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authorLinus Torvalds <torvalds@linux-foundation.org>2012-03-27 19:47:35 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2012-03-27 19:47:35 -0400
commit66f03c614c0902ccf7d6160459362a9352f33271 (patch)
treeb9a8864efe5aa7fc5c96cc5ccbeca41f5cd6f6a7 /Documentation/devicetree/bindings/arm/atmel-aic.txt
parent34800598b2eebe061445216473b1e4c2ff5cba99 (diff)
parentcdc3df6f44f72c5924a16a47e1663c3fb0e57820 (diff)
Merge tag 'dt' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull "ARM: device tree work" from Arnd Bergmann: "Most of these patches convert code from using static platform data to describing the hardware in the device tree. This is only the first half of the changes for v3.4 because a lot of patches for this topic came in the last week before the merge window. Signed-off-by: Arnd Bergmann <arnd@arndb.de>" Fix up trivial conflicts in arch/arm/mach-vexpress/{Kconfig,core.h} * tag 'dt' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (86 commits) Document: devicetree: add OF documents for arch-mmp ARM: dts: append DTS file of pxa168 ARM: mmp: append OF support on pxa168 ARM: mmp: enable rtc clk in pxa168 i2c: pxa: add OF support serial: pxa: add OF support arm/dts: mt_ventoux: very basic support for TeeJet Mt.Ventoux board ARM: OMAP2+: Remove extra ifdefs for board-generic ARM: OMAP2+: Fix build error when only ARCH_OMAP2/3 or 4 is selected ASoC: DT: Add digital microphone binding to PAZ00 board. ARM: dt: Add ARM PMU to tegra*.dtsi ARM: at91: at91sam9x5cm/dt: add leds support ARM: at91: usb_a9g20/dt: add gpio-keys support ARM: at91: at91sam9m10g45ek/dt: add gpio-keys support ARM: at91: at91sam9m10g45ek/dt: add leds support ARM: at91: usb_a9g20/dt: add leds support ARM: at91/pio: add new PIO3 features ARM: at91: add sam9_smc.o to at91sam9x5 build ARM: at91/tc/clocksource: Add 32 bit variant to Timer Counter ARM: at91/tc: add device tree support to atmel_tclib ...
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1* Advanced Interrupt Controller (AIC)
2
3Required properties:
4- compatible: Should be "atmel,<chip>-aic"
5- interrupt-controller: Identifies the node as an interrupt controller.
6- interrupt-parent: For single AIC system, it is an empty property.
7- #interrupt-cells: The number of cells to define the interrupts. It sould be 2.
8 The first cell is the IRQ number (aka "Peripheral IDentifier" on datasheet).
9 The second cell is used to specify flags:
10 bits[3:0] trigger type and level flags:
11 1 = low-to-high edge triggered.
12 2 = high-to-low edge triggered.
13 4 = active high level-sensitive.
14 8 = active low level-sensitive.
15 Valid combinations are 1, 2, 3, 4, 8.
16 Default flag for internal sources should be set to 4 (active high).
17- reg: Should contain AIC registers location and length
18
19Examples:
20 /*
21 * AIC
22 */
23 aic: interrupt-controller@fffff000 {
24 compatible = "atmel,at91rm9200-aic";
25 interrupt-controller;
26 interrupt-parent;
27 #interrupt-cells = <2>;
28 reg = <0xfffff000 0x200>;
29 };
30
31 /*
32 * An interrupt generating device that is wired to an AIC.
33 */
34 dma: dma-controller@ffffec00 {
35 compatible = "atmel,at91sam9g45-dma";
36 reg = <0xffffec00 0x200>;
37 interrupts = <21 4>;
38 };