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From:   Joakim Zhang <qiangqing.zhang@nxp.com>
To:     "shawnguo@kernel.org" <shawnguo@kernel.org>,
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        "A.s. Dong" <aisheng.dong@nxp.com>,
        Joakim Zhang <qiangqing.zhang@nxp.com>
Subject: [PATCH] ARM: dts: imx6sx-sdb: Add flexcan support
Thread-Topic: [PATCH] ARM: dts: imx6sx-sdb: Add flexcan support
Thread-Index: AQHUZ5AX9bFhc2fvBEqua6kfXbFzXQ==
Date:   Fri, 19 Oct 2018 09:42:47 +0000
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From: Dong Aisheng <aisheng.dong@nxp.com>

CAN transceiver is different on RevA and RevB board.
It's active high on RevA while active low on Rev B.

Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: Joakim Zhang <qiangqing.zhang@nxp.com>
---
 arch/arm/boot/dts/imx6sx-sdb.dts  |  5 ++++
 arch/arm/boot/dts/imx6sx-sdb.dtsi | 42 +++++++++++++++++++++++++++++++
 2 files changed, 47 insertions(+)

diff --git a/arch/arm/boot/dts/imx6sx-sdb.dts b/arch/arm/boot/dts/imx6sx-sd=
b.dts
index 6dd9bebfe027..092b8de142a8 100644
--- a/arch/arm/boot/dts/imx6sx-sdb.dts
+++ b/arch/arm/boot/dts/imx6sx-sdb.dts
@@ -10,6 +10,11 @@
=20
 / {
 	model =3D "Freescale i.MX6 SoloX SDB RevB Board";
+
+	/* Transceiver EN/STBY is active low on RevB board */
+	reg_can_stby: regulator-can-stby {
+		gpio =3D <&gpio4 27 GPIO_ACTIVE_LOW>;
+	};
 };
=20
 &i2c1 {
diff --git a/arch/arm/boot/dts/imx6sx-sdb.dtsi b/arch/arm/boot/dts/imx6sx-s=
db.dtsi
index f8f31872fa14..e37ec4b396a2 100644
--- a/arch/arm/boot/dts/imx6sx-sdb.dtsi
+++ b/arch/arm/boot/dts/imx6sx-sdb.dtsi
@@ -136,6 +136,20 @@
 		regulator-max-microvolt =3D <5000000>;
 	};
=20
+	reg_can_en: regulator-can-en {
+		compatible =3D "regulator-fixed";
+		regulator-name =3D "can-en";
+		regulator-min-microvolt =3D <3300000>;
+		regulator-max-microvolt =3D <3300000>;
+	};
+
+	reg_can_stby: regulator-can-stby {
+		compatible =3D "regulator-fixed";
+		regulator-name =3D "can-stby";
+		regulator-min-microvolt =3D <3300000>;
+		regulator-max-microvolt =3D <3300000>;
+	};
+
 	sound {
 		compatible =3D "fsl,imx6sx-sdb-wm8962", "fsl,imx-audio-wm8962";
 		model =3D "wm8962-audio";
@@ -202,6 +216,20 @@
 	status =3D "okay";
 };
=20
+&flexcan1 {
+	pinctrl-names =3D "default";
+	pinctrl-0 =3D <&pinctrl_flexcan1>;
+	xceiver-supply =3D <&reg_can_stby>;
+	status =3D "okay";
+};
+
+&flexcan2 {
+	pinctrl-names =3D "default";
+	pinctrl-0 =3D <&pinctrl_flexcan2>;
+	xceiver-supply =3D <&reg_can_stby>;
+	status =3D "okay";
+};
+
 &i2c3 {
 	clock-frequency =3D <100000>;
 	pinctrl-names =3D "default";
@@ -397,6 +425,20 @@
 			>;
 		};
=20
+		pinctrl_flexcan1: flexcan1grp {
+			fsl,pins =3D <
+				MX6SX_PAD_QSPI1B_DQS__CAN1_TX		0x1b020
+				MX6SX_PAD_QSPI1A_SS1_B__CAN1_RX		0x1b020
+			>;
+		};
+
+		pinctrl_flexcan2: flexcan2grp {
+			fsl,pins =3D <
+				MX6SX_PAD_QSPI1B_SS1_B__CAN2_RX		0x1b020
+				MX6SX_PAD_QSPI1A_DQS__CAN2_TX		0x1b020
+			>;
+		};
+
 		pinctrl_gpio_keys: gpio_keysgrp {
 			fsl,pins =3D <
 				MX6SX_PAD_CSI_DATA04__GPIO1_IO_18 0x17059
--=20
2.17.1