| Rick Chen | 7d57da6 | 2017-11-15 16:03:34 +0800 | [diff] [blame] | 1 | Andestech ATCSPI200 SPI controller Device Tree Bindings |
| 2 | ------------------------------------------------------- |
| 3 | ATCSPI200 is a Serial Peripheral Interface (SPI) controller |
| 4 | which serves as a SPI master or a SPI slave. |
| 5 | |
| 6 | It is often be embedded in AE3XX and AE250 platforms. |
| 7 | |
| 8 | Required properties: |
| 9 | - compatible: has to be "andestech,atcspi200". |
| 10 | - reg: Base address and size of the controllers memory area. |
| 11 | - #address-cells: <1>, as required by generic SPI binding. |
| 12 | - #size-cells: <0>, also as required by generic SPI binding. |
| 13 | - interrupts: Property with a value describing the interrupt number. |
| 14 | - clocks: Clock phandles (see clock bindings for details). |
| 15 | - spi-max-frequency: Maximum SPI clocking speed of device in Hz. |
| 16 | |
| 17 | Optional properties: |
| 18 | - num-cs: Number of chip selects used. |
| 19 | |
| 20 | Example: |
| 21 | |
| 22 | spi: spi@f0b00000 { |
| 23 | compatible = "andestech,atcspi200"; |
| 24 | reg = <0xf0b00000 0x1000>; |
| 25 | #address-cells = <1>; |
| 26 | #size-cells = <0>; |
| 27 | num-cs = <1>; |
| 28 | clocks = <&spiclk>; |
| 29 | interrupts = <3 4>; |
| 30 | flash@0 { |
| 31 | compatible = "spi-flash"; |
| 32 | spi-max-frequency = <50000000>; |
| 33 | reg = <0>; |
| 34 | spi-cpol; |
| 35 | spi-cpha; |
| 36 | }; |
| 37 | }; |