[PATCH] nvmem: add explicit config option to read OF fixed cells

Martin Blumenstingl martin.blumenstingl at googlemail.com
Tue Feb 21 13:38:13 PST 2023

Hello Rafał,

On Tue, Feb 21, 2023 at 3:50 PM Rafał Miłecki <zajec5 at gmail.com> wrote:
> From: Rafał Miłecki <rafal at milecki.pl>
> NVMEM subsystem looks for fixed NVMEM cells (specified in DT) by
> default. This behaviour made sense in early days before adding support
> for dynamic cells.
> With every new supported NVMEM device with dynamic cells current
> behaviour becomes non-optimal. It results in unneeded iterating over DT
> nodes and may result in false discovery of cells (depending on used DT
> properties).
I am not familiar with the recent changes around dynamic cells.
Is there any discussion/summary that I can read to get up to speed?

My main thought is: if there are many "fixed OF cells" implementations
and only a few "dynamic" ones - does it make sense to flip the logic
and introduce a new "use_dynamic_of_cells" flag instead?

Best regards,

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