Turl changed the topic of #linux-sunxi to: Allwinner/sunxi /development discussion - did you try looking at our wiki? https://linux-sunxi.org - Don't ask to ask. Just ask and wait! - https://github.com/linux-sunxi/ - Logs at http://irclog.whitequark.org/linux-sunxi
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<jogoes> Good morning, anyone knows if is possible to connect a PCI/PCI express module to the A33 allwinner chips?
<icenowy[m]> you just got mad -- it's impossible without some weird bridge
<KotCzarny> maybe via some usb adapter?
<jogoes> lol
<jogoes> ok!
<jogoes> thank you!
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<JohnDoe_71Rus> poor usb bus. All the load on it ...
<icenowy[m]> so I say "weird bridge"
<f11f12> JohnDoe_71Rus: may he'll attach a PCI to USB bridge at the other end? That would be ok, load-wise (unless it's usb3)
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<Pe3ucTop> Question about DMA channels : do RX and TX could be at the same channel at one time ?? It's a bit unclear for me.
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<wens> it's possible
<wens> and "channel" is really a misnomer, since it is actually referring to the DRQ line number
<amonakov> what does "DRQ" stand for?
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<amonakov> "dma request"?
<wens> yes
<wens> same as IRQ :)
<wens> basically it signals the DMA controller to continue to transfer data
<amonakov> I'm looking at berlin2 video and dma ip, they use all kinds of unusual TLAs like HBO, BCM, BCH... aargh :)
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<mkid> Hi. I am trying to find documentation for DE 2.0 block. All checked Allwinner's user manuals consists only overview for Display Engine 2.0. Maybe someone can guide me to the right document?
<KotCzarny> did you check http://linux-sunxi.org/DE2_Register_Guide ?
<KotCzarny> and the pdf on it?
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<mkid> KotCzarny: Thank you. I overlooked the page.
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<Ixnus> Hello, who are the admins of the wiki ?
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<willmore> I guess they didn't want to know that badly.
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<willmore> Addes their RSS feed to my reader so I don't miss stuff like that, thanks, tl_lim.
<paulk-gagarine> thank god Allwinner provided clear and accurate documentation for the VPU: https://github.com/allwinner-zh/media-codec/blob/master/sunxi-cedarx/doc/Video%20Decoder%20API.pdf
<paulk-gagarine> </irony>
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<icenowy[m]> it's api
<icenowy[m]> not hw doc
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<paulk-gagarine> yeah, that's the irony...
<paulk-gagarine> their code is useful though
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<paulk-gagarine> jemk, hi
<paulk-gagarine> jemk, just looked at your commits for h265 support in libvdpau-sunxi, great stuff
<paulk-gagarine> jemk, out of curiosity, how did you figure that out?
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<icenowy[m]> but
<icenowy[m]> ah tl_lim please say it ;-)
<tl_lim> @icenowy, lets wait till the document finally deposit.
<tl_lim> at Sunxi wiki
<icenowy[m]> ok
<BenG83_> :)
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<icenowy[m]> H6 PCIe seems to be too broken
<icenowy[m]> The only possible way left is use the EL2 MMU to wrap it
<icenowy[m]> it has only 0x20000 address space -- 0x10000 for DBI area and 0x10000 for the currently mapped address page
<maz> icenowy[m]: yet another issue with write gathering?
<anarsoul|2> icenowy[m]: what's official allwinner way to use it?
<jernej> paulk-gagarine: mripard: Format V4L2_PIX_FMT_MPEG2_FRAME is not something tailored only for sunxi?
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<jernej> since RK VPU driver is also in the works , I hope both will have common formats
<jernej> so ffmpeg and the like doesn't need to support SoC specific formats
<icenowy[m]> anarsoul|2: modifying the driver.
<icenowy[m]> maz: write gathering?
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<anarsoul|2> icenowy[m]: I see.
<icenowy[m]> but the Linux PCI subsystem expects the memory space to be directly accessible from day 1
<anarsoul|2> and so far all the other PCI controllers provide direct access to the memory space, right?
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<maik_> Anybody has experience with the USB gadget mode (OTG). I am trying this with my BPI M2 Zero and armbian. Following this instructions (http://www.linux-usb.org/gadget/file_storage.html). When I load the g_mass_storange module, nothing happends on the USB host. Is there any USB OTG switch?
