Re: [PATCH net 1/4] can: m_can: pci: fix incorrect reference clock rate

[Jarkko Nikula]

On 11/16/21 9:15 AM, Marc Kleine-Budde wrote:
> On 16.11.2021 09:11:40, Jarkko Nikula wrote:
> > > ip link set can0 type can bitrate 1000000 dbitrate 2000000 fd on
> >
> > I got confirmation the clock to CAN controller is indeed changed from 100
> > MHz to 200 MHz in release HW & firmware.
> >
> > I haven't upgraded the FW in a while on our HW so that perhaps explain
> > why I was seeing expected rate :-)
>
> Can we query the FW version in the driver and set the clock rate
> accordingly?
Perhaps or check some clock register. I guess for now it can be 
considered fixed clock since I understood rate was changed before 
released to customers. I.e. customers shouldn't have firmware with 
different rates. At least I hope so :-)

Jarkko