68 lines
2.0 KiB
Plaintext
68 lines
2.0 KiB
Plaintext
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Trusty irq interface
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Trusty requires non-secure irqs to be forwarded to the secure OS.
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Required properties:
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- compatible: "android,trusty-irq-v1"
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Optional properties:
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- interrupt-templates: is an optional property that works together
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with "interrupt-ranges" to specify secure side to kernel IRQs mapping.
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It is a list of entries, each one of which defines a group of interrupts
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having common properties, and has the following format:
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< phandle irq_id_pos [templ_data]>
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phandle - phandle of interrupt controller this template is for
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irq_id_pos - the position of irq id in interrupt specifier array
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for interrupt controller referenced by phandle.
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templ_data - is an array of u32 values (could be empty) in the same
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format as interrupt specifier for interrupt controller
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referenced by phandle but with omitted irq id field.
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- interrupt-ranges: list of entries that specifies secure side to kernel
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IRQs mapping.
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Each entry in the "interrupt-ranges" list has the following format:
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<beg end templ_idx>
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beg - first entry in this range
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end - last entry in this range
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templ_idx - index of entry in "interrupt-templates" property
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that must be used as a template for all interrupts
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in this range
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Example:
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{
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gic: interrupt-controller@50041000 {
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compatible = "arm,gic-400";
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#interrupt-cells = <3>;
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interrupt-controller;
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...
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};
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...
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IPI: interrupt-controller {
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compatible = "android,CustomIPI";
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#interrupt-cells = <1>;
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interrupt-controller;
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};
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...
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trusty {
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compatible = "android,trusty-smc-v1";
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ranges;
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#address-cells = <2>;
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#size-cells = <2>;
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irq {
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compatible = "android,trusty-irq-v1";
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interrupt-templates = <&IPI 0>,
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<&gic 1 GIC_PPI 0>,
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<&gic 1 GIC_SPI 0>;
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interrupt-ranges = < 0 15 0>,
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<16 31 1>,
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<32 223 2>;
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};
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}
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}
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Must be a child of the node that provides the trusty std/fast call interface.
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