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Wed, 14 May 2025 01:25:18 -0700 (PDT) Received: from dario-ThinkPad-T14s-Gen-2i.client.m3-hotspots.de ([46.189.28.43]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-442ebda7d2csm30987365e9.3.2025.05.14.01.25.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 14 May 2025 01:25:18 -0700 (PDT) From: Dario Binacchi To: linux-kernel@vger.kernel.org Cc: Simon Holesch , Karthikdatt Anantharamrao , michael@amarulasolutions.com, linux-amarula@amarulasolutions.com, Wolfgang Birkner , Dario Binacchi , Conor Dooley , Fabio Estevam , Krzysztof Kozlowski , Pengutronix Kernel Team , Rob Herring , Sascha Hauer , Shawn Guo , devicetree@vger.kernel.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org Subject: [PATCH 5/9] arm64: dts: imx8mn-bsh-smm-s2-common: Pull Up Console UART pins Date: Wed, 14 May 2025 10:24:59 +0200 Message-ID: <20250514082507.1983849-6-dario.binacchi@amarulasolutions.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250514082507.1983849-1-dario.binacchi@amarulasolutions.com> References: <20250514082507.1983849-1-dario.binacchi@amarulasolutions.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250514_012520_059842_8305DF50 X-CRM114-Status: GOOD ( 12.02 ) 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 From: Simon Holesch The UART pins are floating, if nothing is connected. This can trigger a Magic SysRq (e.g. reset). Signed-off-by: Simon Holesch Signed-off-by: Dario Binacchi --- arch/arm64/boot/dts/freescale/imx8mn-bsh-smm-s2-common.dtsi | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm64/boot/dts/freescale/imx8mn-bsh-smm-s2-common.dtsi b/arch/arm64/boot/dts/freescale/imx8mn-bsh-smm-s2-common.dtsi index de70cd3a392f..fd12b97525d1 100644 --- a/arch/arm64/boot/dts/freescale/imx8mn-bsh-smm-s2-common.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8mn-bsh-smm-s2-common.dtsi @@ -386,8 +386,8 @@ MX8MN_IOMUXC_ECSPI1_SS0_UART3_DCE_RTS_B 0x040 pinctrl_uart4: uart4grp { fsl,pins = < - MX8MN_IOMUXC_UART4_RXD_UART4_DCE_RX 0x040 - MX8MN_IOMUXC_UART4_TXD_UART4_DCE_TX 0x040 + MX8MN_IOMUXC_UART4_RXD_UART4_DCE_RX 0x140 + MX8MN_IOMUXC_UART4_TXD_UART4_DCE_TX 0x140 >; }; -- 2.43.0