Re: [PATCH v7 4/5] spi: dw: Add DMA address widths capability check

Andy Shevchenko
2023-04-18T07:39:00Z

On Tue, Apr 18, 2023 at 05:29:01AM +0000, Joy Chakraborty wrote:
> Store address width capabilities of DMA controller during init and check
> the same per transfer to make sure the bits/word requirement can be met.
>
> Current DW DMA driver requires both tx and rx channel to be configured
> and functional hence a subset of both tx and rx channel address width
> capability is checked with the width requirement(n_bytes) for a
> transfer.

...

> + /*
> + * Assuming both channels belong to the same DMA controller hence the
> + * address width capabilities most likely would be the same.
> + */

I had a small comment on this In v6 thread.

--
With Best Regards,
Andy Shevchenko