Re: [PATCH v8 3/3] ARM: dts: armada: WRT3200ACM: add marvell,invalid-reg-hint-in-rom

[George Valkov]

On Thu, 27 Aug 2026 at 20:40, Francesco Dolcini <francesco@xxxxxxxxxx> wrote:
>
>
>
> On 27 August 2026 19:19:37 CEST, Georgi Valkov <gvalkov@xxxxxxxxx> wrote:
> >WRT3200ACM and WRT32x routers always report a fixed US regulatory domain
> >from the mwifiex ROM, which conflicts with the platform regulatory
> >configuration on units sold outside the US market. For example:
> >- phy0 mwlwifi 5 GHz, hard-coded region 98 EU mapped to FR
> >- phy1 mwlwifi 2.4 GHz, hard-coded region 98 EU mapped to FR
> >- phy2 mwifiex 2.4 and 5 GHz, hard-coded region US
> >
> >When the system boots, it detects a conflict between the user selected
> >region and the radios, e.g. BG FR US, and applies extreme restrictions,
> >preventing phy0 from starting on any DFS channel. phy2 works.
> >
> >Add node wifi@1 with a flag marvell,invalid-reg-hint-in-rom to the
> >WRT3200ACM device-tree, which signals mwifiex that its regulatory
> >hint from ROM conflicts with the platform and should be ignored, so the
> >platform regulatory domain can be used. This does not allow the user to
> >change the regulatory config of any radio. It only allows phy0 to start
> >and operate according to its certified configuration. All radios in
> >WRT3200ACM/WRT32x are locked to the hard-coded configuration for which
> >they are certified.
> >
> >On WRT3200ACM, the platform configuration is stored on the devinfo mtd3
> >partition, which is read-only: cert_region=EU modelNumber=WRT3200ACM-EU
> >
> >The Linux kernel sources do not have support for WRT32x. An equivalent
> >patch for these routers has to be sent to OpenWrt.
> >
> >[1] https://github.com/kaloz/mwlwifi/issues/173#issuecomment-307879699
> >[2] https://github.com/openwrt/openwrt/issues/9956
> >
> >Cc: stable@xxxxxxxxxxxxxxx
>
> This whole series is not material for stable. Please drop thia tag from all the patches.

Dropped CC: stable from all patches, and sent v9:
https://lore.kernel.org/linux-wireless/20260827175850.89395-1-gvalkov@xxxxxxxxx/T/#t

Thank you!
Georgi Valkov