Re: [PATCH v7 2/2] remoteproc: qcom: Use of_reserved_mem_region_* functions for "memory-region"

[Daniel Baluta]

> Other platforms (non-QCom) were tested also use
> devm_ioremap_resource_wc(). So something else is claiming the same
> region? Can you dump out /proc/iomem?
>
> The region is dynamically allocated, so maybe that has something to do with it.

We noticed a related issue with imx_dsp_rproc.

Because:
imx_dsp_rproc_prepare:
 -> imx_dsp_rproc_add_carveout
     -> /*... */ and this calls devm_ioremap_resource_wc
-> pm_runtime_get_sync

imx_dsp_rproc_unprepare:
 ->pm_runtime_put_sync

There is no easy way to manually undo devm_ioremap_resource_wc so I have
sent a patch to use devm_ioremap_wc.

https://lore.kernel.org/imx/20251209140425.766742-1-daniel.baluta@xxxxxxx/T/#u

In your case Marek at least you need to understand which driver
reserves    8dc00000-8e7fffff : reserved and why.

thanks,
Daniel.