Commit fb999a5f authored by Marc Kleine-Budde's avatar Marc Kleine-Budde
Browse files

can: rockchip_canfd: add notes about known issues 



Even the rk3568v3 has some known issues. Document them together with a
reproducer.

Tested-by: default avatarAlibek Omarov <a1ba.omarov@gmail.com>
Acked-by: default avatarHeiko Stuebner <heiko@sntech.de>
Link: https://patch.msgid.link/20240904-rockchip-canfd-v5-8-8ae22bcb27cc@pengutronix.de


Signed-off-by: default avatarMarc Kleine-Budde <mkl@pengutronix.de>
parent c158f22f

drivers/net/can/rockchip/rockchip_canfd.h

+20 −0
Original line number Diff line number Diff line
@@ -370,6 +370,26 @@ 
 */

#define RKCANFD_QUIRK_CANFD_BROKEN BIT(12)



/* known issues with rk3568v3:

 *

 * - Overload situation during high bus load

 *   To reproduce:

 *   host:

 *     # add a 2nd CAN adapter to the CAN bus

 *     cangen can0 -I 1 -Li -Di -p10 -g 0.3

 *     cansequence -rve

 *   DUT:

 *     cangen can0 -I2 -L1 -Di -p10 -c10 -g 1 -e

 *     cansequence -rv -i 1

 *

 * - TX starvation after repeated Bus-Off

 *   To reproduce:

 *   host:

 *     sleep 3 && cangen can0 -I2 -Li -Di -p10 -g 0.0

 *   DUT:

 *     cangen can0 -I2 -Li -Di -p10 -g 0.05

 */



enum rkcanfd_model {

	RKCANFD_MODEL_RK3568V2 = 0x35682,

	RKCANFD_MODEL_RK3568V3 = 0x35683,