RE: [PATCH v5 3/9] spi: Add a driver for the Freescale/NXP QuadSPI controller

[Yogesh Narayan Gaur <yogeshnarayan.gaur@xxxxxxx>]

Hi Frieder,

[..]
> >
> > Ok, I will have a look at what could make the chip selection fail in
> > case of AHB read.
> 
> Could you try with this change applied:
> 
> @@ -503,7 +503,7 @@ static void fsl_qspi_select_mem(struct fsl_qspi *q, struct
> spi_device *spi)
>                          map_addr = q->memmap_phy;
>                  else
>                          map_addr = q->memmap_phy +
> -                                  2 * q->devtype_data->ahb_buf_size;
> +                                  q->devtype_data->ahb_buf_size;
> 
>                  qspi_writel(q, map_addr, q->iobase + QUADSPI_SFA1AD +
> (i * 4));
>          }
> 

I have tried above change and also have done few more changes but still AHB read for CS1 is falling.

I guess we need to implement dynamic memory mapping [1] for AHB Read as was being done in previous driver implementation.
Would try this and update you.

[1] https://patchwork.ozlabs.org/patch/503655/

--
Regards
Yogesh Gaur
[..]