<embed-3d>
Hey, I'm currently working on a driver for the gpu poweroff gating for an a83t. I currently have the issue, that my child node is never getting probed. Does somebody knows what I'm doing wrong? https://pastebin.com/VTem5pXk
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<jernej>
embed-3d: I don't think clk driver expects sub nodes
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<jernej>
only two types of drivers expects subnodes (that I know) are bus drivers and multi functional device drivers
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<jernej>
subnode may not be correct term here, subdevice is better
<jernej>
what are you trying to achieve?
<embed-3d>
jernej: Thanks! I'm currently working on getting the gpu running on the a83t and a31(s) with the provided bspb driver. So basically it is working with some quirks, but I want to have a proper solution fot that. This poweroff gating needs to be turned on and off and I'm working on getting a proper driver for this
<jernej>
can you tell me register and bit number you want to toggle?
<embed-3d>
It is in the GPU_PWROFF_GATING_REG, BIT(0)
<embed-3d>
Page 252 in the a83t manual
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<jernej>
I think best way would be to just extend allwinner,sun8i-a83t-r-ccu driver with registering power domain controller
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<jernej>
embed-3d: what kind of driver exists for A83T?
<jernej>
GPU driver, I mean
<embed-3d>
Hmm okay, my target was to touch as less as possible, but your suggestion might be the best approach. Then I need to write two drivers. One for a83t and one for a31(s)
<embed-3d>
That driver is part of the bsp kernel for a83t. But it I found out today that it is mostly useless, since alwinner compiled the user space libs with some not mainline friendly arguments and it requires an x server.
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<embed-3d>
So I need to patch the ti userspace libs to get it working...
<anarsoul>
embed-3d: just get yourself a soc with well supported GPU? :)
<jernej>
where is fun in that? :)
<embed-3d>
arnarsoul: I have plenty with good supporters GPU, but I want to work on something new and have fun :D
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<anarsoul>
I see
<anarsoul>
hope you'll have fun :)
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<tuxd3v>
o joice ,tried all combinations of atf{v2.2,v2.3} and uboot 2020.{01,04}
<tuxd3v>
on rockpro64
<tuxd3v>
I am using a 'boot.scr' file to load the kernel
<tuxd3v>
don't know if that could be the problem..