On Wed, 30 May 2018 15:14:32 +0200 Frieder Schrempf <frieder.schre...@exceet.de> wrote:
> + > +static void fsl_qspi_read_ahb(struct fsl_qspi *q, const struct spi_mem_op > *op) > +{ > + static int seq; > + > + /* > + * We want to avoid needing to invalidate the cache by issueing > + * a reset to the AHB and Serial Flash domain, as this needs > + * time. So we change the address on each read to trigger an > + * actual read operation on the flash. The actual address for > + * the flash memory is set by programming the LUT. > + */ > + memcpy_fromio(op->data.buf.in, > + q->ahb_addr + > + (seq * q->devtype_data->ahb_buf_size), > + op->data.nbytes); > + > + seq = seq ? 0 : 1; We should get rid of this hack. Yogesh, Han, do you know if there's an easy way to invalidate the AHB buffer without resetting the IP? > +}