rk3576 can is a new controller,new register layout and Bit position
definition:
Support CAN and CANFD protocol.
Support Dma.

There are major differences from the previous rk3568.
All errata on the rk3568 have been fixed and redesigned.

Change in V6:
[PATCH v6 1/4]: Fix dma is support only for rk3576.
[PATCH v6 2/4]: Fix the compilation warning.
[PATCH v6 3/4]: Fix the compilation warning.
[PATCH v6 4/4]: Fix the compilation warning.

Change in V5:
[PATCH v5 1/4]: Add rk3576 canfd to rockchip,rk3568v2-canfd.yaml, remove
                rockchip,rk3576-canfd.yaml
[PATCH v5 2/4]: Encapsulate some hardware operation functions into
                rkcanfd_devtype_data to provide differentiated
                implementations for different models
                (such as RK3568v2/v3)..
[PATCH v5 3/4]: Add rk3576 canfd,fix the register naming rule,
                Delete the variables used by rockchip itself.
[PATCH v5 4/4]: Fix .h sorting.


Change in V4:
[PATCH v4 1/3]: Correct the format and add explanations.
[PATCH v4 2/3]: No change.
[PATCH v4 3/3]: No change.

Change in V3:
[PATCH v3 1/3]: Add documentation for the rk3576 CAN-FD.
[PATCH v3 2/3]: Adjust the differentiated code section and
                add dma function.
[PATCH v3 3/3]: Remove dma, no use dma by default.

Change in V2:
[PATCH v2 1/2]: remove rk3576_canfd.c, use the rockchip_canfd driver
[PATCH v2 2/2]: code style.

Elaine Zhang (4):
  dt-bindings: can: rockchip_canfd: add rk3576 CAN-FD controller
  net: can: rockchip: Refactor the rkcanfd_devtype_data structure
  net: can: rockchip: add can for RK3576 Soc
  net: can: rockchip: support dma for rk3576 rx

 .../net/can/rockchip,rk3568v2-canfd.yaml      |  41 ++
 .../net/can/rockchip/rockchip_canfd-core.c    | 596 ++++++++++++++++--
 drivers/net/can/rockchip/rockchip_canfd-rx.c  | 198 ++++++
 drivers/net/can/rockchip/rockchip_canfd-tx.c  |  27 +
 drivers/net/can/rockchip/rockchip_canfd.h     | 289 +++++++++
 5 files changed, 1108 insertions(+), 43 deletions(-)

-- 
2.34.1

On 26.05.2025 14:25:55, Elaine Zhang wrote:
> rk3576 can is a new controller,new register layout and Bit position
> definition:
> Support CAN and CANFD protocol.
> Support Dma.
> 
> There are major differences from the previous rk3568.
> All errata on the rk3568 have been fixed and redesigned.

Can you configure the IP core for CAN-2.0 a.k.a. CAN-CC only mode, so
that it only receives CAN-CC frames only and not CAN-FD?

What happens if you configure register RKCAN_STR_CTL, ism_sel to 2'b01:
CAN Fixed and receive a CAN-FD frame?

Is there a more detailed description to "2'b00: Flexible; cover_mode
must disable" and "2'b11: Mixed. cover_mode must disable"?

regards,
Marc

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