[PATCH 2/2] arm64: dts: freescale: Add phyBOARD-Segin-i.MX91 support

[Marc Kleine-Budde]

On 21.10.2025 12:07:13, Primoz Fiser wrote:
> >> +	flexcan1_tc: can-phy0 {
> >> +		compatible = "ti,tcan1043";
> >> +		#phy-cells = <0>;
> >> +		max-bitrate = <1000000>;
> >> +		pinctrl-names = "default";
> >> +		pinctrl-0 = <&pinctrl_flexcan1_tc>;
> >> +		enable-gpios = <&gpio4 16 GPIO_ACTIVE_HIGH>;
> >> +	};
> > 
> > I think the tcan1043 is a CAN-FD transceiver. According to the datasheet
> > it support 2 MBit/s and 5 MBit/s in the "G" variant. However due to the
> > board layout, etc, the actual bit rate might still be limited to 1
> > MBit/s. Ask the HW engineers if in doubt.
> 
> phyBOARD-Segin actually uses a TI SN65HVD234D CAN transceiver chip which
> supports up to 1MBps. See [1].
> 
> However since there is no direct support for SN65HVD234D we model the
> enable signal with the generic PHY driver and use "ti,tcan1043" jsut as
> compatible. Suggested by Frank and you in [2].

hmmm, okay - I suggest to add a comment that mentions the actual
transceiver and that it's a 1 MBit/s CAN-CC transceiver.

regards,
Marc

-- 
Pengutronix e.K.                 | Marc Kleine-Budde          |
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