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[93.144.65.248]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-495686a8600sm118911045e9.6.2026.07.22.04.33.08 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 22 Jul 2026 04:33:09 -0700 (PDT) From: Stefano Radaelli X-Google-Original-From: Stefano Radaelli To: linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org Cc: pierluigi.p@variscite.com, Stefano Radaelli , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Frank Li , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam Subject: [PATCH v1 1/1] arm64: dts: imx8qm-var-som-symphony: enable expansion header UART Date: Wed, 22 Jul 2026 13:33:05 +0200 Message-ID: <20260722113305.28817-1-stefano.r@variscite.com> X-Mailer: git-send-email 2.47.3 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Stefano Radaelli Enable LPUART4 and configure its pin multiplexing to expose the UART interface on the Symphony expansion header. Signed-off-by: Stefano Radaelli --- .../boot/dts/freescale/imx8qm-var-som-symphony.dts | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/arch/arm64/boot/dts/freescale/imx8qm-var-som-symphony.dts b/arch/arm64/boot/dts/freescale/imx8qm-var-som-symphony.dts index c7d3073b4041..ec55b86c220d 100644 --- a/arch/arm64/boot/dts/freescale/imx8qm-var-som-symphony.dts +++ b/arch/arm64/boot/dts/freescale/imx8qm-var-som-symphony.dts @@ -287,6 +287,13 @@ &lpuart2 { status = "okay"; }; +/* header */ +&lpuart4 { + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_lpuart4>; + status = "okay"; +}; + &pca9534 { usb3-signal-route-hog { gpio-hog; @@ -428,6 +435,13 @@ IMX8QM_LVDS0_I2C1_SDA_DMA_UART2_RX 0x06000020 >; }; + pinctrl_lpuart4: lpuart4grp { + fsl,pins = < + IMX8QM_M40_GPIO0_01_DMA_UART4_TX 0x06000020 + IMX8QM_M40_GPIO0_00_DMA_UART4_RX 0x06000020 + >; + }; + pinctrl_pca9534: pca9534grp { fsl,pins = < IMX8QM_MIPI_CSI0_MCLK_OUT_LSIO_GPIO1_IO24 0x00000021 -- 2.47.3