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Received: from 89-212-21-243.static.t-2.net ([89.212.21.243]:40514 helo=localhost.localdomain) by cp2.siel.si with esmtpsa (TLS1.3) tls TLS_AES_256_GCM_SHA384 (Exim 4.99.2) (envelope-from ) id 1wKs6Y-0000000AGWs-3xYq; Thu, 07 May 2026 08:21:02 +0200 From: Primoz Fiser To: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Frank Li , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam Cc: devicetree@vger.kernel.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, upstream@lists.phytec.de Subject: [PATCH 3/3] arm64: dts: freescale: imx{91,93}-phycore-som: Improve USDHC signals Date: Thu, 7 May 2026 08:20:58 +0200 Message-Id: <20260507062058.1711292-3-primoz.fiser@norik.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20260507062058.1711292-1-primoz.fiser@norik.com> References: <20260507062058.1711292-1-primoz.fiser@norik.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - cp2.siel.si X-AntiAbuse: Original Domain - lists.infradead.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - norik.com X-Get-Message-Sender-Via: cp2.siel.si: authenticated_id: primoz.fiser@norik.com X-Authenticated-Sender: cp2.siel.si: primoz.fiser@norik.com X-Source: X-Source-Args: X-Source-Dir: X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260507_075039_537841_A5C81995 X-CRM114-Status: UNSURE ( 5.63 ) X-CRM114-Notice: Please train this message. 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: Christoph Stoidner Apply improved drive-strength values and pull-up/down configurations as devised from hardware measurements to improve signal quality on PHYTEC phyCORE-i.MX 91/93 SoM based boards. Also improve eMMC HS400 mode by setting property "fsl,strobe-dll-delay-target" which shifts the strobe DLL sampling window to the optimal position. Signed-off-by: Christoph Stoidner Signed-off-by: Primoz Fiser --- .../boot/dts/freescale/imx91-phyboard-segin.dts | 6 +++--- .../arm64/boot/dts/freescale/imx91-phycore-som.dtsi | 13 +++++++------ .../boot/dts/freescale/imx93-phyboard-nash.dts | 8 ++++---- .../boot/dts/freescale/imx93-phyboard-segin.dts | 6 +++--- .../arm64/boot/dts/freescale/imx93-phycore-som.dtsi | 13 +++++++------ 5 files changed, 24 insertions(+), 22 deletions(-) diff --git a/arch/arm64/boot/dts/freescale/imx91-phyboard-segin.dts b/arch/arm64/boot/dts/freescale/imx91-phyboard-segin.dts index 7b18a58024f5..aec83da87c4e 100644 --- a/arch/arm64/boot/dts/freescale/imx91-phyboard-segin.dts +++ b/arch/arm64/boot/dts/freescale/imx91-phyboard-segin.dts @@ -309,7 +309,7 @@ MX91_PAD_SD2_CD_B__GPIO3_IO0 0x31e pinctrl_usdhc2_default: usdhc2grp { fsl,pins = < - MX91_PAD_SD2_CLK__USDHC2_CLK 0x158e + MX91_PAD_SD2_CLK__USDHC2_CLK 