Thanks for reply. Good for you ,but I still can't make dcan1 work using am57xx-beagle-x15-revc.dtb.And what's more ,I even meet a problem that pin (dcan_tx) cannot be control by cpu,no matter in what pin mode (really really annoying ,and I try another bb_X15 board.Then it worked normally .I try that pin is broken ). Now intead ,I am using dcan2 ,and it work perfectly ,referring to https://e2e.ti.com/support/processors/f/791/p/739907/2743480#2743480.
在 2018年10月25日星期四 UTC+8上午2:13:01，[email protected]写道： > > Within the past week I tried to open DCAN. Now it work. > I can send and receive package through DCAN. > > 1. I follow cross-compiler kernel this link > https://www.digikey.com/eewiki/display/linuxonarm/BeagleBoard-X15 > > 2. After step download kernel I edit file *am57xx-beagle-x15-common.dtsi* by > reference from *am57xx-idk-common.dtsi* > > &dra7_pmx_core { > dcan1_pins_default: dcan1_pins_default { > pinctrl-single,pins = < > DRA7XX_CORE_IOPAD(0x37d0, PIN_OUTPUT_PULLUP | > MUX_MODE0) /* dcan1_tx */ > DRA7XX_CORE_IOPAD(0x37d4, PIN_INPUT_PULLUP | > MUX_MODE0) /* dcan1_rx */ > >; > }; > > dcan1_pins_sleep: dcan1_pins_sleep { > pinctrl-single,pins = < > DRA7XX_CORE_IOPAD(0x37d0, MUX_MODE15 | > PULL_UP) /* dcan1_tx.off */ > DRA7XX_CORE_IOPAD(0x37d4, MUX_MODE15 | > PULL_UP) /* dcan1_rx.off */ > >; > }; > }; > > &dcan1 { > status = "okay"; > pinctrl-names = "default", "sleep", "active"; > pinctrl-0 = <&dcan1_pins_sleep>; > pinctrl-1 = <&dcan1_pins_sleep>; > pinctrl-2 = <&dcan1_pins_default>; > }; > 3. After login debian I open dcan with command : *ip link set can0 type > can; ifconfig can0 up;* > > you can see my forum talked with TI engineer > > > https://e2e.ti.com/support/processors/f/791/t/732131?tisearch=e2e-quicksearch&keymatch=beagleboard#pi320627=1 > > Thank > > เมื่อ วันพุธที่ 24 ตุลาคม ค.ศ. 2018 16 นาฬิกา 43 นาที 09 วินาที UTC+7, > ezio H เขียนว่า: >> >> >> Hello ,Thanks for reply. >> en...Good news is that DCAN can work in loopback mode ! >> Bad news is still that DCAN can't use in nomal mode .I keep consulting >> the TI engineer. >> referring to >> https://e2e.ti.com/support/processors/f/791/p/739907/2731843#2731843 >> <https://www.google.com/url?q=https%3A%2F%2Fe2e.ti.com%2Fsupport%2Fprocessors%2Ff%2F791%2Fp%2F739907%2F2731843%232731843&sa=D&sntz=1&usg=AFQjCNGpwDxTRoks5bwcRhFLswkEFJyimA> >> >> 在 2018年10月11日星期四 UTC+8下午7:53:59，[email protected]写道： >>> >>> Hi, >>> Now can you use dcan on bb-x15? >>> If yes, please advise me how do open it >>> I see this link >>> https://e2e.ti.com/support/processors/f/791/p/715990/2645332#pi239031349=1 >>> but it cannot use >>> >>> เมื่อ วันอังคารที่ 14 สิงหาคม ค.ศ. 2018 14 นาฬิกา 27 นาที 31 วินาที >>> UTC+7, ezio H เขียนว่า: >>>> >>>> Link on ti e2e: >>>> https://e2e.ti.com/support/arm/sitara_arm/f/791/t/710355. >>>> bb_x15 's DCAM1 don't work on either >>>> *ubuntu-16.04.3-minimal-armhf-2017-10-10 >>>> * or TI's Arogo >>>> On Arogo,I use: >>>> >>>> root@am57xx-evm:~# canconfig can0 bitrate 50000 ctrlmode triple-samplin >>>> [ 757.361582] omap_hwmod: dcan1: _wait_target_disable failed >>>> can0 bitrate: 50000, sample-point: 0.875 >>>> [ 757.376837] omap_hwmod: dcan1: _wait_target_disable failed >>>> can0 ctrlmode: loopback[OFF], listen-only[OFF], >>>> tripple-sampling[ON],one-shot[OFF], berr-reporting[OFF] >>>> root@am57xx-evm:~# ifconfig can0 up >>>> >>>> >>>> And everything about CAN looks good >>>> >>>> root@am57xx-evm:~# lsmod | grep can >>>> can_raw 6589 2 >>>> >>>> can 29904 1 can_raw >>>> >>>> c_can_platform 6638 0 >>>> c_can 9718 1 c_can_platform >>>> can_dev 12397 1 c_can >>>> >>>> root@am57xx-evm:~# cat /proc/device-tree/ocp/can\@481cc000/status >>>> okay >>>> >>>> >>>> >>>> >>>> Except: omap_hwmod: dcan1: _wait_target_disable failed. >>>> What should I do with this error messagge >>>> >>>> -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/be930680-f8dd-4b8d-8500-cde58a4f8011%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
