Re: [PATCH] ARM: mach-qcom: fix support for ipq806x

[Linus Walleij]

On Fri, Oct 21, 2022 at 8:10 PM Christian Marangi <ansuelsmth@xxxxxxxxx> wrote:

> Add a specific config flag for Qcom IPQ806x as this SoC can't use
> AUTO_ZRELADDR and require the PHYS_OFFSET set to 0x42000000.
>
> This is needed as some legacy board (or some wrongly configured
> bootloader) pass the wrong memory map and doesn't exclude the first
> ~20MB of RAM reserved for the hardware network accellerators.
>
> With this change we can correctly support each board and prevent any
> kind of misconfiguration done by the OEM.
>
> Signed-off-by: Christian Marangi <ansuelsmth@xxxxxxxxx>

I had exactly this problem with the APQ8060 as well, then my problem
went away. I was under the impression that this was solved.

Is it not possible to use Geert's linux,usable-memory-range in
the chosen node to make the kernel stay off the memory?
(See examples by grep usable-memory in the kernel.)

Yours,
Linus Walleij