel,ce4100-ioapic";
+        reg = <0xfec00000 0x1000>;
+        interrupt-controller;
+        #interrupt-cells = <2>;
+    };