[PATCH] arm64: dts: rockchip: Add the GPU to Kobol Helios64
Igor Velkov
iav at iav.lv
Fri Oct 30 16:00:00 PDT 2026
On Fri, 30 Oct 2026 20:29:47 +0100, Heiko Stuebner wrote:
> > + regulator-always-on;
> > + regulator-boot-on;
>
> both of these should not be needed, as the GPU should control its
> regulator. (always-on and boot-on)
Without them it breaks on this board (v7.3):
- with panfrost not loaded, the regulator core turns vdd_gpu off 30 s
after boot and the next warm reboot hangs in the DDR init (TPL, DDR
blob v1.25, at "change freq to 856MHz"), 2 of 2; only removing power
recovers it. All 119 boots in my console log passed there with the
rail on.
- panfrost loaded after that: "failed to get ack on domain 'gpu'", the
GPU stays deferred, since pd_gpu powers up before mali-supply is on.
So I would keep always-on and boot-on, as the other RK3399 boards do.
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