linux-kernel - [PATCH 1/2] arm64: dts: imx91-tqma9131: improve eMMC pad configuration

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Message-ID: <20260209155015.267008-1-alexander.stein@ew.tq-group.com>
Date: Mon,  9 Feb 2026 16:50:13 +0100
From: Alexander Stein <alexander.stein@...tq-group.com>
To: Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Frank Li <Frank.Li@....com>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Pengutronix Kernel Team <kernel@...gutronix.de>,
	Fabio Estevam <festevam@...il.com>,
	Alexander Stein <alexander.stein@...tq-group.com>,
	Shawn Guo <shawnguo@...nel.org>
Cc: Markus Niebel <Markus.Niebel@...tq-group.com>,
	linux@...tq-group.com,
	devicetree@...r.kernel.org,
	imx@...ts.linux.dev,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH 1/2] arm64: dts: imx91-tqma9131: improve eMMC pad configuration

From: Markus Niebel <Markus.Niebel@...tq-group.com>

Use DSE x4 an PullUp for CMD an DAT, DSE x4 and PullDown for CLK.
This improves stability and detection at low temperatures under -25°C.

Fixes: e71db39f0c7c ("arm64: dts: freescale: add initial device tree for TQMa91xx/MBa91xxCA")
Signed-off-by: Markus Niebel <Markus.Niebel@...tq-group.com>
Signed-off-by: Alexander Stein <alexander.stein@...tq-group.com>
---
 .../boot/dts/freescale/imx91-tqma9131.dtsi    | 20 +++++++++----------
 1 file changed, 10 insertions(+), 10 deletions(-)

diff --git a/arch/arm64/boot/dts/freescale/imx91-tqma9131.dtsi b/arch/arm64/boot/dts/freescale/imx91-tqma9131.dtsi
index 5792952b7a8e1..c99d7bc168483 100644
--- a/arch/arm64/boot/dts/freescale/imx91-tqma9131.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx91-tqma9131.dtsi
@@ -272,20 +272,20 @@ pinctrl_reg_usdhc2_vmmc: regusdhc2vmmcgrp {
 	/* enable SION for data and cmd pad due to ERR052021 */
 	pinctrl_usdhc1: usdhc1grp {
 		fsl,pins = /* PD | FSEL 3 | DSE X5 */
-			   <MX91_PAD_SD1_CLK__USDHC1_CLK		0x5be>,
+			   <MX91_PAD_SD1_CLK__USDHC1_CLK		0x59e>,
 			   /* HYS | FSEL 0 | no drive */
 			   <MX91_PAD_SD1_STROBE__USDHC1_STROBE		0x1000>,
 			   /* HYS | FSEL 3 | X5 */
-			   <MX91_PAD_SD1_CMD__USDHC1_CMD		0x400011be>,
+			   <MX91_PAD_SD1_CMD__USDHC1_CMD		0x4000139e>,
 			   /* HYS | FSEL 3 | X4 */
-			   <MX91_PAD_SD1_DATA0__USDHC1_DATA0		0x4000119e>,
-			   <MX91_PAD_SD1_DATA1__USDHC1_DATA1		0x4000119e>,
-			   <MX91_PAD_SD1_DATA2__USDHC1_DATA2		0x4000119e>,
-			   <MX91_PAD_SD1_DATA3__USDHC1_DATA3		0x4000119e>,
-			   <MX91_PAD_SD1_DATA4__USDHC1_DATA4		0x4000119e>,
-			   <MX91_PAD_SD1_DATA5__USDHC1_DATA5		0x4000119e>,
-			   <MX91_PAD_SD1_DATA6__USDHC1_DATA6		0x4000119e>,
-			   <MX91_PAD_SD1_DATA7__USDHC1_DATA7		0x4000119e>;
+			   <MX91_PAD_SD1_DATA0__USDHC1_DATA0		0x4000139e>,
+			   <MX91_PAD_SD1_DATA1__USDHC1_DATA1		0x4000139e>,
+			   <MX91_PAD_SD1_DATA2__USDHC1_DATA2		0x4000139e>,
+			   <MX91_PAD_SD1_DATA3__USDHC1_DATA3		0x4000139e>,
+			   <MX91_PAD_SD1_DATA4__USDHC1_DATA4		0x4000139e>,
+			   <MX91_PAD_SD1_DATA5__USDHC1_DATA5		0x4000139e>,
+			   <MX91_PAD_SD1_DATA6__USDHC1_DATA6		0x4000139e>,
+			   <MX91_PAD_SD1_DATA7__USDHC1_DATA7		0x4000139e>;
 	};
 
 	pinctrl_wdog: wdoggrp {
-- 
2.43.0