SUN4I_INT_CTL_TF_E34
sun4i_spi_enable_interrupt(sspi, SUN4I_INT_CTL_TF_E34);
if (status & SUN4I_INT_CTL_TF_E34) {
sun4i_spi_disable_interrupt(sspi, SUN4I_INT_CTL_TF_E34);
sun4i_spi_write(sspi, SUN4I_INT_STA_REG, SUN4I_INT_CTL_TF_E34);