Re: [PATCH v6 1/3] dt-bindings: net: wireless: add flag marvell,invalid-reg-hint-in-rom

On Thu, 27 Aug 2026 at 13:34, Krzysztof Kozlowski [off-list ref] wrote:

On Fri, Aug 21, 2026 at 04:07:26AM +0300, Georgi Valkov wrote:

quoted

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 a device-tree flag, which allows affected devices, where the radio
conflicts with the platform to ignore the incorrect regulatory hint in
the ROM of the radio, so the platform regulatory domain can be used.
This does not allow the user to change the regulatory configuration of
any radio. It only allows phy0 to start and operate according to its
certified configuration.

[1] https://github.com/kaloz/mwlwifi/issues/173#issuecomment-307879699
[2] https://github.com/openwrt/openwrt/issues/9956

Cc: stable@vger.kernel.org

I don't think there is any bug to be fixed here. Support was incomplete,
so you add a missing quirk, but there was no bug in the binding.
Binding was correct.

With stable dropped:

Reviewed-by: Krzysztof Kozlowski <redacted>

I added Reviewed-by to the first patch and sent v7 with these changes:
1. drop Cc: stable, the first patch only documents a binding
2. restore colon after Tested-on as requested by openwrt-ai
3. mention the added wifi@1 node
https://lore.kernel.org/linux-wireless/20260827130335.6606-1-gvalkov@gmail.com/T/#t (local)

Thank you for your help and patience!
Georgi Valkov