linux-kernel - [PATCH 02/14] arm64: dts: freescale: imx93-tqma9352: improve pad configuration

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Message-Id: <20240724125901.1391698-3-alexander.stein@ew.tq-group.com>
Date: Wed, 24 Jul 2024 14:58:49 +0200
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>,
	Shawn Guo <shawnguo@...nel.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Pengutronix Kernel Team <kernel@...gutronix.de>,
	Fabio Estevam <festevam@...il.com>,
	Alexander Stein <alexander.stein@...tq-group.com>
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 02/14] arm64: dts: freescale: imx93-tqma9352: improve pad configuration

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

- disable PU/PD if already done with external resistors
- do not configure Schmitt Trigger for outputs
- do not configure DSE / FSEL for inputs

Signed-off-by: Markus Niebel <Markus.Niebel@...tq-group.com>
Signed-off-by: Alexander Stein <alexander.stein@...tq-group.com>
---
 .../boot/dts/freescale/imx93-tqma9352.dtsi    | 56 +++++++++++--------
 1 file changed, 32 insertions(+), 24 deletions(-)

diff --git a/arch/arm64/boot/dts/freescale/imx93-tqma9352.dtsi b/arch/arm64/boot/dts/freescale/imx93-tqma9352.dtsi
index 17ccf38ebd56..d07eca6526db 100644
--- a/arch/arm64/boot/dts/freescale/imx93-tqma9352.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx93-tqma9352.dtsi
@@ -162,55 +162,63 @@ &wdog3 {
 &iomuxc {
 	pinctrl_flexspi1: flexspi1grp {
 		fsl,pins = <
-			MX93_PAD_SD3_CMD__FLEXSPI1_A_SS0_B	0x3fe
-			MX93_PAD_SD3_CLK__FLEXSPI1_A_SCLK	0x3fe
-			MX93_PAD_SD3_DATA0__FLEXSPI1_A_DATA00	0x3fe
-			MX93_PAD_SD3_DATA1__FLEXSPI1_A_DATA01	0x3fe
-			MX93_PAD_SD3_DATA2__FLEXSPI1_A_DATA02	0x3fe
-			MX93_PAD_SD3_DATA3__FLEXSPI1_A_DATA03	0x3fe
+			/* FSEL 3  | DSE X6 */
+			MX93_PAD_SD3_CMD__FLEXSPI1_A_SS0_B	0x01fe
+			MX93_PAD_SD3_CLK__FLEXSPI1_A_SCLK	0x01fe
+			/* HYS | PU | FSEL 3  | DSE X6 */
+			MX93_PAD_SD3_DATA0__FLEXSPI1_A_DATA00	0x13fe
+			MX93_PAD_SD3_DATA1__FLEXSPI1_A_DATA01	0x13fe
+			/* HYS | FSEL 3  | DSE X6 (external PU) */
+			MX93_PAD_SD3_DATA2__FLEXSPI1_A_DATA02	0x11fe
+			MX93_PAD_SD3_DATA3__FLEXSPI1_A_DATA03	0x11fe
 		>;
 	};
 
 	pinctrl_lpi2c1: lpi2c1grp {
 		fsl,pins = <
-			MX93_PAD_I2C1_SCL__LPI2C1_SCL		0x40000b9e
-			MX93_PAD_I2C1_SDA__LPI2C1_SDA		0x40000b9e
+			/* SION | OD | FSEL 3 | DSE X4 */
+			MX93_PAD_I2C1_SCL__LPI2C1_SCL		0x4000199e
+			MX93_PAD_I2C1_SDA__LPI2C1_SDA		0x4000199e
 		>;
 	};
 
 	pinctrl_pca9451: pca9451grp {
 		fsl,pins = <
-			MX93_PAD_I2C2_SDA__GPIO1_IO03		0x1306
+			/* HYS | PU */
+			MX93_PAD_I2C2_SDA__GPIO1_IO03		0x1200
 		>;
 	};
 
 	pinctrl_reg_usdhc2_vmmc: regusdhc2vmmcgrp {
 		fsl,pins = <
-			MX93_PAD_SD2_RESET_B__GPIO3_IO07	0x1306
+			/* FSEL 2 | DSE X2 */
+			MX93_PAD_SD2_RESET_B__GPIO3_IO07	0x106
 		>;
 	};
 
 	pinctrl_usdhc1: usdhc1grp {
 		fsl,pins = <
-			/* HYS | PU | PD | FSEL_3 | X5 */
-			MX93_PAD_SD1_CLK__USDHC1_CLK		0x17be
-			MX93_PAD_SD1_STROBE__USDHC1_STROBE	0x17be
-			/* HYS | PU | FSEL_3 | X5 */
-			MX93_PAD_SD1_CMD__USDHC1_CMD		0x13be
-			/* HYS | PU | FSEL_3 | X4 */
-			MX93_PAD_SD1_DATA0__USDHC1_DATA0	0x139e
-			MX93_PAD_SD1_DATA1__USDHC1_DATA1	0x139e
-			MX93_PAD_SD1_DATA2__USDHC1_DATA2	0x139e
-			MX93_PAD_SD1_DATA3__USDHC1_DATA3	0x139e
-			MX93_PAD_SD1_DATA4__USDHC1_DATA4	0x139e
-			MX93_PAD_SD1_DATA5__USDHC1_DATA5	0x139e
-			MX93_PAD_SD1_DATA6__USDHC1_DATA6	0x139e
-			MX93_PAD_SD1_DATA7__USDHC1_DATA7	0x139e
+			/* PD | FSEL 3 | DSE X5 */
+			MX93_PAD_SD1_CLK__USDHC1_CLK		0x5be
+			/* HYS | FSEL 0 | no drive */
+			MX93_PAD_SD1_STROBE__USDHC1_STROBE	0x1000
+			/* HYS | FSEL 3 | X5 */
+			MX93_PAD_SD1_CMD__USDHC1_CMD		0x11be
+			/* HYS | FSEL 3 | X4 */
+			MX93_PAD_SD1_DATA0__USDHC1_DATA0	0x119e
+			MX93_PAD_SD1_DATA1__USDHC1_DATA1	0x119e
+			MX93_PAD_SD1_DATA2__USDHC1_DATA2	0x119e
+			MX93_PAD_SD1_DATA3__USDHC1_DATA3	0x119e
+			MX93_PAD_SD1_DATA4__USDHC1_DATA4	0x119e
+			MX93_PAD_SD1_DATA5__USDHC1_DATA5	0x119e
+			MX93_PAD_SD1_DATA6__USDHC1_DATA6	0x119e
+			MX93_PAD_SD1_DATA7__USDHC1_DATA7	0x119e
 		>;
 	};
 
 	pinctrl_wdog: wdoggrp {
 		fsl,pins = <
+			/* PU | FSEL 1 | DSE X4 */
 			MX93_PAD_WDOG_ANY__WDOG1_WDOG_ANY	0x31e
 		>;
 	};
-- 
2.34.1