https://community.nxp.com/t5/i-MX-Processors/RIoTBoard-and-ENOTTY-error/m-p/1326143#M178733 <P>Hello!</P><P>I have RIoTBoard (with i.mx6 solo), And I want to get a simple video stream with HSYNC, VSYNC, DATA[8], CLK...</P><P>In the default configuration, I can read the data from /dev/video0</P><P>But after update: u-boot, linux(5.4 with: imx_v6_v7_defconfig, imx6dl-riotboard.dts), ubuntu(18.04), and after reading the device /dev/video0, i get error: "Invalid argument".</P><P>strace xxd /dev/video0:<BR />ioctl(3, TCGETS, 0xbeb8ba4c) = -1 ENOTTY (Inappropriate ioctl for device)<BR />read(3, 0xe14170, 4096) = -1 EINVAL (Invalid argument)</P><P>Maybe I need to change the file imx6dl-riotboard.dts?<BR />How do I get a video stream? Where to read about it?</P><P>Thanks in advance.</P> Thu, 19 Aug 2021 08:52:23 GMT fademike 2021-08-19T08:52:23Z https://community.nxp.com/t5/i-MX-Processors/RIoTBoard-and-ENOTTY-error/m-p/1326143#M178733 <P>Hello!</P><P>I have RIoTBoard (with i.mx6 solo), And I want to get a simple video stream with HSYNC, VSYNC, DATA[8], CLK...</P><P>In the default configuration, I can read the data from /dev/video0</P><P>But after update: u-boot, linux(5.4 with: imx_v6_v7_defconfig, imx6dl-riotboard.dts), ubuntu(18.04), and after reading the device /dev/video0, i get error: "Invalid argument".</P><P>strace xxd /dev/video0:<BR />ioctl(3, TCGETS, 0xbeb8ba4c) = -1 ENOTTY (Inappropriate ioctl for device)<BR />read(3, 0xe14170, 4096) = -1 EINVAL (Invalid argument)</P><P>Maybe I need to change the file imx6dl-riotboard.dts?<BR />How do I get a video stream? Where to read about it?</P><P>Thanks in advance.</P> Thu, 19 Aug 2021 08:52:23 GMT https://community.nxp.com/t5/i-MX-Processors/RIoTBoard-and-ENOTTY-error/m-p/1326143#M178733 fademike 2021-08-19T08:52:23Z https://community.nxp.com/t5/i-MX-Processors/RIoTBoard-and-ENOTTY-error/m-p/1327517#M178888 <P>Basically, you can try to porting this board (modify the dts file) base on the schematic if you have the schematic of this board.</P> <P>&nbsp;</P> <P>For your information:</P> <P><A href="https://www.nxp.com/design/software/embedded-software/i-mx-software/embedded-linux-for-i-mx-applications-processors:IMXLINUX?tab=In-Depth_Tab" target="_blank">https://www.nxp.com/design/software/embedded-software/i-mx-software/embedded-linux-for-i-mx-applications-processors:IMXLINUX?tab=In-Depth_Tab</A></P> <P>&nbsp;</P> <P>There is a linux porting guide. You may read it for reference.</P> Mon, 23 Aug 2021 07:24:20 GMT https://community.nxp.com/t5/i-MX-Processors/RIoTBoard-and-ENOTTY-error/m-p/1327517#M178888 jimmychan 2021-08-23T07:24:20Z