SUN6I_INT_CTL_REG
u32 reg = sun6i_spi_read(sspi, SUN6I_INT_CTL_REG);
sun6i_spi_write(sspi, SUN6I_INT_CTL_REG, reg);
sun6i_spi_write(sspi, SUN6I_INT_CTL_REG, reg);
sun6i_spi_write(sspi, SUN6I_INT_CTL_REG, 0);