alyssa changed the topic of #panfrost to: Panfrost - FLOSS Mali Midgard & Bifrost - Logs https://freenode.irclog.whitequark.org/panfrost - <daniels> avoiding X is a huge feature
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<narmstrong> endrift: honestly, the HW is very correct and simple (no IOMMU and complex PM stuff), and almost no bugs, but yeah the vendor source code is really crappy
<narmstrong> endrift: having vendor tweaks in driver seems a nonsense, but it's pretty common when dealing with generic IPs like ARM or Synopsys ones
<endrift> it was specifically the source code that gave me this reaction
<endrift> I was trying to fix a bug in one kernel for one chip that made the cores not all come back up properly after a suspend
<endrift> and they'd just randomly refactored core power management routines for no apparent reason
<endrift> I have to imagine they were shotgun debugging
<endrift> which is discouraging in kernel code
<endrift> I believe the issue ended up being that only one of the cores ended up getting reattached to the CPU governor for whatever reason (I never fixed it) so while all the cores did come back up only one ever got reclocked above 40 MHz
<endrift> which led to things seemingly behaving like it was a single core; anything that ran on the second core was just incredibly slow until it got moved to the first core
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<icecream95> alyssa: MALI_AFBC_YTR is definitely the right bit for making the red and blue channels be TRanslated down by Y (green)
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<alyssa> icecream95: I mean it's YUV but yeah, i'm fairly certain it's a rockchip display kernel bug which I guess I should send a patch for
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