SPI_IO_CONTROL
QCOM_SPI_WRITE_4(sc, SPI_IO_CONTROL,
reg = QCOM_SPI_READ_4(sc, SPI_IO_CONTROL);
QCOM_SPI_WRITE_4(sc, SPI_IO_CONTROL, reg);
reg = QCOM_SPI_READ_4(sc, SPI_IO_CONTROL);
QCOM_SPI_WRITE_4(sc, SPI_IO_CONTROL, reg);