0x118e MX91_PAD_SD2_CMD__USDHC2_CMD 0x1382 MX91_PAD_SD2_DATA0__USDHC2_DATA0 0x1386 MX91_PAD_SD2_DATA1__USDHC2_DATA1 0x138e @@ -321,7 +321,7 @@ MX91_PAD_SD2_VSELECT__USDHC2_VSELECT 0x51e pinctrl_usdhc2_100mhz: usdhc2-100mhzgrp { fsl,pins = < - MX91_PAD_SD2_CLK__USDHC2_CLK 0x159e + MX91_PAD_SD2_CLK__USDHC2_CLK 0x119e MX91_PAD_SD2_CMD__USDHC2_CMD 0x139e MX91_PAD_SD2_DATA0__USDHC2_DATA0 0x138e MX91_PAD_SD2_DATA1__USDHC2_DATA1 0x138e @@ -333,7 +333,7 @@ MX91_PAD_SD2_VSELECT__USDHC2_VSELECT 0x51e pinctrl_usdhc2_200mhz: usdhc2-200mhzgrp { fsl,pins = < - MX91_PAD_SD2_CLK__USDHC2_CLK 0x158e + MX91_PAD_SD2_CLK__USDHC2_CLK 0x118e MX91_PAD_SD2_CMD__USDHC2_CMD 0x138e MX91_PAD_SD2_DATA0__USDHC2_DATA0 0x139e MX91_PAD_SD2_DATA1__USDHC2_DATA1 0x139e diff --git a/arch/arm64/boot/dts/freescale/imx91-phycore-som.dtsi b/arch/arm64/boot/dts/freescale/imx91-phycore-som.dtsi index 8038d92da2aa..d9397080fe48 100644 --- a/arch/arm64/boot/dts/freescale/imx91-phycore-som.dtsi +++ b/arch/arm64/boot/dts/freescale/imx91-phycore-som.dtsi @@ -194,6 +194,7 @@ &usdhc1 { bus-width = <8>; non-removable; no-1-8-v; + fsl,strobe-dll-delay-target = <1>; status = "okay"; }; @@ -252,7 +253,7 @@ MX91_PAD_ENET2_RD3__GPIO4_IO27 0x31e pinctrl_usdhc1: usdhc1grp { fsl,pins = < - MX91_PAD_SD1_CLK__USDHC1_CLK 0x179e + MX91_PAD_SD1_CLK__USDHC1_CLK 0x119e MX91_PAD_SD1_CMD__USDHC1_CMD 0x1386 MX91_PAD_SD1_DATA0__USDHC1_DATA0 0x138e MX91_PAD_SD1_DATA1__USDHC1_DATA1 0x1386 @@ -262,13 +263,13 @@ MX91_PAD_SD1_DATA4__USDHC1_DATA4 0x1386 MX91_PAD_SD1_DATA5__USDHC1_DATA5 0x1386 MX91_PAD_SD1_DATA6__USDHC1_DATA6 0x1386 MX91_PAD_SD1_DATA7__USDHC1_DATA7 0x1386 - MX91_PAD_SD1_STROBE__USDHC1_STROBE 0x179e + MX91_PAD_SD1_STROBE__USDHC1_STROBE 0x159e >; }; pinctrl_usdhc1_100mhz: usdhc1-100mhzgrp { fsl,pins = < - MX91_PAD_SD1_CLK__USDHC1_CLK 0x17be + MX91_PAD_SD1_CLK__USDHC1_CLK 0x11be MX91_PAD_SD1_CMD__USDHC1_CMD 0x139e MX91_PAD_SD1_DATA0__USDHC1_DATA0 0x138e MX91_PAD_SD1_DATA1__USDHC1_DATA1 0x139e @@ -278,13 +279,13 @@ MX91_PAD_SD1_DATA4__USDHC1_DATA4 0x139e MX91_PAD_SD1_DATA5__USDHC1_DATA5 0x139e MX91_PAD_SD1_DATA6__USDHC1_DATA6 0x139e MX91_PAD_SD1_DATA7__USDHC1_DATA7 0x139e - MX91_PAD_SD1_STROBE__USDHC1_STROBE 0x179e + MX91_PAD_SD1_STROBE__USDHC1_STROBE 0x159e >; }; pinctrl_usdhc1_200mhz: usdhc1-200mhzgrp { fsl,pins = < - MX91_PAD_SD1_CLK__USDHC1_CLK 0x17be + MX91_PAD_SD1_CLK__USDHC1_CLK 0x11be MX91_PAD_SD1_CMD__USDHC1_CMD 0x139e MX91_PAD_SD1_DATA0__USDHC1_DATA0 0x139e MX91_PAD_SD1_DATA1__USDHC1_DATA1 0x13be @@ -294,7 +295,7 @@ MX91_PAD_SD1_DATA4__USDHC1_DATA4 0x13be MX91_PAD_SD1_DATA5__USDHC1_DATA5 0x13be MX91_PAD_SD1_DATA6__USDHC1_DATA6 0x13be MX91_PAD_SD1_DATA7__USDHC1_DATA7 0x13be - MX91_PAD_SD1_STROBE__USDHC1_STROBE 0x179e + MX91_PAD_SD1_STROBE__USDHC1_STROBE 0x159e >; }; diff --git a/arch/arm64/boot/dts/freescale/imx93-phyboard-nash.dts b/arch/arm64/boot/dts/freescale/imx93-phyboard-nash.dts index eac389ed30f3..a7bd490b042b 100644 --- a/arch/arm64/boot/dts/freescale/imx93-phyboard-nash.dts +++ b/arch/arm64/boot/dts/freescale/imx93-phyboard-nash.dts @@ -339,8 +339,8 @@ MX93_PAD_SD2_CD_B__GPIO3_IO00 0x31e /* need to config the SION for data and cmd pad, refer to ERR052021 */ pinctrl_usdhc2_default: usdhc2grp { fsl,pins = < - MX93_PAD_SD2_CLK__USDHC2_CLK 0x159e - MX93_PAD_SD2_CMD__USDHC2_CMD 0x4000178e + MX93_PAD_SD2_CLK__USDHC2_CLK 0x119e + MX93_PAD_SD2_CMD__USDHC2_CMD 0x4000138e MX93_PAD_SD2_DATA0__USDHC2_DATA0 0x40001386 MX93_PAD_SD2_DATA1__USDHC2_DATA1 0x40001386 MX93_PAD_SD2_DATA2__USDHC2_DATA2 0x40001386 @@ -352,7 +352,7 @@ MX93_PAD_SD2_VSELECT__USDHC2_VSELECT 0x51e /* need to config the SION for data and cmd pad, refer to ERR052021 */ pinctrl_usdhc2_100mhz: usdhc2-100mhzgrp { fsl,pins = < - MX93_PAD_SD2_CLK__USDHC2_CLK 0x159e + MX93_PAD_SD2_CLK__USDHC2_CLK 0x119e MX93_PAD_SD2_CMD__USDHC2_CMD 0x4000139e MX93_PAD_SD2_DATA0__USDHC2_DATA0 0x4000139e MX93_PAD_SD2_DATA1__USDHC2_DATA1 0x4000139e @@ -365,7 +365,7 @@ MX93_PAD_SD2_VSELECT__USDHC2_VSELECT 0x51e /* need to config the SION for data and cmd pad, refer to ERR052021 */ pinctrl_usdhc2_200mhz: usdhc2-200mhzgrp { fsl,pins = < - MX93_PAD_SD2_CLK__USDHC2_CLK 0x159e + MX93_PAD_SD2_CLK__USDHC2_CLK 0x119e MX93_PAD_SD2_CMD__USDHC2_CMD 0x4000139e MX93_PAD_SD2_DATA0__USDHC2_DATA0 0x4000139e MX93_PAD_SD2_DATA1__USDHC2_DATA1 0x4000139e diff --git a/arch/arm64/boot/dts/freescale/imx93-phyboard-segin.dts b/arch/arm64/boot/dts/freescale/imx93-phyboard-segin.dts index a982606de1ee..291b409b159f 100644 --- a/arch/arm64/boot/dts/freescale/imx93-phyboard-segin.dts +++ b/arch/arm64/boot/dts/freescale/imx93-phyboard-segin.dts @@ -310,7 +310,7 @@ MX93_PAD_SD2_CD_B__GPIO3_IO00 0x31e /* need to config the SION for data and cmd pad, refer to ERR052021 */ pinctrl_usdhc2_default: usdhc2grp { fsl,pins = < - MX93_PAD_SD2_CLK__USDHC2_CLK 0x159e + MX93_PAD_SD2_CLK__USDHC2_CLK 0x119e MX93_PAD_SD2_CMD__USDHC2_CMD 0x4000139e MX93_PAD_SD2_DATA0__USDHC2_DATA0 0x4000138e MX93_PAD_SD2_DATA1__USDHC2_DATA1 0x4000138e @@ -323,7 +323,7 @@ MX93_PAD_SD2_VSELECT__USDHC2_VSELECT 0x51e /* need to config the SION for data and cmd pad, refer to ERR052021 */ pinctrl_usdhc2_100mhz: usdhc2-100mhzgrp { fsl,pins = < - MX93_PAD_SD2_CLK__USDHC2_CLK 0x159e + MX93_PAD_SD2_CLK__USDHC2_CLK 0x119e MX93_PAD_SD2_CMD__USDHC2_CMD 0x4000139e MX93_PAD_SD2_DATA0__USDHC2_DATA0 0x4000138e MX93_PAD_SD2_DATA1__USDHC2_DATA1 0x4000138e @@ -336,7 +336,7 @@ MX93_PAD_SD2_VSELECT__USDHC2_VSELECT 0x51e /* need to config the SION for data and cmd pad, refer to ERR052021 */ pinctrl_usdhc2_200mhz: usdhc2-200mhzgrp { fsl,pins = < - MX93_PAD_SD2_CLK__USDHC2_CLK 0x158e + MX93_PAD_SD2_CLK__USDHC2_CLK 0x118e MX93_PAD_SD2_CMD__USDHC2_CMD 0x4000139e MX93_PAD_SD2_DATA0__USDHC2_DATA0 0x4000139e MX93_PAD_SD2_DATA1__USDHC2_DATA1 0x4000139e diff --git a/arch/arm64/boot/dts/freescale/imx93-phycore-som.dtsi b/arch/arm64/boot/dts/freescale/imx93-phycore-som.dtsi index a624aed48efe..4276140afb5c 100644 --- a/arch/arm64/boot/dts/freescale/imx93-phycore-som.dtsi +++ b/arch/arm64/boot/dts/freescale/imx93-phycore-som.dtsi @@ -196,6 +196,7 @@ &usdhc1 { bus-width = <8>; non-removable; no-1-8-v; + fsl,strobe-dll-delay-target = <1>; status = "okay"; }; @@ -255,7 +256,7 @@ MX93_PAD_ENET2_RD3__GPIO4_IO27 0x31e /* need to config the SION for data and cmd pad, refer to ERR052021 */ pinctrl_usdhc1: usdhc1grp { fsl,pins = < - MX93_PAD_SD1_CLK__USDHC1_CLK 0x179e + MX93_PAD_SD1_CLK__USDHC1_CLK 0x119e MX93_PAD_SD1_CMD__USDHC1_CMD 0x40001386 MX93_PAD_SD1_DATA0__USDHC1_DATA0 0x4000138e MX93_PAD_SD1_DATA1__USDHC1_DATA1 0x40001386 @@ -265,14 +266,14 @@ MX93_PAD_SD1_DATA4__USDHC1_DATA4 0x40001386 MX93_PAD_SD1_DATA5__USDHC1_DATA5 0x40001386 MX93_PAD_SD1_DATA6__USDHC1_DATA6 0x40001386 MX93_PAD_SD1_DATA7__USDHC1_DATA7 0x40001386 - MX93_PAD_SD1_STROBE__USDHC1_STROBE 0x179e + MX93_PAD_SD1_STROBE__USDHC1_STROBE 0x159e >; }; /* need to config the SION for data and cmd pad, refer to ERR052021 */ pinctrl_usdhc1_100mhz: usdhc1-100mhzgrp { fsl,pins = < - MX93_PAD_SD1_CLK__USDHC1_CLK 0x17be + MX93_PAD_SD1_CLK__USDHC1_CLK 0x11be MX93_PAD_SD1_CMD__USDHC1_CMD 0x4000139e MX93_PAD_SD1_DATA0__USDHC1_DATA0 0x4000138e MX93_PAD_SD1_DATA1__USDHC1_DATA1 0x4000139e @@ -282,14 +283,14 @@ MX93_PAD_SD1_DATA4__USDHC1_DATA4 0x4000139e MX93_PAD_SD1_DATA5__USDHC1_DATA5 0x4000139e MX93_PAD_SD1_DATA6__USDHC1_DATA6 0x4000139e MX93_PAD_SD1_DATA7__USDHC1_DATA7 0x4000139e - MX93_PAD_SD1_STROBE__USDHC1_STROBE 0x179e + MX93_PAD_SD1_STROBE__USDHC1_STROBE 0x159e >; }; /* need to config the SION for data and cmd pad, refer to ERR052021 */ pinctrl_usdhc1_200mhz: usdhc1-200mhzgrp { fsl,pins = < - MX93_PAD_SD1_CLK__USDHC1_CLK 0x17be + MX93_PAD_SD1_CLK__USDHC1_CLK 0x11be MX93_PAD_SD1_CMD__USDHC1_CMD 0x4000139e MX93_PAD_SD1_DATA0__USDHC1_DATA0 0x4000139e MX93_PAD_SD1_DATA1__USDHC1_DATA1 0x400013be @@ -299,7 +300,7 @@ MX93_PAD_SD1_DATA4__USDHC1_DATA4 0x400013be MX93_PAD_SD1_DATA5__USDHC1_DATA5 0x400013be MX93_PAD_SD1_DATA6__USDHC1_DATA6 0x400013be MX93_PAD_SD1_DATA7__USDHC1_DATA7 0x400013be - MX93_PAD_SD1_STROBE__USDHC1_STROBE 0x179e + MX93_PAD_SD1_STROBE__USDHC1_STROBE 0x159e >; }; -- 2.34.1