linux-kernel - [PATCH v2 09/10] arm64: dts: imx952-evk: Add flexcan support

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Message-Id: <20260111-imx952-dts-v2-v2-9-5773fa57e89e@nxp.com>
Date: Sun, 11 Jan 2026 20:40:15 +0800
From: "Peng Fan (OSS)" <peng.fan@....nxp.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>
Cc: devicetree@...r.kernel.org, imx@...ts.linux.dev, 
 linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org, 
 Peng Fan <peng.fan@....com>, Haibo Chen <haibo.chen@....com>
Subject: [PATCH v2 09/10] arm64: dts: imx952-evk: Add flexcan support

From: Haibo Chen <haibo.chen@....com>

Add flexcan support, since flexcan1 share pins with PDM,
default disable flexcan1.

Signed-off-by: Haibo Chen <haibo.chen@....com>
Signed-off-by: Peng Fan <peng.fan@....com>
---
 arch/arm64/boot/dts/freescale/imx952-evk.dts | 45 ++++++++++++++++++++++++++++
 1 file changed, 45 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx952-evk.dts b/arch/arm64/boot/dts/freescale/imx952-evk.dts
index 21b951a2156414819dfb589e5e7e736e7b1fe48a..bae7b88f8229babc42952b7abbeb912cbefc10fd 100644
--- a/arch/arm64/boot/dts/freescale/imx952-evk.dts
+++ b/arch/arm64/boot/dts/freescale/imx952-evk.dts
@@ -64,6 +64,22 @@ linux_cma: linux,cma {
 		};
 	};
 
+	flexcan1_phy: can-phy0 {
+		compatible = "nxp,tjr1443";
+		#phy-cells = <0>;
+		max-bitrate = <8000000>;
+		enable-gpios = <&pcal6416 6 GPIO_ACTIVE_HIGH>;
+		standby-gpios = <&pcal6416 5 GPIO_ACTIVE_LOW>;
+	};
+
+	flexcan2_phy: can-phy1 {
+		compatible = "nxp,tjr1443";
+		#phy-cells = <0>;
+		max-bitrate = <8000000>;
+		enable-gpios = <&i2c4_pcal6408 4 GPIO_ACTIVE_HIGH>;
+		standby-gpios = <&i2c4_pcal6408 3 GPIO_ACTIVE_LOW>;
+	};
+
 	reg_3p3v: regulator-3p3v {
 		compatible = "regulator-fixed";
 		regulator-max-microvolt = <3300000>;
@@ -108,6 +124,21 @@ reg_usb_vbus: regulator-vbus {
 
 };
 
+/* pin conflict with PDM */
+&flexcan1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_flexcan1>;
+	phys = <&flexcan1_phy>;
+	status = "disabled";
+};
+
+&flexcan2 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_flexcan2>;
+	phys = <&flexcan2_phy>;
+	status = "okay";
+};
+
 &lpi2c2 {
 	clock-frequency = <400000>;
 	pinctrl-names = "default";
@@ -340,6 +371,20 @@ &wdog3 {
 };
 
 &scmi_iomuxc {
+	pinctrl_flexcan1: flexcan1grp {
+		fsl,pins = <
+			IMX952_PAD_PDM_CLK__AONMIX_TOP_CAN1_TX			0x39e
+			IMX952_PAD_PDM_BIT_STREAM0__AONMIX_TOP_CAN1_RX		0x39e
+		>;
+	};
+
+	pinctrl_flexcan2: flexcan2grp {
+		fsl,pins = <
+			IMX952_PAD_GPIO_IO25__WAKEUPMIX_TOP_CAN2_TX		0x39e
+			IMX952_PAD_GPIO_IO27__WAKEUPMIX_TOP_CAN2_RX		0x39e
+		>;
+	};
+
 	pinctrl_lpi2c2: lpi2c2grp {
 		fsl,pins = <
 			IMX952_PAD_I2C2_SCL__AONMIX_TOP_LPI2C2_SCL		0x40000b9e

-- 
2.37.1