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[188.152.100.94]) by smtp.gmail.com with ESMTPSA id 2adb3069b0e04-59e5f568d95sm4644958e87.30.2026.02.18.09.18.18 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 18 Feb 2026 09:18:20 -0800 (PST) Date: Wed, 18 Feb 2026 18:18:16 +0100 From: Stefano Radaelli To: Frank Li Cc: Fabio Estevam , linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, Stefano Radaelli , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Sascha Hauer , Pengutronix Kernel Team Subject: Re: [PATCH v1 06/11] arm64: dts: freescale: imx8mm-var-som: Update WiFi/BT configuration Message-ID: References: <3e79c4d806b8b8024b71bc99c36b09a2fbb90a65.1771353301.git.stefano.r@variscite.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260218_091823_801550_D65049AC X-CRM114-Status: GOOD ( 20.75 ) 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 Hi Frank, On Wed, Feb 18, 2026 at 11:35:23AM -0500, Frank Li wrote: > On Tue, Feb 17, 2026 at 08:42:19PM +0100, Stefano Radaelli wrote: > > Hi Fabio! > > > > On Tue, Feb 17, 2026 at 03:59:33PM -0300, Fabio Estevam wrote: > > > > > > What about users who still have boards with the Broadcom Wi-Fi chip? > > > > > > Will Wifi on the old boards stop working? > > > > The Broadcom-based WiFi module was used on earlier revisions of the > > VAR-SOM-MX8MM. That hardware revision is no longer in production and > > is not available for new orders. All currently manufactured and shipped > > VAR-SOM-MX8MM modules integrate the NXP IW61x instead. > > This common problem, we met similar case. After replace new compenent, it > should be new boards, or new revision. > > I don't suggest directly replace it to broken old one. You can create dt > overlay files for new boards. > > Krzysztof Kozlowski: > how about other vendor handle similar case? Any guide line for > that? > > Frank > Thanks for the feedback! We understand the concern about potential regressions on older SOM revisions. However, since the wireless module is soldered on the SOM and not configurable, we are aligning the upstream device tree with the hardware revision that is currently in production. This change also aligns the i.MX8MM VAR-SOM with other VAR-SOM platforms already present in mainline (e.g. i.MX8MP, i.MX93), which use the IW61x wireless module as well. The intention is to keep the VAR-SOM family consistent in mainline with the hardware that is actively produced. If there is a strong requirement to preserve an explicit description of the older Broadcom-based revision in mainline, we can evaluate adding a separate description. Best regards, Stefano