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mtd: add support for parsing partitions defined in OF

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Add support for parsing partitions defined in device-trees via the
`partitions` node with `fixed-partitions` compatible.

The `mtdparts`/`mtdids` mechanism takes precedence. If some partitions
are defined for a MTD device via this mechanism, the code won't register
partitions for that MTD device from OF, even if they are defined.

Signed-off-by: Marek Behún <marek.behun@nic.cz>
Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>
Tested-by: Patrice Chotard <patrice.chotard@foss.st.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
Cc: Simon Glass <sjg@chromium.org>
Cc: Heiko Schocher <hs@denx.de>
Cc: Patrick Delaunay <patrick.delaunay@st.com>
This commit is contained in:
Marek Behún 2021-05-26 14:08:19 +02:00 • committed by Jagan Teki
parent 0e116bea52
commit dc339bf784
3 changed files with 135 additions and 44 deletions
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10
include/linux/mtd/mtd.h
View file

@ -581,6 +581,16 @@ static inline int del_mtd_partitions(struct mtd_info *mtd)
}
#endif
#if defined(CONFIG_MTD_PARTITIONS) && CONFIG_IS_ENABLED(DM) && \
CONFIG_IS_ENABLED(OF_CONTROL)
int add_mtd_partitions_of(struct mtd_info *master);
#else
static inline int add_mtd_partitions_of(struct mtd_info *master)
{
return 0;
}
#endif
struct mtd_info *__mtd_next_device(int i);
#define mtd_for_each_device(mtd) \
for ((mtd) = __mtd_next_device(0); \