On 2025-03-06 19:08, Heiko Stübner wrote: > Am Donnerstag, 6. März 2025, 17:55:16 MEZ schrieb Jonas Karlman: >> Hi Chukun, >> >> On 2025-03-06 13:38, Chukun Pan wrote: >>> The Quality-of-Service (QsS) node stores/restores specific >>> register contents when the power domains is turned off/on. >>> Add QoS node so that they can connect to the power domain. >>> >>> Signed-off-by: Chukun Pan <amadeus@xxxxxxxxxx> >>> --- >>> arch/arm64/boot/dts/rockchip/rk3528.dtsi | 160 +++++++++++++++++++++++ >>> 1 file changed, 160 insertions(+) >>> > >> >> These QoS node are typically referenced from power domains so that the >> PMU driver know what QoS to save/restore when a power domain is power >> cycled. >> >> Vendor kernel only reference the two qos_gpu nodes in it's power domains, >> do you have any documentation or knowledge about what power domain the >> remaining QoS are related to? > > I think the GPU actually is the _only_ fully switchable power-domain on the > rk3528. The other powerdomains seem to be always on, but can do this > idle-request thing. > > At least that is what I'm reading from the pm-domain definitions in the > vendor-kernel, combined with a look at the pmu section of the rk3528 TRM. Thanks for this information. Regards, Jonas > > > Heiko > >
