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Fri, 07 Aug 2026 11:27:29 -0700 (PDT) Received: from localhost.localdomain ([176.222.12.34]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-480021e7b3fsm8543886f8f.20.2026.08.07.11.27.27 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 07 Aug 2026 11:27:29 -0700 (PDT) From: Georgi Valkov To: briannorris@chromium.org, andrew@lunn.ch, chunfan.chen@gmail.com Cc: francesco@dolcini.it, johannes.berg@intel.com, kees@kernel.org, miriam.rachel.korenblit@intel.com, wenst@chromium.org, rafael.beims@toradex.com, avraham.stern@intel.com, peddolla.reddy@oss.qualcomm.com, error27@gmail.com, s.kerkmann@pengutronix.de, gregory.clement@bootlin.com, sebastian.hesselbarth@gmail.com, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, linux-arm-kernel@lists.infradead.org, linux-wireless@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, stable@vger.kernel.org, gvalkov@gmail.com Subject: [PATCH v3 2/2] ARM: dts: armada: WRT3200ACM: add marvell,ignore-regulatory-hint Date: Fri, 7 Aug 2026 21:21:24 +0300 Message-ID: <20260807182124.41572-2-gvalkov@gmail.com> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260807182124.41572-1-gvalkov@gmail.com> References: <20260807182124.41572-1-gvalkov@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260807_112731_334873_29D82643 X-CRM114-Status: GOOD ( 13.68 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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 use of 5 GHz and DFS channels. This also affects phy0. Add a device-tree flag marvell,ignore-regulatory-hint to the WRT3200ACM device-tree, which signals mwifiex to ignore an incorrect regulatory hint in the ROM, so userspace can set the correct platform regulatory domain. The radios in WRT3200ACM/WRT32x are locked to the hard-coded configuration for which they are certified, so the only impact is that the region conflict is avoided and the 5 GHz radios can be used. 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 Tested-on: WRT3200ACM, OpenWrt Cc: stable@vger.kernel.org Signed-off-by: Georgi Valkov --- arch/arm/boot/dts/marvell/armada-385-linksys-rango.dts | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/boot/dts/marvell/armada-385-linksys-rango.dts b/arch/arm/boot/dts/marvell/armada-385-linksys-rango.dts index 4ab45f294de2..6e283e223ca4 100644 --- a/arch/arm/boot/dts/marvell/armada-385-linksys-rango.dts +++ b/arch/arm/boot/dts/marvell/armada-385-linksys-rango.dts @@ -14,6 +14,7 @@ / { model = "Linksys WRT3200ACM"; compatible = "linksys,rango", "linksys,armada385", "marvell,armada385", "marvell,armada380"; + marvell,ignore-regulatory-hint; }; &expander0 { -- 2.55.0