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[83.173.201.248]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-487116ee57esm111397755e9.14.2026.03.25.02.50.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 25 Mar 2026 02:50:38 -0700 (PDT) From: Franz Schnyder Date: Wed, 25 Mar 2026 10:50:20 +0100 Subject: [PATCH 1/3] arm64: dts: freescale: imx95-toradex-smarc: Add SER2 interface Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260325-mainline-update-imx95-v1-1-b5ebe976655b@toradex.com> References: <20260325-mainline-update-imx95-v1-0-b5ebe976655b@toradex.com> In-Reply-To: <20260325-mainline-update-imx95-v1-0-b5ebe976655b@toradex.com> To: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Frank Li , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam Cc: devicetree@vger.kernel.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Francesco Dolcini , Franz Schnyder X-Mailer: b4 0.14.3 From: Franz Schnyder The Toradex SMARC iMX95 has four exposed serial interfaces, one of these is SER2, which supports RTS/CTS. Add UART support for SMARC SER2. Signed-off-by: Franz Schnyder --- .../arm64/boot/dts/freescale/imx95-toradex-smarc-dev.dts | 5 +++++ arch/arm64/boot/dts/freescale/imx95-toradex-smarc.dtsi | 16 ++++++++++++= ++++ 2 files changed, 21 insertions(+) diff --git a/arch/arm64/boot/dts/freescale/imx95-toradex-smarc-dev.dts b/ar= ch/arm64/boot/dts/freescale/imx95-toradex-smarc-dev.dts index 5b05f256fd52..7437e523ff63 100644 --- a/arch/arm64/boot/dts/freescale/imx95-toradex-smarc-dev.dts +++ b/arch/arm64/boot/dts/freescale/imx95-toradex-smarc-dev.dts @@ -210,6 +210,11 @@ &lpuart3 { status =3D "okay"; }; =20 +/* SMARC SER2 */ +&lpuart6 { + status =3D "okay"; +}; + /* SMARC MDIO, shared between all ethernet ports */ &netc_emdio { status =3D "okay"; diff --git a/arch/arm64/boot/dts/freescale/imx95-toradex-smarc.dtsi b/arch/= arm64/boot/dts/freescale/imx95-toradex-smarc.dtsi index 7a73958f6eec..1d369983cf7d 100644 --- a/arch/arm64/boot/dts/freescale/imx95-toradex-smarc.dtsi +++ b/arch/arm64/boot/dts/freescale/imx95-toradex-smarc.dtsi @@ -22,6 +22,7 @@ aliases { rtc1 =3D &scmi_bbm; serial0 =3D &lpuart2; serial1 =3D &lpuart1; + serial2 =3D &lpuart6; serial3 =3D &lpuart3; }; =20 @@ -615,6 +616,13 @@ &lpuart3 { pinctrl-0 =3D <&pinctrl_uart3>; }; =20 +/* SMARC SER2 */ +&lpuart6 { + pinctrl-names =3D "default"; + pinctrl-0 =3D <&pinctrl_uart6>; + uart-has-rtscts; +}; + &mu7 { status =3D "okay"; }; @@ -1105,6 +1113,14 @@ pinctrl_uart3: uart3grp { ; /* SMARC P141 - SER3_RX */ }; =20 + /* SMARC SER2 */ + pinctrl_uart6: uart6grp { + fsl,pins =3D , /* SMARC P139 -= SER2_CTS# */ + , /* SMARC P138 - SER2_RTS= # */ + , /* SMARC P137 - SER2_RX */ + ; /* SMARC P136 - SER2_TX */ + }; + /* On-module eMMC */ pinctrl_usdhc1: usdhc1grp { fsl,pins =3D , /* SD1_CLK */ --=20 2.43.0 From nobody Fri Apr 3 01:25:06 2026 Received: from mail-wm1-f44.google.com (mail-wm1-f44.google.com [209.85.128.44]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9F0463A1E6A for ; Wed, 25 Mar 2026 09:50:42 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; 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[83.173.201.248]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-487116ee57esm111397755e9.14.2026.03.25.02.50.38 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 25 Mar 2026 02:50:39 -0700 (PDT) From: Franz Schnyder Date: Wed, 25 Mar 2026 10:50:21 +0100 Subject: [PATCH 2/3] arm64: dts: freescale: imx95-toradex-smarc: Enable bluetooth on lpuart5 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260325-mainline-update-imx95-v1-2-b5ebe976655b@toradex.com> References: <20260325-mainline-update-imx95-v1-0-b5ebe976655b@toradex.com> In-Reply-To: <20260325-mainline-update-imx95-v1-0-b5ebe976655b@toradex.com> To: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Frank Li , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam Cc: devicetree@vger.kernel.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Francesco Dolcini , Franz Schnyder X-Mailer: b4 0.14.3 From: Franz Schnyder The Toradex SMARC iMX95 uses the MAYA-W260 WiFi/Bluetooth module, which uses the UART interface for Bluetooth. Add the missing UART support to enable bluetooth functionality on the MAYA-W260. Signed-off-by: Franz Schnyder --- Although Documentation/devicetree/bindings/dts-coding-style.rst recommends an empty line between status and latest property, leave it unchanged for consistency with the rest of the file. --- .../boot/dts/freescale/imx95-toradex-smarc.dtsi | 21 +++++++++++++++++= ++++ 1 file changed, 21 insertions(+) diff --git a/arch/arm64/boot/dts/freescale/imx95-toradex-smarc.dtsi b/arch/= arm64/boot/dts/freescale/imx95-toradex-smarc.dtsi index 1d369983cf7d..a90edefc5197 100644 --- a/arch/arm64/boot/dts/freescale/imx95-toradex-smarc.dtsi +++ b/arch/arm64/boot/dts/freescale/imx95-toradex-smarc.dtsi @@ -616,6 +616,19 @@ &lpuart3 { pinctrl-0 =3D <&pinctrl_uart3>; }; =20 +/* On-module Bluetooth */ +&lpuart5 { + pinctrl-names =3D "default"; + pinctrl-0 =3D <&pinctrl_bt_uart>; + uart-has-rtscts; + status =3D "okay"; + + bluetooth { + compatible =3D "nxp,88w8987-bt"; + fw-init-baudrate =3D <3000000>; + }; +}; + /* SMARC SER2 */ &lpuart6 { pinctrl-names =3D "default"; @@ -830,6 +843,14 @@ &wdog3 { }; 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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: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" 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 =3D <12 GPIO_ACTIVE_HIGH>; + line-name =3D "WIFI_UART_EN"; + output-high; + }; }; =20 embedded-controller@28 { --=20 2.43.0