6f18ce8026
Add snapshot of device tree bindings from keystone common kernel, branch
"android-mainline-keystone-qcom-release" at c4c12103f9c0 ("Snap for 9228065
from e32903b9a63bb558df8b803b076619c53c16baad to
android-mainline-keystone-qcom-release").
Change-Id: I7682079615cbd9f29340a5c1f2a1d84ec441a1f1
Signed-off-by: Melody Olvera <quic_molvera@quicinc.com>
44 lines
1.4 KiB
Plaintext
44 lines
1.4 KiB
Plaintext
* 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>;
|
|
};
|