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1 | * CSR SiRFprimaII Serial Peripheral Interface |
2 | ||
3 | Required properties: | |
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4 | - compatible : Should be "sirf,prima2-spi", "sirf,prima2-usp" |
5 | or "sirf,atlas7-usp" | |
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6 | - reg : Offset and length of the register set for the device |
7 | - interrupts : Should contain SPI interrupt | |
8 | - resets: phandle to the reset controller asserting this device in | |
9 | reset | |
10 | See ../reset/reset.txt for details. | |
11 | - dmas : Must contain an entry for each entry in clock-names. | |
12 | See ../dma/dma.txt for details. | |
13 | - dma-names : Must include the following entries: | |
14 | - rx | |
15 | - tx | |
16 | - clocks : Must contain an entry for each entry in clock-names. | |
17 | See ../clocks/clock-bindings.txt for details. | |
18 | ||
19 | - #address-cells: Number of cells required to define a chip select | |
20 | address on the SPI bus. Should be set to 1. | |
21 | - #size-cells: Should be zero. | |
22 | ||
23 | Optional properties: | |
24 | - spi-max-frequency: Specifies maximum SPI clock frequency, | |
25 | Units - Hz. Definition as per | |
26 | Documentation/devicetree/bindings/spi/spi-bus.txt | |
27 | - cs-gpios: should specify GPIOs used for chipselects. | |
28 | ||
29 | Example: | |
30 | ||
31 | spi0: spi@b00d0000 { | |
32 | compatible = "sirf,prima2-spi"; | |
33 | reg = <0xb00d0000 0x10000>; | |
34 | interrupts = <15>; | |
35 | dmas = <&dmac1 9>, | |
36 | <&dmac1 4>; | |
37 | dma-names = "rx", "tx"; | |
38 | #address-cells = <1>; | |
39 | #size-cells = <0>; | |
40 | clocks = <&clks 19>; | |
41 | resets = <&rstc 26>; | |
42 | }; |