#linux-rockchip on 2019-11-20 — irc logs at freenode.irclog.whitequark.org

2017-05-08 04:47 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

00:14 <micken> when is it safe to power off boot cpu? PMU reg 0014?

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00:58 <micken> ah now my gic code is broken :D

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01:42 <micken> RISC OS 987MB

01:42 <micken> Cortex-A72 Processor

01:42 <micken> \o/

01:42 <micken> half not working

01:42 <micken> GIC is not working so

01:50 <micken> seems like only core 0 gets interupted

01:50 <micken> micken: rtfm

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02:39 * flacks grabs popcorn

02:43 <anarsoul> flacks: any luck with fixing reboot issue?

02:46 <flacks> no, just testing different versions of u-boot/bl31 before diving into the code

02:47 <flacks> have yet to build linux for this chip, will probably start with ayufan's tree in an attempt to help identify the whereabouts of the regression

02:55 <flacks> what I don't get is that it'll sometimes reboot successfully. it rebooted successfully twice just now

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06:50 <anarsoul> flacks: yeah, it looks like some regulator issue but I checked all the regulators and they're fine

06:51 <anarsoul> also I'm not sure if it's a regression, I've never seen it working on mainline

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11:41 <mrjay> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1825222

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12:26 <robmur01> anarsoul: FWIW my NanoPC-T4 reboots just fine with a mainline kernel

12:27 <robmur01> firmware is a mainline u-boot from when RK3399 support was just landing, with downstream rkbin miniloader and ATF

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14:18 <pcbBob> matthias_bgg You sent me a private message I think

14:18 <pcbBob> are you still here?

14:18 <matthias_bgg> pcbBob, well I mentioned you in #linux-mediatek

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16:01 <anarsoul> robmur01: try upstream SPL and ATF. ATF is responsible for reload (kernel does it with PSCI)

16:02 <micken> anyone: How can I redirect gic to a72?

16:02 <micken> as it is now core 0 of a53 gets interrupts

16:03 <micken> affinity

16:03 <micken> but can't really figure it out

16:06 <robmur01> micken: GICD_IROUTERn, I *think*

16:06 <maz> robmur01: yup.

16:06 <micken> robmur01: ok

16:07 <robmur01> https://static.docs.arm.com/ihi0069/e/Q1-IHI0069E_gic_architecture_specification_v3.1_19_01_21.pdf

16:07 <robmur01> enjoy :P

16:09 <maz> robmur01: why are you so horrible to the poor sod? ;-)

16:09 <micken> robmur01: maz thanks

16:15 <robmur01> maz: because thanks to somebody I feel obliged to know more about the GIC, so I'm taking it out on everyone :P

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16:23 <maz> robmur01: you're welcome! :D

16:23 <maz> robmur01: the v4.1 code needs moar reviewing!

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19:07 <micken> touching icc_igrpen0 makes el3 exception

19:08 <micken> in other words , I have no idea of what I am doing.. when used core 0 only I didnt need to do much setup

19:08 <micken> and regarding routing

19:09 <micken> that register is offset+(irq*8)?

19:09 <micken> I don't know what to put there , but I think bit 31 is good

19:11 <micken> I have a old gicv2 implementation , and the cpu inerface is different ( and more things)

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20:48 <pcbBob> Can someone tell me why webchat.freenode.net disconnects me after like half an hour?

20:48 <pcbBob> What IRC client are you using?

20:57 <micken> irssi

20:58 <micken> robmur01: one thing is puzzling me, how do I connect the cpu/cluster to gic , make the pe to accept spi's

21:00 <micken> and is GICD the first segment in the GIC block?

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22:41 <flacks> robmur01: can you link to the miniloader and ATF you're using? feel free to PM

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22:54 <robmur0121> micken: on RK3399 you definitely have GICv3 (GIC-500), it just has the GICv2 compatibility mode option too ;)

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23:02 <robmur0121> I don't know off-hand the exact sequence of stuff to enable, but I'd hope it's mostly just a case of tweaking whatever existing setup to target a different CPUIF

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23:05 <robmur0121> then set the affinity of SPIs to the appropriate MPIDR (e.g. 0x100 instead of 0)

23:07 <robmur0121> flacks: just https://github.com/rockchip-linux/rkbin/ as of however long ago it was

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