linux-kernel - [PATCH V2] arm64: dts: imx8mp-evk: add CAN support

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Message-Id: <20201102021634.6480-1-qiangqing.zhang@nxp.com>
Date:   Mon,  2 Nov 2020 10:16:34 +0800
From:   Joakim Zhang <qiangqing.zhang@....com>
To:     shawnguo@...nel.org, s.hauer@...gutronix.de, festevam@...il.com
Cc:     linux-imx@....com, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        mkl@...gutronix.de
Subject: [PATCH V2] arm64: dts: imx8mp-evk: add CAN support

Add CAN device node and pinctrl on i.MX8MP evk board.

Signed-off-by: Joakim Zhang <qiangqing.zhang@....com>
---
ChangeLogs:
V1->V2:
	* add missing space before '=',
	fsl,clk-source= /bits/ 8 <0> -> fsl,clk-source = /bits/ 8 <0>
---
 arch/arm64/boot/dts/freescale/imx8mp-evk.dts | 62 ++++++++++++++++++++
 arch/arm64/boot/dts/freescale/imx8mp.dtsi    | 30 ++++++++++
 2 files changed, 92 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8mp-evk.dts b/arch/arm64/boot/dts/freescale/imx8mp-evk.dts
index 908b92bb4dcd..b10dce8767a4 100644
--- a/arch/arm64/boot/dts/freescale/imx8mp-evk.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mp-evk.dts
@@ -33,6 +33,28 @@
 		      <0x1 0x00000000 0 0xc0000000>;
 	};
 
+	reg_can1_stby: regulator-can1-stby {
+		compatible = "regulator-fixed";
+		regulator-name = "can1-stby";
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_flexcan1_reg>;
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		gpio = <&gpio5 5 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+	};
+
+	reg_can2_stby: regulator-can2-stby {
+		compatible = "regulator-fixed";
+		regulator-name = "can2-stby";
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_flexcan2_reg>;
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		gpio = <&gpio4 27 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+	};
+
 	reg_usdhc2_vmmc: regulator-usdhc2 {
 		compatible = "regulator-fixed";
 		pinctrl-names = "default";
@@ -45,6 +67,20 @@
 	};
 };
 
+&flexcan1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_flexcan1>;
+	xceiver-supply = <&reg_can1_stby>;
+	status = "okay";
+};
+
+&flexcan2 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_flexcan2>;
+	xceiver-supply = <&reg_can2_stby>;
+	status = "disabled";/* can2 pin conflict with pdm */
+};
+
 &fec {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_fec>;
@@ -144,6 +180,32 @@
 		>;
 	};
 
+	pinctrl_flexcan1: flexcan1grp {
+		fsl,pins = <
+			MX8MP_IOMUXC_SPDIF_RX__CAN1_RX          0x154
+			MX8MP_IOMUXC_SPDIF_TX__CAN1_TX          0x154
+		>;
+	};
+
+	pinctrl_flexcan2: flexcan2grp {
+		fsl,pins = <
+			MX8MP_IOMUXC_SAI5_MCLK__CAN2_RX         0x154
+			MX8MP_IOMUXC_SAI5_RXD3__CAN2_TX         0x154
+		>;
+	};
+
+	pinctrl_flexcan1_reg: flexcan1reggrp {
+		fsl,pins = <
+			MX8MP_IOMUXC_SPDIF_EXT_CLK__GPIO5_IO05  0x154   /* CAN1_STBY */
+		>;
+	};
+
+	pinctrl_flexcan2_reg: flexcan2reggrp {
+		fsl,pins = <
+			MX8MP_IOMUXC_SAI2_MCLK__GPIO4_IO27      0x154   /* CAN2_STBY */
+		>;
+	};
+
 	pinctrl_gpio_led: gpioledgrp {
 		fsl,pins = <
 			MX8MP_IOMUXC_NAND_READY_B__GPIO3_IO16	0x19
diff --git a/arch/arm64/boot/dts/freescale/imx8mp.dtsi b/arch/arm64/boot/dts/freescale/imx8mp.dtsi
index 479312293036..ecccfbb4f5ad 100644
--- a/arch/arm64/boot/dts/freescale/imx8mp.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mp.dtsi
@@ -552,6 +552,36 @@
 				status = "disabled";
 			};
 
+			flexcan1: can@...c0000 {
+				compatible = "fsl,imx8mp-flexcan", "fsl,imx6q-flexcan";
+				reg = <0x308c0000 0x10000>;
+				interrupts = <GIC_SPI 142 IRQ_TYPE_LEVEL_HIGH>;
+				clocks = <&clk IMX8MP_CLK_IPG_ROOT>,
+					 <&clk IMX8MP_CLK_CAN1_ROOT>;
+				clock-names = "ipg", "per";
+				assigned-clocks = <&clk IMX8MP_CLK_CAN1>;
+				assigned-clock-parents = <&clk IMX8MP_SYS_PLL1_40M>;
+				assigned-clock-rates = <40000000>;
+				fsl,clk-source = /bits/ 8 <0>;
+				fsl,stop-mode = <&gpr 0x10 4>;
+				status = "disabled";
+			};
+
+			flexcan2: can@...d0000 {
+				compatible = "fsl,imx8mp-flexcan", "fsl,imx6q-flexcan";
+				reg = <0x308d0000 0x10000>;
+				interrupts = <GIC_SPI 144 IRQ_TYPE_LEVEL_HIGH>;
+				clocks = <&clk IMX8MP_CLK_IPG_ROOT>,
+					 <&clk IMX8MP_CLK_CAN2_ROOT>;
+				clock-names = "ipg", "per";
+				assigned-clocks = <&clk IMX8MP_CLK_CAN2>;
+				assigned-clock-parents = <&clk IMX8MP_SYS_PLL1_40M>;
+				assigned-clock-rates = <40000000>;
+				fsl,clk-source = /bits/ 8 <0>;
+				fsl,stop-mode = <&gpr 0x10 5>;
+				status = "disabled";
+			};
+
 			crypto: crypto@...00000 {
 				compatible = "fsl,sec-v4.0";
 				#address-cells = <1>;
-- 
2.17.1