Dear all,
I have loaded the compiled QorIQ-SDK-V1.2-20120614-yocto linux kernel module on p1021 (2C, 900M) based board and get into linux prompt. Then I try to let it support for i2c interface.
I have modified menuconfig like below:
<*> I2C/SMBus Test Stub
And modified device tree as below:
soc@ffe00000 {
ranges = <0x0 0x0 0xffe00000 0x100000>;
#address-cells = <0x1>;
#size-cells = <0x1>;
device_type = "soc";
compatible = "fsl,p1021-immr", "simple-bus";
bus-frequency = <0x0>;
i2c1: i2c@3000 {
status = "okay";
#address-cells = <0x1>;
#size-cells = <0x0>;
cell-index = <0x0>;
compatible = "fsl-i2c";
reg = <0x3000 0x100>;
interrupts = <0x2b 0x2 0x0 0x0>;
dfsrr;
};
i2c2: i2c@3100 {
status = "okay";
#address-cells = <0x1>;
#size-cells = <0x0>;
cell-index = <0x1>;
compatible = "fsl-i2c";
reg = <0x3100 0x100>;
interrupts = <0x2b 0x2 0x0 0x0>;
dfsrr;
};
...
};After load the kernel, I can't see any i2c device in /dev/ directory (dev/i2c-0 and dev/i2c-1). And can't see any file in /sys/class/i2c-dev/ directory.
root@p1021rdb:/# ls /dev/i2c*
ls: /dev/i2c*: No such file or directory
root@p1021rdb:
root@p1021rdb:~# ls /sys/class/i2c-dev/
root@p1021rdb:
And I try to modify menuconfig to set I2C device interface as modularizes (<M> I2C device interface). But when I use modprobe command, it show below error.
root@p1021rdb:/mnt# modprobe i2c-dev
modprobe: module i2c-dev not found in modules.dep
Can someone guide me how to resolve this issue? What could be going wrong here?
Thanks for your help,
Best Regards,
Henry
