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Bootlin Wraps Up Feature Development On The Allwinner Cedrus VPU Driver

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  • Bootlin Wraps Up Feature Development On The Allwinner Cedrus VPU Driver

    Phoronix: Bootlin Wraps Up Feature Development On The Allwinner Cedrus VPU Driver

    While the Allwinner VPU "Cedrus" video decode driver is a wonderful success of open-source third-party work expanding Linux's multimedia hardware acceleration capabilities, consulting firm Bootlin who spearheaded this driver is for now at least is ending feature development on this driver...

    http://www.phoronix.com/scan.php?pag...s-Feature-Over

  • pal666
    replied
    Originally posted by RussianNeuroMancer View Post
    Actually KDE and Mate works pretty well even without accelerated rendering
    without accelerated rendering they render on cpu. cpu performance is also not strong part of alwinner

    Leave a comment:


  • chithanh
    replied
    Originally posted by ed31337 View Post
    Actually, it seems to be already fixed in revision 1.2 boards that have been showing up here and there. But yes, the foundation says nothing about it because they likely have original revision boards in the sales pipeline that they do not want to Osbourne.
    I don't get it.
    For one, the Foundation is completely downplaying the USB-C power issue, saying it is no big deal. And in the same thread they boast selling as many RPi4 as they can make. (Translation: "We don't care, because we don't have to.")
    On the other hand, they refuse to give information about the fixed revisions because people would hold off on buying RPi4 (the Osborning)? If it was no big deal as they claim, why would masses of people stop buying the device?

    Leave a comment:


  • pabloski
    replied
    Originally posted by willmore View Post

    Not needed as the camera module does that task. And way more power efficiently than some old Broadcomm chip.
    Don't know about camera modules that do h264 encoding. I tried with the BananaPi one, the NanoPI and the Raspi. Not one of them encodes the stream in h264 directly.

    Leave a comment:


  • caligula
    replied
    Originally posted by pabloski View Post
    With the NanoPi even the official images cannot boot.

    In summary, I am very disappointed with the "chinese boards".
    I'm guessing the official image doesn't even use a mainline kernel. So.. you're looking at table that's describing kernel X (version 5.x from vendor A) and then install kernel Y (4.x or maybe even 3.x series from vendor B). What did you expect?

    Leave a comment:


  • willmore
    replied
    Originally posted by pabloski View Post
    Nope, no h264 encoding with ESP32.
    Not needed as the camera module does that task. And way more power efficiently than some old Broadcomm chip.

    Leave a comment:


  • ed31337
    replied
    Originally posted by chithanh View Post
    Plus the non-conforming USB-C issue, and the foundation will not even give a rough timeframe when it's going to be fixed.
    Actually, it seems to be already fixed in revision 1.2 boards that have been showing up here and there. But yes, the foundation says nothing about it because they likely have original revision boards in the sales pipeline that they do not want to Osbourne.
    Last edited by ed31337; 01-10-2020, 02:24 PM.

    Leave a comment:


  • pabloski
    replied
    Originally posted by caligula View Post

    If you just need video, there are dozens of boards out there. I'd probably use ESP32,
    Nope, no h264 encoding with ESP32.

    Originally posted by caligula View Post
    edit: Anyway, my point was, why are you even comparing these boards. Why would anyone consider a huge multi-purpose board if you only need a subset of the features. You need a larger case, more expensive parts, more power etc.
    I am not comparing them. I am comparing the software support the makers offer. The RPi Foundation offers top notch support. The others...meh!

    Leave a comment:


  • pabloski
    replied
    Originally posted by caligula View Post

    FWIW, according to this page the open source support is pretty good for some chips, but you'll need a recent kernel, not a LTS one: http://linux-sunxi.org/Linux_mainlin...#Status_Matrix

    Looking at that table, you'll mostly face problems if you need MsgBox (whatever that is), CVBS, or HDMI audio. TBH, I wouldn't use these on desktop (obviously, if you just recently finished with video support, what can you expect?). But e.g. some people who bought the Nintendo classic edition say that the Allwinner chip is pretty much fully supported. Some tablet users run Linux on A33. The affordable Orange Pi boards run quite well they say. So, YMMV.
    Yes, on paper. I watched at the same exact table. Then bought the BananaPi and the NanoPi. Both have horrible support in real life. With the NanoPi even the official images cannot boot. It starts booting, then stops with a black screen. Changing the sd card, flashing the emmc, changing display. Nothing. Zero. But it boots with Armbian. So it is not a hardware problem.

    In summary, I am very disappointed with the "chinese boards".

    Leave a comment:


  • chithanh
    replied
    Originally posted by bavay View Post
    Well, that's kind of an overstatement: the competition produces USB3 with USB-C connectors with unsatisfactory power regulation leading to massive data corruption when connecting some usb3 drives (like an ssd) to the said usb-c.
    Admittedly running non-trivial power sinks directly off a SBC has never been a good idea. The RPi too has undergone several revisions in the past regarding its USB power output. Don't do that and expect it to work.

    The main and almost exclusive purpose of the USB-C connector in the RPi 4 is however supplying it with power, and they managed to mess up even that.
    Originally posted by OneTimeShot View Post
    PiCamera is a separate product to the RPi.
    The mere existence of the PiCamera is detrimental to RPi owners. The RPi will perform the DRM check if you connect another camera with the same sensor, and refuse to work if the crypto key does not match.

    Originally posted by OneTimeShot View Post
    There are no competitors to the RPi who properly support OpenSouce.
    Originally posted by pabloski View Post
    Yeah but this doesn't justify the deplorable state of affairs in regard to other SBCs. I buy a board and cannot use it to its full extent, because there is no opensource support?
    Using the "full extent" isn't even possible on the RPi, all boards have incomplete support. Question is whether the important functions work. There are a number of SBCs which have proper open source (even mainline) support nowadays, thanks to sunxi-cedrus, Panfrost/Lima/Etnaviv/Freedreno, etc. The DragonBoard 410 was the first such board iirc. And there were even other competing boards with BCM2835 until Broadcom suddenly stopped supplying chips, presumably due to exclusivity demands of the RPi Foundation.

    Leave a comment:

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