On 10/23/20 1:45 PM, Russell King - ARM Linux admin wrote: > On Fri, Oct 23, 2020 at 12:56:20PM +0200, Oleksij Rempel wrote: >> - The upcoming CAN SIC and CAN SIC XL PHYs use a different interface to >> the CAN controller. This means the controller needs to know which type >> of PHY is attached to configure the interface in the correct mode. Use >> PHY link for that, too. > > Is this dynamic in some form? There isn't any CAN SIC transceivers out there yet. I suspect there will be no auto detection possible, so we would describe the type of the attached transceiver via device tree. In the future I can think of some devices that have a MUX and use the a classic transceiver (CAN high-speed) for legacy deployments and CAN SIC transceivers if connected to a "modern" CAN bus. Someone (i.e. the user or the system integrator) has to configure the MUX to select the correct transceiver. Marc -- Pengutronix e.K. | Marc Kleine-Budde | Embedded Linux | https://www.pengutronix.de | Vertretung West/Dortmund | Phone: +49-231-2826-924 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
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