[PATCH v7 1/6] spi: rockchip_sfc: add support for Rockchip SFC

[Philipp Tomsich]

On Thu, 5 Aug 2021 at 10:26, Jon Lin <jon.lin at rock-chips.com> wrote:
>
> From: Chris Morgan <macromorgan at hotmail.com>
>
> This patch adds support for the Rockchip serial flash controller
> found on the PX30 SoC. It should work for versions 3-5 of the SFC
> IP, however I am only able to test it on v3.
>
> This is adapted from the WIP SPI-MEM driver for the SFC on mainline
> Linux. Note that the main difference between this and earlier versions
> of the driver is that this one does not support DMA. In testing
> the performance difference (performing a dual mode read on a 128Mb
> chip) is negligible. DMA, if used, must also be disabled in SPL
> mode when using A-TF anyway.
>
> Signed-off-by: Chris Morgan <macromorgan at hotmail.com>
> Signed-off-by: Jon Lin <jon.lin at rock-chips.com>

Reviewed-by: Philipp Tomsich <philipp.tomsich at vrull.eu>