On 27.04.2023 22:45:40, Dario Binacchi wrote: > Add support for bxcan (Basic eXtended CAN controller) to STM32F746. The > chip contains three CAN peripherals, CAN1 and CAN2 in dual peripheral > configuration and CAN3 in single peripheral configuration: > - Dual CAN peripheral configuration: > * CAN1: Primary bxCAN for managing the communication between a secondary > bxCAN and the 512-byte SRAM memory. > * CAN2: Secondary bxCAN with no direct access to the SRAM memory. > This means that the two bxCAN cells share the 512-byte SRAM memory and > CAN2 can't be used without enabling CAN1. > - Single CAN peripheral configuration: > * CAN3: Primary bxCAN with dedicated Memory Access Controller unit and > 512-byte SRAM memory. > > ------------------------------------------------------------------------- > | features | CAN1 | CAN2 | CAN 3 | > ------------------------------------------------------------------------- > | SRAM | 512-byte shared between CAN1 & CAN2 | 512-byte | > ------------------------------------------------------------------------- > | Filters | 26 filters shared between CAN1 & CAN2 | 14 filters | > ------------------------------------------------------------------------- > > Signed-off-by: Dario Binacchi I initially upstreamed this patch as 0920ccdf41e3 ("ARM: dts: stm32: add CAN support on stm32f746"), but it depends on "dt-bindings: mfd: stm32f7: add binding definition for CAN3" [1], which is missing in net/main, resulting in parsing errors in the "stm32f746.dtsi". This patch is reverted by [2], so please upstream it via the platform maintainers. regards, Marc [1] https://lore.kernel.org/all/20230423172528.1398158-2-dario.binacchi@amarulasolutions.com [2] https://lore.kernel.org/all/20230517181950.1106697-1-mkl@pengutronix.de -- 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 |