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Subject[RFC PATCH v2 03/31] Documentation: Add binding for kalray,kv3-1-apic-gic
Date
From: Jules Maselbas <jmaselbas@kalray.eu>

Add documentation for `kalray,kv3-1-apic-gic` binding.

Co-developed-by: Jules Maselbas <jmaselbas@kalray.eu>
Signed-off-by: Jules Maselbas <jmaselbas@kalray.eu>
Signed-off-by: Yann Sionneau <ysionneau@kalray.eu>
---

Notes:
V1 -> V2: new patch

.../kalray,kv3-1-apic-gic.yaml | 66 +++++++++++++++++++
1 file changed, 66 insertions(+)
create mode 100644 Documentation/devicetree/bindings/interrupt-controller/kalray,kv3-1-apic-gic.yaml

diff --git a/Documentation/devicetree/bindings/interrupt-controller/kalray,kv3-1-apic-gic.yaml b/Documentation/devicetree/bindings/interrupt-controller/kalray,kv3-1-apic-gic.yaml
new file mode 100644
index 000000000000..7a37f19db2fb
--- /dev/null
+++ b/Documentation/devicetree/bindings/interrupt-controller/kalray,kv3-1-apic-gic.yaml
@@ -0,0 +1,66 @@
+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/interrupt-controller/kalray,kv3-1-apic-gic#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Kalray kv3-1 APIC-GIC
+
+description: |
+ Each cluster in the Coolidge SoC includes an Advanced Programmable Interrupt
+ Controller (APIC) which is split in two part:
+ - a Generic Interrupt Controller (referred as APIC-GIC)
+ - a Mailbox Controller (referred as APIC-Mailbox)
+ The APIC-GIC acts as an intermediary interrupt controller, muxing/routing
+ incoming interrupts to output interrupts connected to kvx cores interrupts lines.
+ The 139 possible input interrupt lines are organized as follow:
+ - 128 from the mailbox controller (one it per mailboxes)
+ - 1 from the NoC router
+ - 5 from IOMMUs
+ - 1 from L2 cache DMA job FIFO
+ - 1 from cluster watchdog
+ - 2 for SECC, DECC
+ - 1 from Data NoC
+ The 72 possible output interrupt lines:
+ - 68 : 4 interrupts per cores (17 cores)
+ - 1 for L2 cache controller
+ - 3 extra that are for padding
+
+allOf:
+ - $ref: /schemas/interrupt-controller.yaml#
+
+properties:
+ compatible:
+ const: kalray,kv3-1-apic-gic
+ "#interrupt-cells":
+ const: 1
+ description:
+ The IRQ number.
+ interrupt-controller: true
+ interrupt-parent: true
+ interrupts:
+ maxItems: 4
+ description: |
+ Specifies the interrupt line(s) in the interrupt-parent controller node;
+ valid values depend on the type of parent interrupt controller
+
+required:
+ - compatible
+ - reg
+ - "#interrupt-cells"
+ - interrupt-controller
+ - interrupt-parent
+ - interrupts
+
+examples:
+ - |
+ apic_gic: interrupt-controller@a20000 {
+ compatible = "kalray,kv3-1-apic-gic";
+ reg = <0 0xa20000 0 0x12000>;
+ #interrupt-cells = <1>;
+ interrupt-controller;
+ interrupt-parent = <&intc>;
+ interrups = <4 5 6 7>;
+ };
+
+...
--
2.37.2




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