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[83.173.201.248]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-487116c44bfsm147878035e9.9.2026.03.25.04.55.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 25 Mar 2026 04:55:32 -0700 (PDT) From: Franz Schnyder To: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Frank Li , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam Cc: Franz Schnyder , devicetree@vger.kernel.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Francesco Dolcini Subject: [PATCH 3/3] arm64: dts: freescale: imx95-toradex-smarc: Use gpio-hog for WIFI_UART_EN Date: Wed, 25 Mar 2026 12:55:11 +0100 Message-ID: <20260325115513.707914-1-fra.schnyder@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260325-mainline-update-imx95-v1-0-b5ebe976655b@toradex.com> References: <20260325-mainline-update-imx95-v1-0-b5ebe976655b@toradex.com> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Franz Schnyder On the Toradex SMARC iMX95, the WiFi UART signals are shared with the JTAG. The WIFI_UART_EN signal is used to select between these two functions. Configure the signal as gpio-hog and drive it high to select the UART function by default. Add a label to override the hog in derived device trees. Signed-off-by: Franz Schnyder --- arch/arm64/boot/dts/freescale/imx95-toradex-smarc.dtsi | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/arch/arm64/boot/dts/freescale/imx95-toradex-smarc.dtsi b/arch/arm64/boot/dts/freescale/imx95-toradex-smarc.dtsi index a90edefc5197..29e3f5bf867b 100644 --- a/arch/arm64/boot/dts/freescale/imx95-toradex-smarc.dtsi +++ b/arch/arm64/boot/dts/freescale/imx95-toradex-smarc.dtsi @@ -451,6 +451,13 @@ som_gpio_expander_1: gpio@21 { "", "", "SMARC_SDIO_WP"; + + wifi_uart_en: wifi-uart-en-hog { + gpio-hog; + gpios = <12 GPIO_ACTIVE_HIGH>; + line-name = "WIFI_UART_EN"; + output-high; + }; }; embedded-controller@28 { -- 2.43.0