Re: [PATCH 2/5] spi: spi-nxp-fspi: change the default lut index

[Adam Ford <aford173@xxxxxxxxx>]

On Wed, Dec 13, 2023 at 3:08 AM <haibo.chen@xxxxxxx> wrote:
>
> From: Haibo Chen <haibo.chen@xxxxxxx>
>
> The fspi dynamic lut use the last lut for all IPS operations, the
> imx8ulp only supports 15 luts, so change the last lut index from
> 31 to 15.
>
> Signed-off-by: Han Xu <han.xu@xxxxxxx>
> Signed-off-by: Haibo Chen <haibo.chen@xxxxxxx>
> ---
>  drivers/spi/spi-nxp-fspi.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/spi/spi-nxp-fspi.c b/drivers/spi/spi-nxp-fspi.c
> index 0feecf5ba010..9d6b4d22263c 100644
> --- a/drivers/spi/spi-nxp-fspi.c
> +++ b/drivers/spi/spi-nxp-fspi.c
> @@ -64,9 +64,9 @@
>  /*
>   * The driver only uses one single LUT entry, that is updated on
>   * each call of exec_op(). Index 0 is preset at boot with a basic
> - * read operation, so let's use the last entry (31).
> + * read operation, so let's use the last entry (15).
>   */
> -#define        SEQID_LUT                       31
> +#define        SEQID_LUT                       15

What impact does this have on other SoC's with the FlexSPI with 32?

adam
>
>  /* Registers used by the driver */
>  #define FSPI_MCR0                      0x00
> --
> 2.34.1
>
>