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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<hverkuil1> I have been trying to set up my firefly rk3399 in order to do mainline kernel testing and development. Yesterday I was finally able to boot up a mainline u-boot on my sd card.
<hverkuil1> The next step is to load a mainline (4.16-rc1) kernel using tftpboot.
<hverkuil1> It loads fine, but all I see is 'Starting kernel ...'.
<hverkuil1> I use this as bootargs: earlycon=uart8250,mmio32,0xff1a0000,1500000n8 console=ttyS2,1500000n8 root=${root} ro rootwait
<hverkuil1> I'm loading uImage at address 0x02000000 and the dtb at address 0x01f00000. Everything is compiled in so no modules.
<hverkuil1> uImage is created with: mkimage -A arm64 -O linux -T kernel -C none -a 0x02000000 -e 0x02000000 -n ${KERN} -d arch/arm64/boot/Image arch/arm64/boot/uImage
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<hverkuil1> I have no idea what's wrong. Does anyone have any suggestions?
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<LongChair> hverkuil1: you want to talk with ayufan :)
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<hverkuil1> LongChair: thanks. Do you know what timezone ayufan is in? EU, US, Asia?
<tkaiser> EU
<hverkuil1> OK, that's handy.
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<tkaiser> beeble: Did you find time asking your colleague about PCIe performance/issues and RK3399? :)
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<hipboi> tkaiser, what PCIe performance issue
<hipboi> tkaiser, i have question for you
<tkaiser> Yes?
<hipboi> The two usb3 speed drops a lot when writing at the same time
<tkaiser> hipboi: Did you increase coherent pool size?
<tkaiser> With the default size (256 KB) I experienced this behaviour but when set to 2 MB it's fine
<hipboi> Oh, yes, I read your post on the forum
<tkaiser> So still an issue?
<hipboi> i will have a try
<hipboi> I remember I tried before, let me confirm
<tkaiser> For me it solved the issue instantly
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<mmind00> hverkuil1: I'm doing similar things ... my bootargs also look similar, but without the rate-option: https://github.com/mmind/u-boot-rockchip/commit/f584928837d7a47383fb65a22ed494c6b62772a0#diff-a0ea921be645c9857372831d9fe4088dR37
<mmind00> hverkuil1: other than that, I'm currently loading FIT images ...
<hipboi> tkaiser, increasing coherent pool size no help
<hverkuil1> mmind00: I'll give that a try.
<tkaiser> hipboi: Strange, I was back at +390 MB/s when writing simultaneously to two USB3 attached SSDs.
<tkaiser> hipboi: Are the drives used UAS capable?
<hipboi> tkaiser, both 390+MB?
<hverkuil1> mmind00: FIT isn't compulsory, is it?
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<mmind00> hverkuil1: I don't think so
<tkaiser> hipboi: No, there's an overall limitation. Each drive can get 390 MB/s but both drives in parallel are limited to the same number
<mmind00> hverkuil1: but that's the type that currently works for me :-)
<hipboi> tkaiser, so the limitation is the driver, right?
<hverkuil1> It's always a struggle to get a sbc up, but rockchip is particularly difficult.
<hipboi> tkaiser, Both controller uses the same driver?
<tkaiser> hipboi: Yes, but depending on the kernel the two ports use different IRQs (or not -- have seen that few weeks ago)
<tkaiser> hipboi: I don't know why the '2 drive' limitation is there.
<tkaiser> But you should check with 'lsusb -t' whether the drive enclosures use UAS or not. Without UAS terrible performance seems always be plausible
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<hipboi> tkaiser, both driver are uas
<hipboi> tkaiser, let me test on PC
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<hverkuil1> mmind00: Thank you! Your fit file had a load address of 0x02080000, and I used 0x02000000. Changing that fixed my boot problem!
<mmind00> hverkuil1: great that it's working for you now :-)
<hverkuil1> mainline u-boot sets kernel_addr_r=0x02000000. I just copied that :-(
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<hverkuil1> mmind00: do you have a working .config file for me? It won't detect the mmc and I can't easily figure out what I am missing.
<hverkuil1> so close...
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