Dear Sir
Cuatomer is using MCIMX8M-EVK and BSP L4.9.88_2.0.0 to evaluate.
Customer want to add "spidev" to the device tree.
Original device tree
ecspi@30820000 {
compatible = "fsl,imx6ul-ecspi", "fsl,imx51-ecspi";
reg = <0x0 0x30820000 0x0 0x10000>;
interrupts = <0x0 0x1f 0x4>;
clocks = <0x4 0x18d 0x4 0x18d>;
clock-names = "ipg", "per";
interrupt-parent = <0x1>;
status = "disabled";
};
(Customer) Modified device tree
ecspi@30820000 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_spi1>;
status = "okay";
cs-gpios = <&gpio5 9 1>, <&gpio3 2 1>;
#address-cells = <1>;
#size-cells = <0>;
spidev: spidev@0 {
compatible = "spidev";
status = "okay";
spi-max-frequency = <5000000>;
reg = <0>;
};
};
The "spidev @ 0" was confirmed under "/sys/firmware/devicetree/base/ecspi@30820000/".
On the other hand, the "spidev" cannot be registered in "/dev/".
Customer set up the following in menuconfig and built the kernel.
Device Drivers --->
[*] SPI support --->
<*> User mode SPI device driver support
Q.
How can we register "spidev" under "/div/"?
Best Regards,
Eishi SHIBUSAWA
