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2c91e61dc9
Add RTT bindings documentation. Signed-off-by: Boris BREZILLON <boris.brezillon@free-electrons.com> Acked-by: Johan Hovold <johan@kernel.org> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
24 lines
754 B
Plaintext
24 lines
754 B
Plaintext
Atmel AT91SAM9260 Real Time Timer
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Required properties:
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- compatible: should be: "atmel,at91sam9260-rtt"
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- reg: should encode the memory region of the RTT controller
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- interrupts: rtt alarm/event interrupt
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- clocks: should contain the 32 KHz slow clk that will drive the RTT block.
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- atmel,rtt-rtc-time-reg: should encode the GPBR register used to store
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the time base when the RTT is used as an RTC.
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The first cell should point to the GPBR node and the second one
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encode the offset within the GPBR block (or in other words, the
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GPBR register used to store the time base).
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Example:
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rtt@fffffd20 {
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compatible = "atmel,at91sam9260-rtt";
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reg = <0xfffffd20 0x10>;
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interrupts = <1 4 7>;
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clocks = <&clk32k>;
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atmel,rtt-rtc-time-reg = <&gpbr 0x0>;
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};
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