Atmel SPI device
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Required properties:
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- compatible : should be "atmel,at91rm9200-spi" or "microchip,sam9x60-spi".
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- reg: Address and length of the register set for the device
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- interrupts: Should contain spi interrupt
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- cs-gpios: chipselects (optional for SPI controller version >= 2 with the
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Chip Select Active After Transfer feature).
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- clock-names: tuple listing input clock names.
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Required elements: "spi_clk"
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- clocks: phandles to input clocks.
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Optional properties:
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- atmel,fifo-size: maximum number of data the RX and TX FIFOs can store for FIFO
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capable SPI controllers.
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Example:
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spi1: spi@fffcc000 {
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compatible = "atmel,at91rm9200-spi";
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reg = <0xfffcc000 0x4000>;
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interrupts = <13 4 5>;
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#address-cells = <1>;
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#size-cells = <0>;
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clocks = <&spi1_clk>;
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clock-names = "spi_clk";
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cs-gpios = <&pioB 3 0>;
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atmel,fifo-size = <32>;
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mmc-slot@0 {
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compatible = "mmc-spi-slot";
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reg = <0>;
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gpios = <&pioC 4 0>; /* CD */
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spi-max-frequency = <25000000>;
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};
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};
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