[RFC PATCH v2 03/31] Documentation: Add binding for kalray,kv3-1-apic-gic

From: Jules Maselbas <jmaselbas(a)kalray.eu&gt; Add documentation for `kalray,kv3-1-apic-gic` binding. Co-developed-by: Jules Maselbas <jmaselbas(a)kalray.eu&gt; Signed-off-by: Jules Maselbas <jmaselbas(a)kalray.eu&gt; Signed-off-by: Yann Sionneau <ysionneau(a)kalray.eu&gt; --- 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