diff options
| author | Michael Walle <michael@walle.cc> | 2021-04-24 14:06:04 +0300 |
|---|---|---|
| committer | Miquel Raynal <miquel.raynal@bootlin.com> | 2021-05-10 13:42:46 +0300 |
| commit | 1333a6779501f4cc662ff5c8b36b0a22f3a7ddc6 (patch) | |
| tree | b8dd1ed43d0965ba4eb4e754368fb0197d0833d1 /drivers | |
| parent | 81bb218c829246962a6327c64eec18ddcc049936 (diff) | |
| download | linux-1333a6779501f4cc662ff5c8b36b0a22f3a7ddc6.tar.xz | |
nvmem: core: allow specifying of_node
Until now, the of_node of the parent device is used. Some devices
provide more than just the nvmem provider. To avoid name space clashes,
add a way to allow specifying the nvmem cells in subnodes. Consider the
following example:
flash@0 {
compatible = "jedec,spi-nor";
partitions {
compatible = "fixed-partitions";
#address-cells = <1>;
#size-cells = <1>;
partition@0 {
reg = <0x000000 0x010000>;
};
};
otp {
compatible = "user-otp";
#address-cells = <1>;
#size-cells = <1>;
serial-number@0 {
reg = <0x0 0x8>;
};
};
};
There the nvmem provider might be the MTD partition or the OTP region of
the flash.
Add a new config->of_node parameter, which if set, will be used instead
of the parent's of_node.
Signed-off-by: Michael Walle <michael@walle.cc>
Acked-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20210424110608.15748-2-michael@walle.cc
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/nvmem/core.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/nvmem/core.c b/drivers/nvmem/core.c index bca671ff4e54..62d363a399d3 100644 --- a/drivers/nvmem/core.c +++ b/drivers/nvmem/core.c @@ -789,7 +789,9 @@ struct nvmem_device *nvmem_register(const struct nvmem_config *config) nvmem->reg_write = config->reg_write; nvmem->keepout = config->keepout; nvmem->nkeepout = config->nkeepout; - if (!config->no_of_node) + if (config->of_node) + nvmem->dev.of_node = config->of_node; + else if (!config->no_of_node) nvmem->dev.of_node = config->dev->of_node; switch (config->id) { |