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Mon, 2 Mar 2026 09:46:09 +0100 (CET) From: Nora Schiffer To: Frank Li , Sascha Hauer Cc: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Pengutronix Kernel Team , Fabio Estevam , linux-arm-kernel@lists.infradead.org, imx@lists.linux.dev, linux@ew.tq-group.com, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Nora Schiffer Subject: [PATCH v2] arm64: dts: freescale: imx8mp-tqma8mpql-mba8mp-ras314: fix UART1 RTS/CTS muxing Date: Mon, 2 Mar 2026 09:45:48 +0100 Message-ID: <20260302084548.6471-1-nora.schiffer@ew.tq-group.com> X-Mailer: git-send-email 2.53.0 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 X-cloud-security-sender: nora.schiffer@ew.tq-group.com X-cloud-security-recipient: linux-kernel@vger.kernel.org X-cloud-security-crypt: load encryption module X-cloud-security-Mailarchiv: E-Mail archived for: nora.schiffer@ew.tq-group.com X-cloud-security-Mailarchivtype: outbound X-cloud-security-Virusscan: CLEAN X-cloud-security-disclaimer: This E-Mail was scanned by E-Mailservice on mx-relay10-hz2.antispameurope.com with 4fPXb60bzBz4FL03 X-cloud-security-connect: he-nlb01-hz1.hornetsecurity.com[94.100.132.6], TLS=1, IP=94.100.132.6 X-cloud-security-Digest: 9d7a5410827e20c72befa8843b80a097 X-cloud-security: scantime:3.725 DKIM-Signature: a=rsa-sha256; bh=S8KixDfsRAE0QkCkrj6ecFMAb3wezNZ0IVq81F5Gw8I=; c=relaxed/relaxed; d=ew.tq-group.com; h=content-type:mime-version:subject:from:to:message-id:date; s=hse1; t=1772441198; v=1; b=ARd5rIfUa7fomV6QOVnUoZI63uV30+KZgEyE/qjfmJVhy3YQx2hOPGsek/G3AGsuV1msCXbA 3GTpTZBt9lHkmDCs4T9qohPTdDxBSys2PvqQ1Y+p0BBLfvS6NbbMKpoGq4zasikmxQADE2YHO8D dHpb3qNXCBdylDI9bquqVFK09u9X+56WJIKvDISE16HeFdsPHQd1sS2AbH9eVzre/EFUkNmpi/6 4j+j/QepGd6RKsqIskwXcDhhSjnAvrz9Ta4VggVwhxPwQ+aBTrI6aVD49AEVHMt84crwLxyucHS kFd8a6ks8OxiVeRpKEJyu0/q4B56aTGOPvlxDmtcropzQ== UART1 operates in DCE mode, but the RTS/CTS pins were incorrectly configured using the DTE pinmux setting. Correct the pinmux to match DCE mode. Switching the RTS and CTS signals is fine for this board, as UART1 is routed to a pin header. Existing functionality is unaffected, as RTS/CTS could never have worked with the incorrect pinmux. Fixes: ddabb3ce3f90 ("arm64: dts: freescale: add TQMa8MPQL on MBa8MP-RAS314= ") Signed-off-by: Nora Schiffer Reviewed-by: Alexander Stein --- v2: updated commit message based on suggestion by Frank Li .../boot/dts/freescale/imx8mp-tqma8mpql-mba8mp-ras314.dts | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm64/boot/dts/freescale/imx8mp-tqma8mpql-mba8mp-ras314.d= ts b/arch/arm64/boot/dts/freescale/imx8mp-tqma8mpql-mba8mp-ras314.dts index b7f69c92b7748..1665a5030b993 100644 --- a/arch/arm64/boot/dts/freescale/imx8mp-tqma8mpql-mba8mp-ras314.dts +++ b/arch/arm64/boot/dts/freescale/imx8mp-tqma8mpql-mba8mp-ras314.dts @@ -848,8 +848,8 @@ pinctrl_tlv320aic3x04: tlv320aic3x04grp { pinctrl_uart1: uart1grp { fsl,pins =3D , , - , - ; + , + ; }; =20 pinctrl_uart1_gpio: uart1gpiogrp { --=20 TQ-Systems GmbH | M=C3=BChlstra=C3=9Fe 2, Gut Delling | 82229 Seefeld, Germ= any Amtsgericht M=C3=BCnchen, HRB 105018 Gesch=C3=A4ftsf=C3=BChrer: Detlef Schneider, R=C3=BCdiger Stahl, Stefan Sch= neider https://www.tq-group.com/