CAN com issue.

[kasunvj]

------- CAN0 (as reading from userspace) is connected to can1 in evb ; this is a working no issue log----------------------------------
root@linaro-alip:# sudo ip link set can0 down
root@linaro-alip:# sudo ip link set can0 type can bitrate 500000[ 353.196969] [dhd][wlan0] wl_run_escan : LEGACY_SCAN sync ID: 8, bssidx: 0
root@linaro-alip:~# sudo ip link set can0 up
[ 363.276312] [dhd] CFG80211-ERROR) wl_cfg80211_netdev_notifier_call : wdev null. Do nothing
[ 363.277339] IPv6: ADDRCONF(NETDEV_UP): can0: link is not ready
[ 363.277397] [dhd] CFG80211-ERROR) wl_cfg80211_netdev_notifier_call : wdev null. Do nothing
[ 363.277485] IPv6: ADDRCONF(NETDEV_CHANGE): can0: link becomes ready
[ 363.277502] [dhd] CFG80211-ERROR) wl_cfg80211_netdev_notifier_call : wdev null. Do nothing

root@linaro-alip:~# sudo ip -details link show can0
2: can0: <NOARP,UP,LOWER_UP,ECHO> mtu 16 qdisc pfifo_fast state UP mode DEFAULT group default qlen 10
link/can promiscuity 0 minmtu 0 maxmtu 0
can state ERROR-ACTIVE (berr-counter tx 0 rx 0) restart-ms 0
bitrate 125000 sample-point 0.772
tq 363 prop-seg 8 phase-seg1 8 phase-seg2 5 sjw 1
rockchip_can: tseg1 1..16 tseg2 1..8 sjw 1..4 brp 1..128 brp-inc 2
clock 297000000numtxqueues 1 numrxqueues 1 gso_max_size 65536 gso_max_segs 65535

can0: flags=193<UP,RUNNING,NOARP> mtu 16
unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 txqueuelen 10 (UNSPEC)
RX packets 1758 bytes 14064 (13.7 KiB)
RX errors 60 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
device interrupt 63

--- issue---

root@linaro-alip:# sudo ip link set can0 down
root@linaro-alip:# sudo ip link set can0 type can bitrate 125000
root@linaro-alip:~# sudo ip link set can0 up
[ 4319.582868] rockchip_canfd fe580000.can can0: incorrect/missing data bit-timing

root@linaro-alip:# sudo ip link set can0 down
root@linaro-alip:# sudo ip link set can0 type can bitrate 500000
[ 4524.860242] rockchip_canfd fe580000.can can0: bitrate error 0.3%
root@linaro-alip:~# sudo ip link set can0 up
[ 4529.717675] rockchip_canfd fe580000.can can0: incorrect/missing data bit-timing

2: can0: <NOARP,UP,LOWER_UP,ECHO> mtu 16 qdisc pfifo_fast state UP mode DEFAULT group default qlen 10
link/can promiscuity 0 minmtu 0 maxmtu 0
can state ERROR-ACTIVE (berr-counter tx 0 rx 0) restart-ms 0
bitrate 500000 sample-point 0.818
tq 181 prop-seg 4 phase-seg1 4 phase-seg2 2 sjw 1
rockchip_can: tseg1 1..16 tseg2 1..8 sjw 1..4 brp 1..128 brp-inc 2
clock 297000000numtxqueues 1 numrxqueues 1 gso_max_size 65536 gso_max_segs 65535

[kasunvj]

can0: can@fe570000 {
compatible = "rockchip,canfd-1.0";
reg = <0x0 0xfe570000 0x0 0x1000>;
interrupts = <GIC_SPI 1 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&cru CLK_CAN0>, <&cru PCLK_CAN0>;
clock-names = "baudclk", "apb_pclk";
resets = <&cru SRST_CAN0>, <&cru SRST_P_CAN0>;
reset-names = "can", "can-apb";
tx-fifo-depth = <1>;
rx-fifo-depth = <6>;
status = "disabled";
};

can1: can@fe580000 {
	compatible = "rockchip,canfd-1.0";❌️
	compatible = "rockchip,can-1.0";✅️
	reg = <0x0 0xfe580000 0x0 0x1000>;
	interrupts = <GIC_SPI 2 IRQ_TYPE_LEVEL_HIGH>;
	clocks = <&cru CLK_CAN1>, <&cru PCLK_CAN1>;
	clock-names = "baudclk", "apb_pclk";
	resets = <&cru SRST_CAN1>, <&cru SRST_P_CAN1>;
	reset-names = "can", "can-apb";
	tx-fifo-depth = <1>;
	rx-fifo-depth = <6>;
	status = "disabled";
};

can2: can@fe590000 {
	compatible = "rockchip,canfd-1.0";
	reg = <0x0 0xfe590000 0x0 0x1000>;
	interrupts = <GIC_SPI 3 IRQ_TYPE_LEVEL_HIGH>;
	clocks = <&cru CLK_CAN2>, <&cru PCLK_CAN2>;
	clock-names = "baudclk", "apb_pclk";
	resets = <&cru SRST_CAN2>, <&cru SRST_P_CAN2>;
	reset-names = "can", "can-apb";
	tx-fifo-depth = <1>;
	rx-fifo-depth = <6>;
	status = "disabled";
}; what is canfd-1.0 and can-1.0