39 lines
1.5 KiB
Text
39 lines
1.5 KiB
Text
|
* Freescale (Enhanced) Configurable Serial Peripheral Interface
|
||
|
|
(CSPI/eCSPI) for i.MX
|
||
|
|
|
||
|
|
Required properties:
|
||
|
|
- compatible :
|
||
|
|
- "fsl,imx1-cspi" for SPI compatible with the one integrated on i.MX1
|
||
|
|
- "fsl,imx21-cspi" for SPI compatible with the one integrated on i.MX21
|
||
|
|
- "fsl,imx27-cspi" for SPI compatible with the one integrated on i.MX27
|
||
|
|
- "fsl,imx31-cspi" for SPI compatible with the one integrated on i.MX31
|
||
|
|
- "fsl,imx35-cspi" for SPI compatible with the one integrated on i.MX35
|
||
|
|
- "fsl,imx51-ecspi" for SPI compatible with the one integrated on i.MX51
|
||
|
|
- reg : Offset and length of the register set for the device
|
||
|
|
- interrupts : Should contain CSPI/eCSPI interrupt
|
||
|
|
- cs-gpios : Specifies the gpio pins to be used for chipselects.
|
||
|
|
- clocks : Clock specifiers for both ipg and per clocks.
|
||
|
|
- clock-names : Clock names should include both "ipg" and "per"
|
||
|
|
See the clock consumer binding,
|
||
|
|
Documentation/devicetree/bindings/clock/clock-bindings.txt
|
||
|
|
- dmas: DMA specifiers for tx and rx dma. See the DMA client binding,
|
||
|
|
Documentation/devicetree/bindings/dma/dma.txt
|
||
|
|
- dma-names: DMA request names should include "tx" and "rx" if present.
|
||
|
|
|
||
|
|
Obsolete properties:
|
||
|
|
- fsl,spi-num-chipselects : Contains the number of the chipselect
|
||
|
|
|
||
|
|
Example:
|
||
|
|
|
||
|
|
ecspi@70010000 {
|
||
|
|
#address-cells = <1>;
|
||
|
|
#size-cells = <0>;
|
||
|
|
compatible = "fsl,imx51-ecspi";
|
||
|
|
reg = <0x70010000 0x4000>;
|
||
|
|
interrupts = <36>;
|
||
|
|
cs-gpios = <&gpio3 24 0>, /* GPIO3_24 */
|
||
|
|
<&gpio3 25 0>; /* GPIO3_25 */
|
||
|
|
dmas = <&sdma 3 7 1>, <&sdma 4 7 2>;
|
||
|
|
dma-names = "rx", "tx";
|
||
|
|
};
|