03:31 <Myy> Meow

03:33 <wzyy2> spend some time to study how to use OpenCV with gstreamer ; )

03:33 <wzyy2> https://github.com/wzyy2/gstreamer-opencv

03:33 <wzyy2> performance is quite good

03:36 <wzyy2> rockchip Linux now are really powerful.. ：-D

03:51 <amstan> wzyy2: awesome, what are you using it for?

03:54 <wzyy2> just help the customer

03:55 <wzyy2> Give them the pipepline that have the best performance, and they could add the algorithm they want

03:58 <amstan> wzyy2: mipi cameras?

04:00 <Myy> Interesting !

04:05 <Myy> rperier, I didn't have much time to investigate this issue, however the new logging functions in the stmmac functions provoke a crash on boot when using MiQi devices (RK3288). I don't know if that's a DTS issue from the MiQi side, or something else. Here's the issue https://github.com/Miouyouyou/RockMyy/issues/1 and here's the a patch that comment the newly added phy_attached_info, until I understand why it fails : https://github.com/Miouyouy

04:05 <Myy> ou/RockMyy/blob/master/patches/kernel/v4.13/0012-net-stmmac-Reverting-a-part-of-Use-the-right-logging.patch

04:05 <wzyy2> not only camera

04:06 <wzyy2> usb camera/mipi camera/video file/rtsp

04:06 <Myy> Link got split up : https://github.com/Miouyouyou/RockMyy/blob/master/patches/kernel/v4.13/0012-net-stmmac-Reverting-a-part-of-Use-the-right-logging.patch

04:06 <wzyy2> https://github.com/wzyy2/gstreamer-opencv/blob/master/PipeLines.h

04:06 <Myy> Anything that can provide a framebuffer with a picture in it ? :3

04:08 <wzyy2> anything that you can use in gstreamer

04:10 <Myy> Meanwhile, I spent a week trying to understand how to map DRM PRIME File descriptors in user-space (using mmap) on my Radeon 7950 until I understood that no GPU with discrete memory implement the gem_prime_mmap. Only the embedded systems implement it. So, while it fails on Radeon, it worked on my RK3288. Now, I'll be able to focus on mapping the DMA Buffer on the kernel side, and repair this VPU driver on mainline kernels for good.

04:15 <Myy> Anyway, here's a small sample that should work on Rockchip systems. This does not setup the Kernel Mode Setting though, it just allocates a dumb buffer, map it and then unmap it. https://gist.github.com/Miouyouyou/dc899cbe9b30f237b2b2096a4c51133b

04:33 <wzyy2> You could try vpu driver in 4.12, it should work- -

04:40 <Myy> Yeah, I'll give it a shot. Now, I'd like to understand how IOMMU and DMA Buffer mapping work in details, and discuss some things with the #armlinux guys and the devs on the IOMMU mailing lists, in order to see if there's a way to clean up the code and make it as small as possible, by reusing various API that were added between the 4.4 kernel and the 4.13

06:43 <rperier> Myy: it has been fixed upstream already

06:43 <rperier> Myy: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/drivers/net/phy/phy_device.c?id=fcd03e362b1cd17de487953aac34f2d4574895cf

06:45 <rperier> could you try it ? :)

06:49 <Myy> I'll give it a try

07:13 <Myy> It works ! :)

21:59 <JustinTime4Tea25> Anyone using PCIe wireless device with a Rockchip board?

21:59 <JustinTime4Tea25> (mini-PCIe)