[U-Boot] [PATCH 05/26] spi: mt7621-spi: remove data cache and rewrite its xfer function

[Stefan Roese]

On 28.08.19 08:37, Weijie Gao wrote:
> The mt7621 spi controller supports continuous generic half-duplex spi
> transaction. There is no need to cache xfer data at all.
> 
> To achieve this goal, the OPADDR register must be used as the first data
> to be sent. And follows the eight generic DIDO registers. But one thing
> different between OPADDR and DIDO registers is OPADDR has a reversed byte
> order.
> 
> With this patch, any amount of data can be read/written in a single xfer
> function call.
> 
> Signed-off-by: Weijie Gao <weijie.gao at mediatek.com>

Very nice, thanks for all your work here.

Reviewed-by: Stefan Roese <sr at denx.de>

Thanks,
Stefan