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Recently, nvmem cell and MTD partition bindings were made to coexist:
Partitions can now be compatible = "nvmem-cells"; which registers a
NVMEM provider and interprets its child nodes as cells. Teach barebox
about this. This allows fetching NVMEM cells from MTD partitions and
hostfiles.
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Link: https://lore.barebox.org/20210619034516.6737-5-a.fatoum@pengutronix.de
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Registering a nvmem device for a regmap involves some boilerplate that
doesn't need to change from driver to driver:
- Reads are made aligned, to support normal use with md
- Writes are passed along as is
- nvmem parameters can be extracted from regmap
Instead of having to replicate this driver by driver, add one helper to
make this adaptation easier.
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Link: https://lore.barebox.org/20210531072406.5630-5-a.fatoum@pengutronix.de
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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barebox allocates a NVMEM device as part of nvmem_register, which it
passes along to the callbacks. Callbacks then use dev->parent->priv
to retrieve the driver private data. This indirection makes definition
of nvmem helpers inconvenient, because they would need to hijack the
->priv member of the hardware device. Avoid this by passing along
some private data pointer defined at registration time, just like Linux
does. This will be used in a follow up commit.
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Link: https://lore.barebox.org/20210531072406.5630-4-a.fatoum@pengutronix.de
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Add the nvmem framework from Linux.
Based on the v4.4-rc3 version.
Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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