The GW53xx has a transceiver with a STBY pin connected to an IMX6 GPIO. Configure this as a regulator to drive it low when CAN is in use. Signed-off-by: Tim Harvey <tharvey@xxxxxxxxxxxxx> --- v2: - move compatible to start of child node - fix typo in commit log --- arch/arm/boot/dts/imx6qdl-gw53xx.dtsi | 18 +++++++++++++++++- 1 file changed, 17 insertions(+), 1 deletion(-) diff --git a/arch/arm/boot/dts/imx6qdl-gw53xx.dtsi b/arch/arm/boot/dts/imx6qdl-gw53xx.dtsi index a0710d562766..6c0c109046d8 100644 --- a/arch/arm/boot/dts/imx6qdl-gw53xx.dtsi +++ b/arch/arm/boot/dts/imx6qdl-gw53xx.dtsi @@ -129,6 +129,16 @@ reg_3p3v: regulator-3p3v { regulator-always-on; }; + reg_can1_stby: regulator-can1-stby { + compatible = "regulator-fixed"; + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_reg_can1>; + regulator-name = "can1_stby"; + gpio = <&gpio1 2 GPIO_ACTIVE_LOW>; + regulator-min-microvolt = <3300000>; + regulator-max-microvolt = <3300000>; + }; + reg_usb_h1_vbus: regulator-usb-h1-vbus { compatible = "regulator-fixed"; regulator-name = "usb_h1_vbus"; @@ -170,6 +180,7 @@ &audmux { &can1 { pinctrl-names = "default"; pinctrl-0 = <&pinctrl_flexcan1>; + xceiver-supply = <®_can1_stby>; status = "okay"; }; @@ -600,7 +611,6 @@ pinctrl_flexcan1: flexcan1grp { fsl,pins = < MX6QDL_PAD_KEY_ROW2__FLEXCAN1_RX 0x1b0b1 MX6QDL_PAD_KEY_COL2__FLEXCAN1_TX 0x1b0b1 - MX6QDL_PAD_GPIO_2__GPIO1_IO02 0x4001b0b0 /* CAN_STBY */ >; }; @@ -691,6 +701,12 @@ MX6QDL_PAD_SD1_CMD__PWM4_OUT 0x1b0b1 >; }; + pinctrl_reg_can1: regcan1grp { + fsl,pins = < + MX6QDL_PAD_GPIO_2__GPIO1_IO02 0x4001b0b0 /* CAN_STBY */ + >; + }; + pinctrl_uart1: uart1grp { fsl,pins = < MX6QDL_PAD_SD3_DAT7__UART1_TX_DATA 0x1b0b1 -- 2.25.1