NACK
[NACK] = {-ENXIO, "NACK: slv unresponsive, check its power/reset-ln"},
case NACK:
geni_i2c_err(gi2c, NACK);
#define DM_I2C_CB_ERR ((BIT(NACK) | BIT(BUS_PROTO) | BIT(ARB_LOST)) \