linux-kernel - [PATCH 13/19] arm64: dts: imx95-tqma9596sa: add gpio bus recovery for i2c

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20251030135306.1421154-3-alexander.stein@ew.tq-group.com>
Date: Thu, 30 Oct 2025 14:52:55 +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>,
	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: 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 13/19] arm64: dts: imx95-tqma9596sa: add gpio bus recovery for i2c

Add pinctrl group for GPIO based bus recovery.

Signed-off-by: Alexander Stein <alexander.stein@...tq-group.com>
---
 .../boot/dts/freescale/imx95-tqma9596sa.dtsi  | 30 +++++++++++++++++--
 1 file changed, 27 insertions(+), 3 deletions(-)

diff --git a/arch/arm64/boot/dts/freescale/imx95-tqma9596sa.dtsi b/arch/arm64/boot/dts/freescale/imx95-tqma9596sa.dtsi
index cc251505f6280..9c892cd8ff215 100644
--- a/arch/arm64/boot/dts/freescale/imx95-tqma9596sa.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx95-tqma9596sa.dtsi
@@ -263,8 +263,11 @@ expander1: gpio@75 {
 /* I2C_CAM0 */
 &lpi2c3 {
 	clock-frequency = <400000>;
-	pinctrl-names = "default";
+	pinctrl-names = "default", "gpio";
 	pinctrl-0 = <&pinctrl_lpi2c3>;
+	pinctrl-1 = <&pinctrl_lpi2c3_gpio>;
+	sda-gpios = <&gpio2 28 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+	scl-gpios = <&gpio2 29 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
 	status = "okay";
 
 	dp_bridge: dp-bridge@f {
@@ -299,16 +302,22 @@ dp_dsi_in: endpoint {
 /* I2C_CAM1 */
 &lpi2c4 {
 	clock-frequency = <400000>;
-	pinctrl-names = "default";
+	pinctrl-names = "default", "gpio";
 	pinctrl-0 = <&pinctrl_lpi2c4>;
+	pinctrl-1 = <&pinctrl_lpi2c4_gpio>;
+	sda-gpios = <&gpio2 30 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+	scl-gpios = <&gpio2 31 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
 	status = "okay";
 };
 
 /* I2C_LCD */
 &lpi2c6 {
 	clock-frequency = <400000>;
-	pinctrl-names = "default";
+	pinctrl-names = "default", "gpio";
 	pinctrl-0 = <&pinctrl_lpi2c6>;
+	pinctrl-1 = <&pinctrl_lpi2c6_gpio>;
+	sda-gpios = <&gpio2 2 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+	scl-gpios = <&gpio2 3 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
 	status = "okay";
 };
 
@@ -606,16 +615,31 @@ pinctrl_lpi2c3: lpi2c3grp {
 			   <IMX95_PAD_GPIO_IO29__LPI2C3_SCL			0x4000191e>;
 	};
 
+	pinctrl_lpi2c3_gpio: lpi2c3-gpiogrp {
+		fsl,pins = <IMX95_PAD_GPIO_IO28__GPIO2_IO_BIT28		0x4000191e>,
+			   <IMX95_PAD_GPIO_IO29__GPIO2_IO_BIT29		0x4000191e>;
+	};
+
 	pinctrl_lpi2c4: lpi2c4grp {
 		fsl,pins = <IMX95_PAD_GPIO_IO30__LPI2C4_SDA             0x4000191e>,
 			   <IMX95_PAD_GPIO_IO31__LPI2C4_SCL             0x4000191e>;
 	};
 
+	pinctrl_lpi2c4_gpio: lpi2c4-gpiogrp {
+		fsl,pins = <IMX95_PAD_GPIO_IO30__GPIO2_IO_BIT30		0x4000191e>,
+			   <IMX95_PAD_GPIO_IO31__GPIO2_IO_BIT31		0x4000191e>;
+	};
+
 	pinctrl_lpi2c6: lpi2c6grp {
 		fsl,pins = <IMX95_PAD_GPIO_IO02__LPI2C6_SDA             0x4000191e>,
 			   <IMX95_PAD_GPIO_IO03__LPI2C6_SCL             0x4000191e>;
 	};
 
+	pinctrl_lpi2c6_gpio: lpi2c6-gpiogrp {
+		fsl,pins = <IMX95_PAD_GPIO_IO02__GPIO2_IO_BIT2		0x4000191e>,
+			   <IMX95_PAD_GPIO_IO03__GPIO2_IO_BIT3		0x4000191e>;
+	};
+
 	pinctrl_lpspi3: lpspi3grp {
 		fsl,pins = <IMX95_PAD_GPIO_IO07__GPIO2_IO_BIT7		0x51e>,
 			   <IMX95_PAD_GPIO_IO08__GPIO2_IO_BIT8		0x51e>,
-- 
2.43.0