ChanServ changed the topic of #linux-rockchip to: Rockchip development discussion | IRC log http://irclog.whitequark.org/linux-rockchip | Community GH https://github.com/linux-rockchip | Rockchip GH https://github.com/rockchip-linux | ML https://groups.google.com/group/linux-rockchip
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<robmur01> warpme_: I'm pretty sure I was running full upstream ATF and U-Boot on my A1 (until that SD card got wiped in an unfortunate incident...); U-Boot had some hacks but that was mostly about setting the LED display
<robmur01> I've also apparently done it for NanoPi R2S as well, since the last build artefacts still sat in both directories are for that :)
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<warpme_> robmur01: yeah. i really surprised it is not working.... Still desperately trying avoiding opening box again and solder serial cables. Currently i have it booting by using bootloader from archlinuarm rock64 board but all the time i'm intrigued that a1 has so sloooow UI compared to i.e. s905w (the same mali mp450 gfx).
<warpme_> with rock64 bootloader, clocks on a1 are like this:
<robmur01> eh, I just pop the bottom off and run it upside-down with male pin wires wedged into the holes (the spacing is narrow but 3 "DuPont" style connectors can be convinced to fit and stay there) ;)
<robmur01> are you using "assigned-clock-rates" to hack the GPU clock in the DT?
<robmur01> if not, then it defaults to 168.38MHz which isn't even as fast as the minimum OPP
<warpme_> reading gpu clock from sysfs:
<robmur01> 754? :O
<warpme_> i'm switching default governor to "performance" - so thats why not so many transitions.....
<robmur01> I thought the OPP range was only 200-500!
<warpme_> yes. a bit OC :-)
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<robmur01> in which case I'd guess it's probably suffering from a lack of memory bandwidth
<robmur01> possibly RAM and interconnect clocks could be tweaked (maybe there are interconnect QoS issues too - I know there are for display)
<warpme_> robmur01: indeed QoS on interconnect imho is my first candidate. I bench mem.bw and it looks "good" (in a sense it is not worse than on other SOC) so thing is a bit more subtle
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