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Diffstat (limited to 'doc')
| -rw-r--r-- | doc/device-tree-bindings/spi/spi-atcspi200.txt | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/doc/device-tree-bindings/spi/spi-atcspi200.txt b/doc/device-tree-bindings/spi/spi-atcspi200.txt new file mode 100644 index 0000000..9c0630b --- /dev/null +++ b/doc/device-tree-bindings/spi/spi-atcspi200.txt @@ -0,0 +1,37 @@ +Andestech ATCSPI200 SPI controller Device Tree Bindings +------------------------------------------------------- +ATCSPI200 is a Serial Peripheral Interface (SPI) controller +which serves as a SPI master or a SPI slave. + +It is often be embedded in AE3XX and AE250 platforms. + +Required properties: +- compatible: has to be "andestech,atcspi200". +- reg: Base address and size of the controllers memory area. +- #address-cells: <1>, as required by generic SPI binding. +- #size-cells: <0>, also as required by generic SPI binding. +- interrupts: Property with a value describing the interrupt number. +- clocks: Clock phandles (see clock bindings for details). +- spi-max-frequency: Maximum SPI clocking speed of device in Hz. + +Optional properties: +- num-cs: Number of chip selects used. + +Example: + + spi: spi@f0b00000 { + compatible = "andestech,atcspi200"; + reg = <0xf0b00000 0x1000>; + #address-cells = <1>; + #size-cells = <0>; + num-cs = <1>; + clocks = <&spiclk>; + interrupts = <3 4>; + flash@0 { + compatible = "spi-flash"; + spi-max-frequency = <50000000>; + reg = <0>; + spi-cpol; + spi-cpha; + }; + }; |