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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-08-07 13:11:40 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-08-07 13:11:40 +0000
commit8b0a8165cdad0f4133837d753649ef4682e42c3b (patch)
tree5c58f869f31ddb1f7bd6e8bdea269b680b36c5b6 /Documentation/devicetree/bindings/interrupt-controller/atmel,aic.txt
parentReleasing progress-linux version 6.8.12-1~progress7.99u1. (diff)
downloadlinux-8b0a8165cdad0f4133837d753649ef4682e42c3b.tar.xz
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Merging upstream version 6.9.7.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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-* Advanced Interrupt Controller (AIC)
-
-Required properties:
-- compatible: Should be:
- - "atmel,<chip>-aic" where <chip> can be "at91rm9200", "sama5d2",
- "sama5d3" or "sama5d4"
- - "microchip,<chip>-aic" where <chip> can be "sam9x60"
-
-- interrupt-controller: Identifies the node as an interrupt controller.
-- #interrupt-cells: The number of cells to define the interrupts. It should be 3.
- The first cell is the IRQ number (aka "Peripheral IDentifier" on datasheet).
- The second cell is used to specify flags:
- bits[3:0] trigger type and level flags:
- 1 = low-to-high edge triggered.
- 2 = high-to-low edge triggered.
- 4 = active high level-sensitive.
- 8 = active low level-sensitive.
- Valid combinations are 1, 2, 3, 4, 8.
- Default flag for internal sources should be set to 4 (active high).
- The third cell is used to specify the irq priority from 0 (lowest) to 7
- (highest).
-- reg: Should contain AIC registers location and length
-- atmel,external-irqs: u32 array of external irqs.
-
-Examples:
- /*
- * AIC
- */
- aic: interrupt-controller@fffff000 {
- compatible = "atmel,at91rm9200-aic";
- interrupt-controller;
- #interrupt-cells = <3>;
- reg = <0xfffff000 0x200>;
- };
-
- /*
- * An interrupt generating device that is wired to an AIC.
- */
- dma: dma-controller@ffffec00 {
- compatible = "atmel,at91sam9g45-dma";
- reg = <0xffffec00 0x200>;
- interrupts = <21 4 5>;
- };