Re: [PATCH v9 05/10] block: partitions: of: Attach partition fwnode to the block device

Bartosz Golaszewski <[email protected]> Fri, 31 Jul 2026 01:40:48 -0700

Newsgroups	org.infradead.lists.ath10k,org.kernel.vger.linux-arm-msm,org.kernel.vger.linux-block,org.kernel.vger.linux-bluetooth,org.kernel.vger.linux-devicetree,org.kernel.vger.linux-kernel,org.kernel.vger.linux-mmc,org.kernel.vger.linux-wireless,org.kernel.vger.netdev
Message-ID	<CAMRc=MdXFDFw_oHSGk5=RgLJAfTixuUNYTY62Dpcdb4nqcg7ig@mail.gmail.com>

On Thu, 30 Jul 2026 18:00:35 +0200, Loic Poulain
<[email protected]> said:
> The OF partition parser reads offset, size and label from each
> "fixed-partitions" child node but does not associate that node with the
> resulting partition block device. As a result a partition has no
> of_node, unlike the whole-disk device which gets its firmware node via
> add_disk_fwnode().
>
> Carry the partition's device tree node through the parser and attach it
> to the partition's block device with device_set_node(), mirroring the
> whole-disk case. This lets consumers describe per-partition properties
> in the device tree (for example an NVMEM layout on a partition node) and
> look them up through the partition device.
>
> No functional change for existing users, partitions without a matching
> device tree node simply get a NULL fwnode.
>
> Signed-off-by: Loic Poulain <[email protected]>
> ---

Makes sense.

Reviewed-by: Bartosz Golaszewski <[email protected]>