On Fri, Aug 20, 2021 at 05:29:49PM +0800, haibo.chen@xxxxxxx wrote:
> From: Haibo Chen <haibo.chen@xxxxxxx>
>
> Before commit 0e30f47232ab5 ("mtd: spi-nor: add support for DTR protocol"),
> for all PP command, it only support 1-1-1 mode, no matter the tx setting
> in dts. But after the upper commit, the logic change. It will choose
> the best mode(fastest mode) which flash device and spi-nor host controller
> both support.
>
> Though the spi-nor device on imx6sx-sdb/imx6ul(l/z)-14x14-evk board
> do not support PP-1-4-4/PP-1-1-4, but if tx is 4 in dts file, it will also
> impact the read mode selection. For the spi-nor device on the upper mentioned
> boards, they support read 1-4-4 mode and read 1-1-4 mode according to the
> device internal sfdp register. But qspi host controller do not support
> read 1-4-4 mode. so need to set the tx to 1, let the common code finally
> select read 1-1-4 mode, PP-1-1-1 mode.
>
> Signed-off-by: Haibo Chen <haibo.chen@xxxxxxx>
Applied both, thanks!