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<hanni76> maik_: i tried the thing some time ago with Opi PC
<hanni76> I was able to create uInitrd with the script and g_mass_storage was loaded fine with the EMMC device
<maik_> dmesg looks fine, except this: g_mass_storage gadget: userspace failed to provide iSerialNumber
<maik_> But i am not sure this is critical or not
<hanni76> I wasn't able to compete my test and access the device from my host machine
<hanni76> *complete
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<hanni76> as far as I understand I should now connect Opi PC+ to the host machine using usb host port
<hanni76> but I don't have a USB cable for this
<hanni76> it seems like I need A-A cable
<maik_> If I disconnect/connect the OTG cable, no reaction on both sides.
<hanni76> do you think USB drive should be available on the same USB connector ?
<hanni76> I mean the one whihc is used for FEL boot ?
<pmpp> fel/otg are on musb
<hanni76> I feel like that the device after FEL boot should be connected to a host machine using A-A usb cable
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<pmpp> last time i checked on mainline only g_serial was working
<hanni76> I may be wrong
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<pmpp> hanni76: otg use special voltage level to select master/slave you can use A ports for that
<maik_> I have this board http://www.banana-pi.org/bpi-zero.html. And I am trying with the OTG connector
<pmpp> can't*
<pmpp> you need a cable like there https://h3droid.com/fel-installer/fel-prepare-board
<hanni76> pmpp: the problem here that after FEL boot and mounting EMMC it is not visible on host machine when connected using OTG USB connector
<hanni76> like maik_ said - no reaction
<pmpp> on mainline setting up gadgets is a bit complicated ...
<pmpp> cleaner , more efficient sure, but also more complicated and less documented :(
<hanni76> pmpp: a have tons of such cables )
<maik_> pmpp: This looks like a normal smartphone like usb cable.
<pmpp> maik_: no there are such which are power only
<pmpp> and when you get a ton of them with same color error can happen ...
<pmpp> but if it boots FEL then it is ok for gadget mode
<maik_> pmpp: My one is a full 4 wire usb cable. Not just a power cable.
<hanni76> pmpp: FEL boot is ok for me.. my problem is that device is not visible as mass storage on the host machine
<pmpp> hanni76: can you paste your gadget sys fs setup script somewher ?
<maik_> What is about this message on the device "g_mass_storage gadget: userspace failed to provide iSerialNumber"?
<hanni76> pmpp: we follow armbian instructions
<pmpp> hmmm iirc msg won't show up until a image is set
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<pmpp> that's legacy mode
<pmpp> 3.4.113
<hanni76> I only removed setting otg_role value
<hanni76> and used this script for mainline
<pmpp> will never work
<hanni76> that's the question...
<hanni76> why not ?
<pmpp> mainline use composite and sysfs for setting up gadgets
<pmpp> let me find my notes
<icenowy[m]> pmpp: g_mass_storage is still available on mainline
<pmpp> 瑨灴⼺眯睷氮湩硵浥敢摤摥昮⽲〲㌱〯⼲潨⵷潴愭摮潲摩洭獡⵳瑳牯条ⵥ獵ⵢ慧杤瑥
<hanni76> ?
<icenowy[m]> anarsoul|2: right
<pmpp> icenowy[m]: sure but still need the new mode for configuration iirc
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<pmpp> as there's not more "otg_role" path
<hanni76> I can't read this..
<pmpp> hanni76: use the last link i had a copy paste error from synergy
<hanni76> I can't read fr
<maik_> Ok, now see some reaction. writing 0/2 to /sys/bus/platform/devices/sunxi_usb_udc/otg_role was missing
<maik_> I mean, the host is recognizing something ...
<pmpp> hanni76: https://translate.google.com/#auto/en/http%3A%2F%2Fwww.linuxembedded.fr%2F2013%2F02%2Fhow-to-android-mass-storage-usb-gadget%2F
<maik_> Thanks a million.
<pmpp> maik_: so you are on legacy kernel ?
<maik_> This one "inux bananapim2zero 3.4.113-sun8i #4 SMP PREEMPT Fri Mar 9 19:35:06 CET 2018 armv7l armv7l armv7l GNU/Linux"
<pmpp> yeah that is called "legacy kernel" here
<hanni76> pmpp: thx
<pmpp> you may want to check #h3droid too it uses the same kernel
<hanni76> pmpp: so we don't need g_mass_storage driver anymore in mainline ?
<pmpp> composite driver is more usefull i guess
<icenowy[m]> hanni76: yes
<icenowy[m]> but g_mass_storage can still be used for compatibility
<pmpp> fyi android use composite model so it may be more up2date
<KotCzarny> -sun8i looks like armbian
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