projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 850a5b67 JCPV |
1 | Atmel SPI device |
| 2 | ||
| 3 | Required properties: | |
| 4 | - compatible : should be "atmel,at91rm9200-spi". | |
| 5 | - reg: Address and length of the register set for the device | |
| 6 | - interrupts: Should contain spi interrupt | |
| 2c01a3d6 CP |
7 | - cs-gpios: chipselects (optional for SPI controller version >= 2 with the |
| 8 | Chip Select Active After Transfer feature). | |
| bdb90b6b BB |
9 | - clock-names: tuple listing input clock names. |
| 10 | Required elements: "spi_clk" | |
| 11 | - clocks: phandles to input clocks. | |
| 850a5b67 | 12 | |
| 2c01a3d6 CP |
13 | Optional properties: |
| 14 | - atmel,fifo-size: maximum number of data the RX and TX FIFOs can store for FIFO | |
| 15 | capable SPI controllers. | |
| 16 | ||
| 850a5b67 JCPV |
17 | Example: |
| 18 | ||
| 19 | spi1: spi@fffcc000 { | |
| 20 | compatible = "atmel,at91rm9200-spi"; | |
| 21 | reg = <0xfffcc000 0x4000>; | |
| 22 | interrupts = <13 4 5>; | |
| 23 | #address-cells = <1>; | |
| 24 | #size-cells = <0>; | |
| bdb90b6b BB |
25 | clocks = <&spi1_clk>; |
| 26 | clock-names = "spi_clk"; | |
| 850a5b67 | 27 | cs-gpios = <&pioB 3 0>; |
| 2c01a3d6 | 28 | atmel,fifo-size = <32>; |
| 850a5b67 JCPV |
29 | status = "okay"; |
| 30 | ||
| 31 | mmc-slot@0 { | |
| 32 | compatible = "mmc-spi-slot"; | |
| 33 | reg = <0>; | |
| 34 | gpios = <&pioC 4 0>; /* CD */ | |
| 35 | spi-max-frequency = <25000000>; | |
| 36 | }; | |
| 37 | }; |