THC_M_PRT_SPI_ICRRD_OPCODE_I2C_MAX_SIZE
val = val & ~THC_M_PRT_SPI_ICRRD_OPCODE_I2C_MAX_SIZE;
val |= FIELD_PREP(THC_M_PRT_SPI_ICRRD_OPCODE_I2C_MAX_SIZE, max_rx_size);