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

[Francesco Dolcini]

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.