81e9c1794f
This patch extends vic_of_init to parse valid interrupt sources and resume sources masks from device tree. If mask values are not specified in device tree, all sources are assumed to be valid, as before this patch. Signed-off-by: Tomasz Figa <tomasz.figa@gmail.com> Acked-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
42 lines
1.6 KiB
Plaintext
42 lines
1.6 KiB
Plaintext
* ARM Vectored Interrupt Controller
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One or more Vectored Interrupt Controllers (VIC's) can be connected in an ARM
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system for interrupt routing. For multiple controllers they can either be
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nested or have the outputs wire-OR'd together.
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Required properties:
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- compatible : should be one of
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"arm,pl190-vic"
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"arm,pl192-vic"
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- interrupt-controller : Identifies the node as an interrupt controller
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- #interrupt-cells : The number of cells to define the interrupts. Must be 1 as
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the VIC has no configuration options for interrupt sources. The cell is a u32
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and defines the interrupt number.
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- reg : The register bank for the VIC.
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Optional properties:
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- interrupts : Interrupt source for parent controllers if the VIC is nested.
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- valid-mask : A one cell big bit mask of valid interrupt sources. Each bit
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represents single interrupt source, starting from source 0 at LSb and ending
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at source 31 at MSb. A bit that is set means that the source is wired and
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clear means otherwise. If unspecified, defaults to all valid.
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- valid-wakeup-mask : A one cell big bit mask of interrupt sources that can be
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configured as wake up source for the system. Order of bits is the same as for
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valid-mask property. A set bit means that this interrupt source can be
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configured as a wake up source for the system. If unspecied, defaults to all
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interrupt sources configurable as wake up sources.
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Example:
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vic0: interrupt-controller@60000 {
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compatible = "arm,pl192-vic";
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interrupt-controller;
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#interrupt-cells = <1>;
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reg = <0x60000 0x1000>;
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valid-mask = <0xffffff7f>;
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valid-wakeup-mask = <0x0000ff7f>;
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};
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