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authorIngo Molnar <mingo@kernel.org>2014-08-22 08:04:15 (GMT)
committerIngo Molnar <mingo@kernel.org>2014-08-22 08:04:15 (GMT)
commit80b304fd00e8b667775ff791121b61ecd7cd0c03 (patch)
treeb4f2ec59fe062c43343ee4c2f10a6bcd0e4dcd1b /Documentation/devicetree/bindings/interrupt-controller/atmel,aic.txt
parentfb21b84e7f809ef04b1e5aed5d463cf0d4866638 (diff)
parent6a7519e81321343165f89abb8b616df186d3e57a (diff)
downloadlinux-80b304fd00e8b667775ff791121b61ecd7cd0c03.tar.xz
Merge tag 'efi-urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/mfleming/efi into x86/urgent
Pull EFI fixes from Matt Fleming: * WARN_ON(!spin_is_locked()) always triggers on non-SMP machines. Swap it for the more canonical lockdep_assert_held() which always does the right thing - Guenter Roeck * Assign the correct value to efi.runtime_version on arm64 so that all the runtime services can be invoked - Semen Protsenko Signed-off-by: Ingo Molnar <mingo@kernel.org>
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+* Advanced Interrupt Controller (AIC)
+
+Required properties:
+- compatible: Should be "atmel,<chip>-aic"
+ <chip> can be "at91rm9200" or "sama5d3"
+- interrupt-controller: Identifies the node as an interrupt controller.
+- interrupt-parent: For single AIC system, it is an empty property.
+- #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-parent;
+ #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>;
+ };