Zynq+linux+ramdisk can commissioning

Due to the use of the RAMDisk file system, the IP tool version is too old to configure can, you need to self-compile IP, see reference 2

1.vivado Configuration PS

2. The device tree adds Can0, and the General Development Board has provided this configuration

[Email protected]  {compatible = "xlnx,zynq-can-1.0"; status = "Okay"; clocks = <0x1 0x13 0x1 0x24>;clock-names = "Can_clk", "PCLK"; reg = <0xe0008000 0x1000>;interrupts = <0x0 0x1c 0x4>;interrupt-parent = <0x3>;tx-fifo-depth = <0x40> ; rx-fifo-depth = <0x40>;};

3.kernel configuration, generally well-equipped, see reference 1

4. Testing

#ifconfig-acan0 Link encap:unspec HWaddrxx-xx-xx-xx-xx-xx-xx-xx-xx-xx-xx-xx-xx-xx-xx-xxnoarp MTU: -Metric:1RX Packets:0Errors0Dropped0Overruns:0Frame0TX Packets:0Errors0Dropped0Overruns:0Carrier0Collisions:0Txqueuelen:TenRX Bytes:0(0.0B) TX Bytes:0(0.0B) Interrupt: Aeth0 Link encap:ethernet HWaddrxx: 0A: *:xx: on: Ainet Addr:192.168.0.120Bcast:192.168.0.255Mask:255.255.255.0Up broadcast RUNNING multicast MTU: theMetric:1RX Packets:397Errors0Dropped0Overruns:0Frame0TX Packets:242Errors0Dropped0Overruns:0Carrier0Collisions:0Txqueuelen: +RX Bytes:476490(465.3KiB) TX Bytes:18536(18.1KiB) Interrupt:148Base Address:0xb000lo Link encap:local Loopback Loopback MTU:65536Metric:1RX Packets:0Errors0Dropped0Overruns:0Frame0TX Packets:0Errors0Dropped0Overruns:0Carrier0Collisions:0Txqueuelen:0RX Bytes:0(0.0B) TX Bytes:0(0.0B

Set the baud rate of the can0, which is set at 100k
#./ip link Set Can0 type can bitrate100000
Enable Can0
#./ip Link Set can0 up
Display Can0 status information
#./ip-d-S Link show can0

z-turn#./IP Link set can0 type can bitrate100000xilinx_can e0008000.can can0:bitrate error0.0%Z-turn#./IP link Set can0 upZ-turn#./ip-d-s link show can02: Can0: <NOARP,UP,LOWER_UP,ECHO> MTU -Qdisc pfifo_fast State UNKNOWN mode default group default QlenTenLink/can promiscuity0can state ERROR-active (Berr-counter TX0Rx0) Restart-ms0bitrate99999Sample-point0.750TQ2500Prop-seg1Phase-seg11Phase-seg21Sjw1XILINX_CAN:TSEG11.. -Tseg21..8Sjw1..4Brp1.. theBrp-inc1Clock99999999Re-started bus-errors arbit-lost Error-warn error-pass bus-off0          0          0          0          0          0Numtxqueues1Numrxqueues1rx:bytes packets Errors dropped overrun Mcast0          0        0       0       0       0tx:bytes packets errors dropped carrier Collsns0          0        0       0       0       0

Not to be continued ...

Reference documents:

1.http://xilinx.eetrend.com/blog/12062

2.http://www.cnblogs.com/hujianhua/p/8446291.html

Zynq+linux+ramdisk can commissioning