[PATCH can-next v2 08/20] can: rockchip_canfd: add notes about known issues
From: Marc Kleine-Budde <mkl@pengutronix.de>
Date: 2024-07-31 09:38:07
Also in:
linux-arm-kernel, linux-can, linux-devicetree, linux-rockchip, lkml
Subsystem:
arm/rockchip soc support, can network drivers, rockchip can-fd driver, the rest · Maintainers:
Heiko Stuebner, Marc Kleine-Budde, Vincent Mailhol, Linus Torvalds
Even the rk3568v3 has some known issues. Document them together with a reproducer. Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de> --- drivers/net/can/rockchip/rockchip_canfd.h | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+)
diff --git a/drivers/net/can/rockchip/rockchip_canfd.h b/drivers/net/can/rockchip/rockchip_canfd.h
index 9b446331fbd0..3dafb5e68dc5 100644
--- a/drivers/net/can/rockchip/rockchip_canfd.h
+++ b/drivers/net/can/rockchip/rockchip_canfd.h@@ -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,
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2.43.0