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ARM: dts: imx6sx-sabreauto: add flexcan support 

The CAN transceiver on MX6SX Sabreauto board seems in sleep mode by default
after power up the board. User has to press the wakeup key on ARD baseboard
before using the transceiver, or it may not work properly when power up the
board at the first time(warm reset does not have such issue).

This patch operates the wake pin too besides stby/en pins by chaining them
together in regulator mode.

Signed-off-by: Aisheng Dong <aisheng.dong@nxp.com>
Signed-off-by: Joakim Zhang <qiangqing.zhang@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
This commit is contained in:
Aisheng Dong 2018-11-28 11:03:52 +00:00 committed by Shawn Guo
parent 88dddae62e
commit 57ab56fa0b
1 changed files with 57 additions and 0 deletions
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57
arch/arm/boot/dts/imx6sx-sabreauto.dts
View File

@ -37,6 +37,35 @@
gpio = <&gpio2 11 GPIO_ACTIVE_HIGH>;
enable-active-high;
};
reg_can_wake: regulator-can-wake {
compatible = "regulator-fixed";
regulator-name = "can-wake";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
gpio = <&max7310_b 7 GPIO_ACTIVE_HIGH>;
enable-active-high;
};
reg_can_en: regulator-can-en {
compatible = "regulator-fixed";
regulator-name = "can-en";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
gpio = <&max7310_b 5 GPIO_ACTIVE_HIGH>;
enable-active-high;
vin-supply = <&reg_can_wake>;
};
reg_can_stby: regulator-can-stby {
compatible = "regulator-fixed";
regulator-name = "can-stby";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
gpio = <&max7310_b 4 GPIO_ACTIVE_HIGH>;
enable-active-high;
vin-supply = <&reg_can_en>;
};
};
&anaclk2 {
@ -76,6 +105,20 @@
status = "okay";
};
&flexcan1 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_flexcan1>;
xceiver-supply = <&reg_can_stby>;
status = "okay";
};
&flexcan2 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_flexcan2>;
xceiver-supply = <&reg_can_stby>;
status = "okay";
};
&uart1 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_uart1>;
@ -150,6 +193,20 @@
>;
};
pinctrl_flexcan1: flexcan1grp {
fsl,pins = <
MX6SX_PAD_QSPI1B_DQS__CAN1_TX 0x1b020
MX6SX_PAD_QSPI1A_SS1_B__CAN1_RX 0x1b020
>;
};
pinctrl_flexcan2: flexcan2grp {
fsl,pins = <
MX6SX_PAD_QSPI1B_SS1_B__CAN2_RX 0x1b020
MX6SX_PAD_QSPI1A_DQS__CAN2_TX 0x1b020
>;
};
pinctrl_i2c2: i2c2grp {
fsl,pins = <
MX6SX_PAD_GPIO1_IO03__I2C2_SDA 0x4001b8b1