The mapping of EXTI interrupts to its parent interrupt controller is both SoC and instance dependent. The current implementation requires adding a new table to the driver's code and a new compatible for each new EXTI instance. Add to the binding an interrupt nexus child node that will be used on the new EXTI instances and can be optionally used on the existing instances. The property 'interrupt-map' in the nexus node maps each EXTI interrupt to the parent interrupt. Align #address-cells and #interrupt-cells between the EXTI node and its nexus node. Signed-off-by: Antonio Borneo <antonio.borneo@xxxxxxxxxxx> Signed-off-by: Fabrice Gasnier <fabrice.gasnier@xxxxxxxxxxx> --- .../interrupt-controller/st,stm32-exti.yaml | 42 ++++++++++++++++++- 1 file changed, 41 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/interrupt-controller/st,stm32-exti.yaml b/Documentation/devicetree/bindings/interrupt-controller/st,stm32-exti.yaml index 00c10a8258f1..1a4cf9537b9e 100644 --- a/Documentation/devicetree/bindings/interrupt-controller/st,stm32-exti.yaml +++ b/Documentation/devicetree/bindings/interrupt-controller/st,stm32-exti.yaml @@ -26,6 +26,9 @@ properties: "#interrupt-cells": const: 2 + "#address-cells": + const: 0 + reg: maxItems: 1 @@ -42,6 +45,24 @@ properties: description: Interrupts references to primary interrupt controller + exti-interrupt-map: + type: object + properties: + interrupt-map: true + + interrupt-map-mask: true + + "#interrupt-cells": + const: 2 + + "#address-cells": + const: 0 + + required: + - interrupt-map + - "#interrupt-cells" + - "#address-cells" + required: - "#interrupt-cells" - compatible @@ -89,8 +110,27 @@ examples: reg = <0x5000d000 0x400>; }; + - | //Example 2 - exti2: interrupt-controller@40013c00 { + #include <dt-bindings/interrupt-controller/arm-gic.h> + exti2: interrupt-controller@5000d000 { + compatible = "st,stm32mp1-exti", "syscon"; + interrupt-controller; + #interrupt-cells = <2>; + reg = <0x5000d000 0x400>; + exti-interrupt-map { + #address-cells = <0>; + #interrupt-cells = <2>; + interrupt-map-mask = <0xffffffff 0>; + interrupt-map = + <0 0 &intc GIC_SPI 6 IRQ_TYPE_LEVEL_HIGH>, + <3 0 &intc GIC_SPI 9 IRQ_TYPE_LEVEL_HIGH>; + }; + }; + + - | + //Example 3 + exti3: interrupt-controller@40013c00 { compatible = "st,stm32-exti"; interrupt-controller; #interrupt-cells = <2>; -- 2.34.1