[Patch v2] spi: nxp-fspi: Add 1us delay to make controller ready for next transaction

[Jagan Teki]

On Tue, Apr 21, 2020 at 11:57 AM Kuldeep Singh <kuldeep.singh at nxp.com> wrote:
>
> Board gets reset when performing burst read/write operations. On the
> other hand, no such behaviour is observed on small size operations.
>
> In Linux, readl_poll_timeout API already add delay of 1us which is
> skipped in U-boot. Since, NXP Flexspi U-boot driver is a ported version
> of Linux driver and U-boot poll_timeout API lacks delay functionality,
> add 1us delay so as to make controller ready for other transactions.

Can you link me, where  does Linux add this delay?

Jagan.