[PATCH v3 2/2] mtd: rawnand: meson: waiting w/o wired ready/busy pin

Miquel Raynal miquel.raynal at bootlin.com
Fri Jun 9 08:24:57 PDT 2023


On Thu, 2023-06-08 at 04:47:28 UTC, Arseniy Krasnov wrote:
> If there is no wired ready/busy pin, classic way to wait for command
> completion is to use function 'nand_soft_waitrdy()'. Meson NAND has
> special command which allows to wait for NAND_STATUS_READY bit without
> reading status in a software loop (as 'nand_soft_waitrdy()' does). To
> use it send this command along with NAND_CMD_STATUS, then wait for an
> interrupt, and after interrupt send NAND_CMD_READ0. So this feature
> allows to use interrupt driven waiting without wired ready/busy pin.
> 
> Suggested-by: Liang Yang <liang.yang at amlogic.com>
> Signed-off-by: Arseniy Krasnov <AVKrasnov at sberdevices.ru>

Applied to https://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux.git nand/next, thanks.

Miquel



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