On Thu, 5 Aug 2021 at 10:26, Jon Lin jon.lin@rock-chips.com wrote:
From: Chris Morgan macromorgan@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@hotmail.com Signed-off-by: Jon Lin jon.lin@rock-chips.com
Reviewed-by: Philipp Tomsich philipp.tomsich@vrull.eu