Re: [PATCH 10/13] arm64: dts: freescale: imx93-phyboard-segin: Add CAN support

Primoz Fiser
2025-04-11T08:08:23Z

Hi Frank,

On 10. 04. 25 17:23, Frank Li wrote:
> On Thu, Apr 10, 2025 at 11:02:48AM +0200, Primoz Fiser wrote:
>> Add support for CAN networking on phyBOARD-Segin-i.MX93 via the flexcan1
>> interface. The CAN1_EN regulator enables the SN65HVD234 CAN transceiver
>> chip.
>
> Can you use drivers/phy/phy-can-transceiver.c to enable CAN phy instead
> of use hacked regulator-flexcan1-en.

Sorry can't do.

This doesn't align with other i.MX PHYTEC products using flexcan such as
imx8mp-phyboard-pollux-rdk.dts.

Even the i.MX93 EVK uses the same mechanism.

BR,
Primoz

>
> Frank
>
>>
>> Signed-off-by: Primoz Fiser <primoz.fiser@norik.com>
>> ---
>> .../dts/freescale/imx93-phyboard-segin.dts | 32 +++++++++++++++++++
>> 1 file changed, 32 insertions(+)
>>
>> diff --git a/arch/arm64/boot/dts/freescale/imx93-phyboard-segin.dts b/arch/arm64/boot/dts/freescale/imx93-phyboard-segin.dts
>> index 38b89398e646..027a34dbaf04 100644
>> --- a/arch/arm64/boot/dts/freescale/imx93-phyboard-segin.dts
>> +++ b/arch/arm64/boot/dts/freescale/imx93-phyboard-segin.dts
>> @@ -26,6 +26,17 @@ chosen {
>> stdout-path = &lpuart1;
>> };
>>
>> + reg_flexcan1_en: regulator-flexcan1-en {
>> + compatible = "regulator-fixed";
>> + enable-active-high;
>> + gpio = <&gpio4 16 GPIO_ACTIVE_HIGH>;
>> + pinctrl-names = "default";
>> + pinctrl-0 = <&pinctrl_reg_flexcan1_en>;
>> + regulator-max-microvolt = <3300000>;
>> + regulator-min-microvolt = <3300000>;
>> + regulator-name = "CAN1_EN";
>> + };
>> +
>> reg_usdhc2_vmmc: regulator-usdhc2 {
>> compatible = "regulator-fixed";
>> enable-active-high;
>> @@ -38,6 +49,14 @@ reg_usdhc2_vmmc: regulator-usdhc2 {
>> };
>> };
>>
>> +/* CAN */
>> +&flexcan1 {
>> + pinctrl-names = "default";
>> + pinctrl-0 = <&pinctrl_flexcan1>;
>> + xceiver-supply = <&reg_flexcan1_en>;
>> + status = "okay";
>> +};
>> +
>> /* I2C2 */
>> &lpi2c2 {
>> clock-frequency = <400000>;
>> @@ -79,6 +98,19 @@ &usdhc2 {
>> };
>>
>> &iomuxc {
>> + pinctrl_flexcan1: flexcan1grp {
>> + fsl,pins = <
>> + MX93_PAD_PDM_BIT_STREAM0__CAN1_RX 0x139e
>> + MX93_PAD_PDM_CLK__CAN1_TX 0x139e
>> + >;
>> + };
>> +
>> + pinctrl_reg_flexcan1_en: regflexcan1engrp {
>> + fsl,pins = <
>> + MX93_PAD_ENET2_TD3__GPIO4_IO16 0x31e
>> + >;
>> + };
>> +
>> pinctrl_lpi2c2: lpi2c2grp {
>> fsl,pins = <
>> MX93_PAD_I2C2_SCL__LPI2C2_SCL 0x40000b9e
>> --
>> 2.34.1
>>

--
Primoz Fiser
phone: +386-41-390-545
email: primoz.fiser@norik.com
--
Norik systems d.o.o.
Your embedded software partner
Slovenia, EU
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