@Vincent, thank you for the answer. Are there any plans to add the CAN XL driver and the netlink interface for CAN XL? I use the DCAN XL implemented in FPGA. I work for Digital Core Design and it's one of our latest IP cores. I know the CAN-XL controller is a rare product for now. Best regards, Robert Nawrath On Fri, Nov 1, 2024 at 3:27 PM Vincent Mailhol <mailhol.vincent@xxxxxxxxxx> wrote: > > +cc: Oliver > > On Thu. 31 Oct. 2024 at 20:55, Robert Nawrath <mbro1689@xxxxxxxxx> wrote: > > Hi, > > I'm working on a kernel module for CAN-XL device. I can see in > > /linux/can/dev.h that there are structures and methods for setting > > bittiming and data_bittiming. The bittiming refers to CAN nominal bit > > time, data_bittiming refers to CAN data bit time (using ISO/FDIS > > 11898-1:2024 nomenclature). But in CAN-XL the data bit rate has two > > values: FD data bit rate and XL data bit rate. This values are > > different and the device shall have separate configuration register > > sets for them. So for separate configuration registers there shall be > > separate methods and structs. > > Am I right that the current implementation in kernel is incomplete? Or > > am I missing something? > > Yes, you are right. There is not yet a netlink interface for CAN XL, > mostly because there is not yet a CAN XL driver in linux-can and > because, before you, no one manifested a need for this. > > @Oliver, in this message: > > https://lore.kernel.org/linux-can/2540406e-8da3-4cb8-bd1a-30271dd6cc67@xxxxxxxxxxxx/ > > you mentioned that you were working on the bitrate configuration. Any > update? Seems that this is time to make this live! I did some work on > the netlink and the iproute2 tool in the past when I added the TDC, so > eventually, I can help a bit if needed. > > @Robert, out of curiosity, what is the name of your CAN XL device? > > > Yours sincerely, > Vincent Mailhol > > Le jeu. 31 oct. 2024 à 20:55, Robert Nawrath <mbro1689@xxxxxxxxx> a écrit : > > > > Hi, > > I'm working on a kernel module for CAN-XL device. I can see in > > /linux/can/dev.h that there are structures and methods for setting > > bittiming and data_bittiming. The bittiming refers to CAN nominal bit > > time, data_bittiming refers to CAN data bit time (using ISO/FDIS > > 11898-1:2024 nomenclature). But in CAN-XL the data bit rate has two > > values: FD data bit rate and XL data bit rate. This values are > > different and the device shall have separate configuration register > > sets for them. So for separate configuration registers there shall be > > separate methods and structs. > > Am I right that the current implementation in kernel is incomplete? Or > > am I missing something? > > Robert > >
