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