AX_SPI_CR2
ctrl_reg = ax_spi_read(xspi, AX_SPI_CR2);
ax_spi_write(xspi, AX_SPI_CR2, ctrl_reg);
ax_spi_write(xspi, AX_SPI_CR2, (AX_SPI_CR2_HTE | AX_SPI_CR2_SRD | AX_SPI_CR2_SWD));
reg_val = ax_spi_read(xspi, AX_SPI_CR2);
ax_spi_write(xspi, AX_SPI_CR2, reg_val);
reg_val = ax_spi_read(xspi, AX_SPI_CR2);
ax_spi_write(xspi, AX_SPI_CR2, reg_val);
reg_value = ax_spi_read(xspi, AX_SPI_CR2);
ax_spi_write(xspi, AX_SPI_CR2, reg_value);