On 07.06.2024 12:52:08, Martin Hundebøll wrote: > The m_can driver sets and clears the CCCR.INIT bit during probe (both > when testing the NON-ISO bit, and when configuring the chip). After > clearing the CCCR.INIT bit, the transceiver enters normal mode, where it > affects the CAN bus (i.e. it ACKs frames). This can cause troubles when > the m_can node is only used for monitoring the bus, as one cannot setup > listen-only mode before the device is probed. > > Rework the probe flow, so that the CCCR.INIT bit is only cleared when > upping the device. First, the tcan4x5x driver is changed to stay in > standby mode during/after probe. This in turn requires changes when > setting bits in the CCCR register, as its CSR and CSA bits are always > high in standby mode. > > Signed-off-by: Martin Hundebøll <martin@xxxxxxxxxx> Applied to linux-can-next. Thanks, Marc -- Pengutronix e.K. | Marc Kleine-Budde | Embedded Linux | https://www.pengutronix.de | Vertretung Nürnberg | Phone: +49-5121-206917-129 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-9 |
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