I test with my custom board based on sabrelite and sabreauto.
my board mainly based on sabrelite but some part are based on sabreauto.
so I want to merge some code from sabreauto to sabrelite for i2c3 usage.
first I configure pad and gpio
#define SABREAUTO_I2C3_STEER IMX_GPIO_NR(5, 4) // from sabreauto
MX6Q_PAD_EIM_A24__GPIO_5_4, // to steer to weim and i2c3
1290 ret = gpio_request(SABREAUTO_I2C3_STEER, "i2c3-steer"); //SABREAUTO_I2C3_STEER
1291 printk("silee gpio request = %d \n",ret, "i2c3-steer");
gpio_request retun EINVAL
what is needed more?
gpio_request return 0 when I run sabreauto binary.