[5/9] arm64: dts: imx8mn-bsh-smm-s2-common: Pull Up Console UART pins
diff mbox series

Message ID 20250514082507.1983849-6-dario.binacchi@amarulasolutions.com
State New
Headers show
Series
  • DTS updates for BSH SMM S2[PRO] boards
Related show

Commit Message

Dario Binacchi May 14, 2025, 8:24 a.m. UTC 
From: Simon Holesch <simon.holesch@bshg.com>

The UART pins are floating, if nothing is connected. This can trigger a
Magic SysRq (e.g. reset).

Signed-off-by: Simon Holesch <simon.holesch@bshg.com>
Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
---

 arch/arm64/boot/dts/freescale/imx8mn-bsh-smm-s2-common.dtsi | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Comments

Peng Fan May 16, 2025, 4:24 a.m. UTC | #1 
On Wed, May 14, 2025 at 10:24:59AM +0200, Dario Binacchi wrote:
>From: Simon Holesch <simon.holesch@bshg.com>
>
>The UART pins are floating, if nothing is connected. This can trigger a
>Magic SysRq (e.g. reset).
>
>Signed-off-by: Simon Holesch <simon.holesch@bshg.com>
>Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>

Reviewed-by: Peng Fan <peng.fan@nxp.com>

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Patch
diff mbox series 

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
 		>;
 	};