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report=arf CFBL-Feedback-ID: 1vg8O7-00000001uzw-3tqy-feedback@antispam.mailspamprotection.com Authentication-Results: outgoing.instance-europe-west4-0c7t.prod.antispam.mailspamprotection.com; iprev=pass (214.173.214.35.bc.googleusercontent.com) smtp.remote-ip=35.214.173.214; auth=pass (LOGIN) smtp.auth=esm19.siteground.biz; dkim=pass header.d=valla.it header.s=default header.a=rsa-sha256; arc=none Hello linux-can, I am starting to develop a driver for the TJA1465 SIC CAN transceiver from NXP [0], which among other things supports partial networking, and I was wondering whether it has already been discussed or not how to support such a feature. For those not familiar, partial networking is an automotive-oriented feature that allows to wake-up selectively through CAN traffic some ECUs while leaving others in a quiescent state. This can be used for example for periodic maintenance tasks, diagnostics or updates. It is typically implemented inside a trasceiver, which is always powered and stores in a volatile memory a list of CAN IDs (plus masks, much like the SocketCAN filtering works) that shall lead to the wake-up of the ECU. In the context of the Linux kernel, this can be probably be implemented in a number of ways: - as a device-specifc capability (accessible e.g. through sysfs) - at phy level - in the generic CAN subsystem - ? I did not find a previous discussion neither in the mailing list nor in public presentations, but maybe some discussion already took place privately or I missed something. Any idea or preference? If not, I'll try to come up with a proposal and submit an RFC. [0] https://www.nxp.com/products/TJA1465 Thank you in advance! Regards, Francesco