doc: dt: add documentation for alphascale,asm9260-rtc
Document Alphascale asm9260 RTC bindings Signed-off-by: Oleksij Rempel <linux@rempel-privat.de> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
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* Alphascale asm9260 SoC Real Time Clock
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Required properties:
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- compatible: Should be "alphascale,asm9260-rtc"
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- reg: Physical base address of the controller and length
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of memory mapped region.
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- interrupts: IRQ line for the RTC.
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- clocks: Reference to the clock entry.
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- clock-names: should contain:
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* "ahb" for the SoC RTC clock
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Example:
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rtc0: rtc@800a0000 {
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compatible = "alphascale,asm9260-rtc";
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reg = <0x800a0000 0x100>;
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clocks = <&acc CLKID_AHB_RTC>;
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clock-names = "ahb";
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interrupts = <2>;
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};
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