From a6568d82091d279c8fbcdb1d30b46c23756b9145 Mon Sep 17 00:00:00 2001 From: Cosmin Tanislav Date: Mon, 1 Dec 2025 13:29:30 +0200 Subject: [PATCH] dt-bindings: interrupt-controller: Document RZ/{T2H,N2H} ICU The Renesas RZ/T2H (R9A09G077) and Renesas RZ/N2H (R9A09G087) SoCs have an Interrupt Controller (ICU) block that routes external interrupts to the GIC's SPIs, with the ability of level-translation, and can also produce software interrupts and aggregate error interrupts. It has 16 software triggered interrupts (INTCPUn), 16 external pin interrupts (IRQn), a System error interrupt (SEI), two Cortex-A55 error interrupts (CA55_ERRn), two Cortex-R52 error interrupts for each of the two cores (CR52x_ERRn), two Peripheral error interrupts (PERI_ERRn), two DSMIF error interrupts (DSMIF_ERRn), and two ENCIF error interrupts (ENCIF_ERRn). The IRQn and SEI interrupts are exposed externally, while the others are software triggered. INTCPU0 to INTCPU13, IRQ 0 to IRQ13 are non-safety interrupts, while INTCPU14, INTCPU15, IRQ14, IRQ15 and SEI are safety interrupts, and are exposed via a separate register space. Document them, and use RZ/T2H as a fallback for RZ/N2H as the ICU is entirely compatible. Signed-off-by: Cosmin Tanislav Signed-off-by: Thomas Gleixner Reviewed-by: Rob Herring (Arm) Link: https://patch.msgid.link/20251201112933.488801-2-cosmin-gabriel.tanislav.xa@renesas.com --- .../renesas,r9a09g077-icu.yaml | 236 ++++++++++++++++++ 1 file changed, 236 insertions(+) create mode 100644 Documentation/devicetree/bindings/interrupt-controller/renesas,r9a09g077-icu.yaml diff --git a/Documentation/devicetree/bindings/interrupt-controller/renesas,r9a09g077-icu.yaml b/Documentation/devicetree/bindings/interrupt-controller/renesas,r9a09g077-icu.yaml new file mode 100644 index 0000000000000..78c01d14e7657 --- /dev/null +++ b/Documentation/devicetree/bindings/interrupt-controller/renesas,r9a09g077-icu.yaml @@ -0,0 +1,236 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/interrupt-controller/renesas,r9a09g077-icu.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Renesas RZ/{T2H,N2H} Interrupt Controller + +maintainers: + - Cosmin Tanislav + +allOf: + - $ref: /schemas/interrupt-controller.yaml# + +description: + The Interrupt Controller (ICU) handles software-triggered interrupts + (INTCPU), external interrupts (IRQ and SEI), error interrupts and DMAC + requests. + +properties: + compatible: + oneOf: + - const: renesas,r9a09g077-icu # RZ/T2H + + - items: + - enum: + - renesas,r9a09g087-icu # RZ/N2H + - const: renesas,r9a09g077-icu + + reg: + items: + - description: Non-safety registers (INTCPU0-13, IRQ0-13) + - description: Safety registers (INTCPU14-15, IRQ14-15, SEI) + + '#interrupt-cells': + description: The first cell is the SPI number of the interrupt, as per user + manual. The second cell is used to specify the flag. + const: 2 + + '#address-cells': + const: 0 + + interrupt-controller: true + + interrupts: + items: + - description: Software interrupt 0 + - description: Software interrupt 1 + - description: Software interrupt 2 + - description: Software interrupt 3 + - description: Software interrupt 4 + - description: Software interrupt 5 + - description: Software interrupt 6 + - description: Software interrupt 7 + - description: Software interrupt 8 + - description: Software interrupt 9 + - description: Software interrupt 10 + - description: Software interrupt 11 + - description: Software interrupt 12 + - description: Software interrupt 13 + - description: Software interrupt 14 + - description: Software interrupt 15 + - description: External pin interrupt 0 + - description: External pin interrupt 1 + - description: External pin interrupt 2 + - description: External pin interrupt 3 + - description: External pin interrupt 4 + - description: External pin interrupt 5 + - description: External pin interrupt 6 + - description: External pin interrupt 7 + - description: External pin interrupt 8 + - description: External pin interrupt 9 + - description: External pin interrupt 10 + - description: External pin interrupt 11 + - description: External pin interrupt 12 + - description: External pin interrupt 13 + - description: External pin interrupt 14 + - description: External pin interrupt 15 + - description: System error interrupt + - description: Cortex-A55 error event 0 + - description: Cortex-A55 error event 1 + - description: Cortex-R52 CPU 0 error event 0 + - description: Cortex-R52 CPU 0 error event 1 + - description: Cortex-R52 CPU 1 error event 0 + - description: Cortex-R52 CPU 1 error event 1 + - description: Peripherals error event 0 + - description: Peripherals error event 1 + - description: DSMIF error event 0 + - description: DSMIF error event 1 + - description: ENCIF error event 0 + - description: ENCIF error event 1 + + interrupt-names: + items: + - const: intcpu0 + - const: intcpu1 + - const: intcpu2 + - const: intcpu3 + - const: intcpu4 + - const: intcpu5 + - const: intcpu6 + - const: intcpu7 + - const: intcpu8 + - const: intcpu9 + - const: intcpu10 + - const: intcpu11 + - const: intcpu12 + - const: intcpu13 + - const: intcpu14 + - const: intcpu15 + - const: irq0 + - const: irq1 + - const: irq2 + - const: irq3 + - const: irq4 + - const: irq5 + - const: irq6 + - const: irq7 + - const: irq8 + - const: irq9 + - const: irq10 + - const: irq11 + - const: irq12 + - const: irq13 + - const: irq14 + - const: irq15 + - const: sei + - const: ca55-err0 + - const: ca55-err1 + - const: cr520-err0 + - const: cr520-err1 + - const: cr521-err0 + - const: cr521-err1 + - const: peri-err0 + - const: peri-err1 + - const: dsmif-err0 + - const: dsmif-err1 + - const: encif-err0 + - const: encif-err1 + + clocks: + maxItems: 1 + + power-domains: + maxItems: 1 + +required: + - compatible + - reg + - '#interrupt-cells' + - '#address-cells' + - interrupt-controller + - interrupts + - interrupt-names + - clocks + - power-domains + +unevaluatedProperties: false + +examples: + - | + #include + #include + + icu: interrupt-controller@802a0000 { + compatible = "renesas,r9a09g077-icu"; + reg = <0x802a0000 0x10000>, + <0x812a0000 0x50>; + #interrupt-cells = <2>; + #address-cells = <0>; + interrupt-controller; + interrupts = , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + ; + interrupt-names = "intcpu0", "intcpu1", "intcpu2", + "intcpu3", "intcpu4", "intcpu5", + "intcpu6", "intcpu7", "intcpu8", + "intcpu9", "intcpu10", "intcpu11", + "intcpu12", "intcpu13", "intcpu14", + "intcpu15", + "irq0", "irq1", "irq2", "irq3", + "irq4", "irq5", "irq6", "irq7", + "irq8", "irq9", "irq10", "irq11", + "irq12", "irq13", "irq14", "irq15", + "sei", + "ca55-err0", "ca55-err1", + "cr520-err0", "cr520-err1", + "cr521-err0", "cr521-err1", + "peri-err0", "peri-err1", + "dsmif-err0", "dsmif-err1", + "encif-err0", "encif-err1"; + clocks = <&cpg CPG_CORE R9A09G077_CLK_PCLKM>; + power-domains = <&cpg>; + }; -- 2.47.3