RTEMSDeviceIMXSPIGPIO

A SPI bus driver that uses the i.MX/i.MXRT GPIO pins. More...

Files
file	imx-spi-gpio.h
	This header file provides the interfaces of RTEMSDeviceIMXSPIGPIO.
file	imx-spi-gpio.c
	This file provides the implementation of RTEMSDeviceIMXSPIGPIO.

Functions
rtems_status_code	imx_spi_gpio_init (void)
	Register all compatible nodes from the device tree.

Detailed Description

A SPI bus driver that uses the i.MX/i.MXRT GPIO pins.

Function Documentation

imx_spi_gpio_init()

rtems_status_code imx_spi_gpio_init

(

void

)

Register all compatible nodes from the device tree.

Search nodes in the device tree that are compatible to 'spi-gpio' and try to register the driver for them. Expects a node that looks (for example) like the following:

gpiospi: spi {
    status = "okay";
    compatible = "spi-gpio";
    #address-cells = <0x1>;
    #size-cells = <0x0>;
 
    sck-gpios = <&gpio2 27 0>;
    miso-gpios = <&gpio2 25 0>;
    mosi-gpios = <&gpio4 14 0>;
    cs-gpios = <&gpio4 10 1>;
    num-chipselects = <1>;
 
    rtems,path = "/dev/gpiospi";
};