how to driver ecspi in linux6.1.x for imx6ull ?

[bighero77]

Hi.

    I need use linux 6.1.x and ecspi on imx6ull.

up to now. I cannot make this works. for example, I find the probe function would not run into.

I have no idea.  would you please tell me where can I find the driver code on imx6ull with the 

linux kernel is 6.1.x.

is it possible to run linux6.1.x on imx6ull ?

how to driver ecspi in linux6.1.x for imx6ull ?

thanks.

[JosephAtNXP]

Hi,

Thank you for your interest in NXP Semiconductor products,

ECSPI can be used in Linux as spidev, have you tried it before?

FYI, IMX8MN-ECSPI-buses-not-available-in-Linux, spidev.rst 

Regards

[bighero77]

would you please give me an example code for ecspi drvier  on imx6ull (linux6.1.x)

[bighero77]

In the kernel spi driver code.  I find the device_id is found. that is, the compatible string matched.

but. the probe would not run into.

#include <linux/init.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/spi/spi.h>
#include <linux/platform_device.h>
#include <linux/io.h>
#include <linux/delay.h>
#include <linux/device.h>

struct imx6ull_ecspi {
struct spi_controller *controller;
void __iomem *base;
struct device *dev;
};

static struct class *imx6ull_ecspi_class; // 全局变量保存设备类指针

static int imx6ull_ecspi_setup(struct spi_device *spi)
{

}

static int imx6ull_ecspi_transfer_one_message(struct spi_controller *controller,
struct spi_message *message)
{

}

static int imx6ull_ecspi_probe(struct platform_device *pdev)
{
// cannot run into this.
}

static int imx6ull_ecspi_remove(struct platform_device *pdev)
{

}

static const struct of_device_id imx6ull_ecspi_of_match[] = {
{ .compatible = "fsl,imx6ull-ecspi", },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, imx6ull_ecspi_of_match);

static struct platform_driver imx6ull_ecspi_driver = {
.probe = imx6ull_ecspi_probe,
.remove = imx6ull_ecspi_remove,
.driver = {
.name = "imx6ull-ecspi",
.of_match_table = imx6ull_ecspi_of_match,
},
};

module_platform_driver(imx6ull_ecspi_driver);

MODULE_LICENSE("GPL");
MODULE_AUTHOR("Your Name");
MODULE_DESCRIPTION("i.MX6ULL eCSPI driver");