forked from Minki/linux
7ec9f34a03
ARC Timers have historically been probed directly. As precursor to start probing Timers thru DT introduce these bindings Note that to keep series bisectable, these bindings are not yet used in code. Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: devicetree@vger.kernel.org Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
32 lines
845 B
Plaintext
32 lines
845 B
Plaintext
Synopsys ARC Local Timer with Interrupt Capabilities
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- Found on all ARC CPUs (ARC700/ARCHS)
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- Can be optionally programmed to interrupt on Limit
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- Two idential copies TIMER0 and TIMER1 exist in ARC cores and historically
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TIMER0 used as clockevent provider (true for all ARC cores)
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TIMER1 used for clocksource (mandatory for ARC700, optional for ARC HS)
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Required properties:
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- compatible : should be "snps,arc-timer"
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- interrupts : single Interrupt going into parent intc
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(16 for ARCHS cores, 3 for ARC700 cores)
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- clocks : phandle to the source clock
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Optional properties:
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- interrupt-parent : phandle to parent intc
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Example:
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timer0 {
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compatible = "snps,arc-timer";
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interrupts = <3>;
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interrupt-parent = <&core_intc>;
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clocks = <&core_clk>;
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};
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timer1 {
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compatible = "snps,arc-timer";
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clocks = <&core_clk>;
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};
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