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<Myy>
мяу
<ayaka>
Russian this time?
<Myy>
Yup
<Myy>
This week I tried to focus on enabling Bluetooth support for Tinkerboarders, but something is still missing for some reasons. Next week, I might be able to get my hands on a Tinkerboard to test a few things directly.
<Myy>
We could make it work with the staging driver
<BenG83_>
original thread is here
<Myy>
Just had to add the necessary definitions in the DTS and the firmware, and the WiFi part was unlocked
<BenG83_>
nice
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<Myy>
However, Bluetooth is quite an unknown territory to me. So I'm quite lost with the whole combo :3
<BenG83_>
yeah at first we tried to find a kernel drier
<BenG83_>
but then found that there is only a firmware loader
<BenG83_>
firmware comes from the Android images
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<BenG83_>
and then that rtk_hciattach uploades the firmware, swithces baudrate and attaches the thing to the bluetooth stack
<Myy>
The usual "software archeology" :)
<BenG83_>
so the kernel needs that h5 BT protocol
<Myy>
Does it need specific definitions in the DTS
<BenG83_>
not that I know of
<BenG83_>
the wifi side of the thing has dts optiosn for the kernel module
<BenG83_>
like the efuse map
<BenG83_>
and the wifi has some options in the module for BT coexistence
<Myy>
Yeah, which caused a lot of confusion during my searches
<BenG83_>
because I think they share the same radio in the chio
<BenG83_>
*chip
<Myy>
As there's a module named "RTKBTCOEXIST" which, in the end, seemed to be more useful for PCI Express chips and then SDIO ones
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<Myy>
I'll see if I get some feedback in the next hours :)
<BenG83_>
is the Tinkerboard RTL8723bs not SDIO attached?
<Myy>
It is !
<BenG83_>
ok
<BenG83_>
because I think there is also a USB version that works totally different
<Myy>
However there's a hidden driver named rtkbtcoexist that is enabled if you activate support for the PCIe ones
<Myy>
Which is completely unrelated to the SDIO ones, in the end, it seems
<Myy>
But since the SDIO ones return the BTCoexist chip name, I thought that was needed
<BenG83_>
suspend is a bit tricky
<BenG83_>
I think atm we just rerun the complete firmware upload on resume
<Myy>
Well, BT starting and working will be enough for the moment :3
<Myy>
The next issue is the reboot issue, which wzyy2 kind of told me how to resolve
<Myy>
Currently, when rebooting, the SD module is not powered again and the machine becomes stale, since it does not have any boot device anymore
<Myy>
So if these two issues get resolved, I think the Tinkerboard should almost be 4.12 compliant
<Myy>
The last part will be the VPU side.
<Myy>
Is there any reason to suspsend the BT anyway ? Beside power issues ?
<BenG83_>
not on the Pine64, but on the Pinebook it had to work :P
<Myy>
Ah, battery saving ? :)
<BenG83_>
yeah
<BenG83_>
suspend now works most of the time
<Myy>
Now I'm thinkg about it, trick question for RK3288 Mali drivers maintainers : Why does the Firefly Mail drivers for Framebuffer (fbdev) have the Vulkan calls symbols ? Were anyone able to use them ? I've looked at the Vulkan documentation however, no one seem to have tried to use Vulkan combined with fbdev.
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