#linux-rockchip on 2022-07-18 — irc logs at libera.irclog.whitequark.org

2021-06-29 16:00 ChanServ changed the topic of #linux-rockchip to: Rockchip development discussion

00:01 <lvrp16> Sorry that was hevc

00:01 <lvrp16> https://usercontent.irccloud-cdn.com/file/6xBafSE1/20220717_200059.mp4

00:03 <CounterPillow> yeah, it's the memory controller not giving the video output processor high priority quality of service

00:03 <CounterPillow> unfortunately the TRM doesn't include the QoS registers for VOP so I was never able to poke at it

00:08 <lvrp16> CounterPillow: ahh understood, thanks :D

00:10 <lvrp16> CounterPillow: I can get those if you would like.

00:11 <CounterPillow> I'm not really working on rk3328 stuff anymore but finding the regs would be excellent! I think in u-boot, the vop qos is set for the rk3288 if you wanna see how u-boot does that for that chip

00:11 <CounterPillow> I think the kernel may be able to set it too but I don't know anything about that, I'm pretty new to this stuff myself

00:12 <lvrp16> CounterPillow: yeah no worries, I'll get it upstream soon

00:19 <lvrp16> ahh https://github.com/rockchip-linux/kernel/blob/develop-4.4/arch/arm64/boot/dts/rockchip/rk3328.dtsi#L1429

00:21 <CounterPillow> none of those are vop, unfortunately, I checked there :)

00:25 <CounterPillow> there's also nothing in http://opensource.rock-chips.com/images/9/97/Rockchip_RK3328TRM_V1.1-Part1-20170321.pdf as far as I can see

00:28 <CounterPillow> from comparing with other SoCs with similar IP on it I concluded it may be around 0xff760000 but it was frustrating to find the right regs as even reads would cause the processor to hang

00:29 <lvrp16> CounterPillow: hmm I will ask RK then

00:30 <CounterPillow> good idea

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01:21 <lvrp16> https://usercontent.irccloud-cdn.com/file/mVqhHeZ8/Screenshot%20from%202022-07-17%2021-20-27.png

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01:24 <lvrp16> there's also notes about increasing vdd by 0.1 🤔

01:26 <lvrp16> https://usercontent.irccloud-cdn.com/file/NCwYOMT2/Screenshot%20from%202022-07-17%2021-26-10.png

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03:21 <lvrp16> CounterPillow: thanks! I found this. https://scm.linefinity.com/common/u-boot/commit/9b8320167ea05ede1e5d30dfeb14850fdf2355b2?style=unified&whitespace=

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18:11 <macromorgan> does anyone know the status (other than "coming soon") for the A-TF sources for the RK356x series?

18:12 <macromorgan> Failing that, has anyone had any luck building the SPL stage for an 356x series with the BSP sources? I can get a custom SPL stage working with mainline (using the ram init binary).

18:13 <macromorgan> The binary file provided by the rkbin repository appears to be a simple SPL though... and I can't get a custom one working

18:22 <lvrp16> CounterPillow: that solved the flickering issue. many thanks. I just hacked the register and the problem went away. once I get the qos_vop working via pm, i'll submit a patch.

18:24 <CounterPillow> nice! thanks for looking into this

18:29 <lvrp16> CounterPillow: if you ever need any info from the TRM, let me know.

18:29 <CounterPillow> thanks

18:29 <CounterPillow> btw was this in the public trm or a private version? Maybe I just overlooked the info in the public one :S

18:30 <lvrp16> I think part 1 is online but part 2 is not.

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20:55 <lvrp16> CounterPillow: sorry, misread your question. it was in Part 2 the private one.

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