Sysfs issue in imx8mm

[Udhay_]

Hello,

i am trying to toggle gpio on i2c expander and it is not affecting anything on my build

if i use /sys/class/ and there is no gpio even if i make gpio by default should gpio496 right?

Why it is not registered gpio496 on under /sys/class/gpio/?

Regards,
Udhayamoorthi Ramasamy

[JosephAtNXP]

Hi,

Thank you for your interest in NXP Semiconductor products,

What GPIO do you refer to? GPIO on J1004 I2C3_SCL_3V3?

You shouldn't see it because it's reserved for I2C3 which is interfaced with PMIC.

If you adjust device tree for GPIO, it'd be:

MX8MM_IOMUXC_I2C3_SCL_GPIO5_IO18

4 * 32 + 18 = 146

Regards