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Author: tcmichals

Orangepi2/plus2/PC H3 Linux mainline support

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Published in 2016-2-15 17:08:38 from mobile | Show all floors
My opi pc has same 48 bogomips

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Published in 2016-2-16 15:35:40 | Show all floors
DreamDreams replied at 2016-2-15 17:08
My opi pc has same 48 bogomips

The BogoMIPS value does not give the rate of the CPU clock. In the actual state, this clock and the one of the DRAM  are set by the u-boot.In the Allwinner's u-boot, I set the CPU clock to 1200MHz (letting DRAM clock at 672MHz).
Then, with the kernel 4.5, the machine is as fast as with the kernel 3.4.

The CPU temperature is between 41° and 47° when the system is idle with an active screen (I have no cooling system). The difference of this temperature is unknown.

When the screen goes to low power, the temperature shuts about 5°.

Generating a kernel with 2 threads (make -j2) makes the temperature grow up to 58/62°. This generation takes about 1h30, and this is just the same time I get with the kernel 3.4 (dvfs from 480..1200MHz).

So, I would say that the mainline kernel is usable if you use:
- a USB network device,
- the Allwinner's u-boot.

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Published in 2016-2-18 00:24:46 | Show all floors
As far as I know, no one has got ethernet working yet.  

Soon, I will wear my kubernetes necklace of triumph.  -- except it's not going to be a kubernetes necklace of triumph.  It is going to be a github.com/klouds/kdaemon necklace of triumph!

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Published in 2016-3-22 15:41:58 | Show all floors
My opi pc has same 48 bogomips

opi-pc can have even more Bogomips than commercial 32-core processor based systems!

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Published in 2016-10-4 01:50:28 | Show all floors
Hi, I design a custom board using the H3. According to http://linux-sunxi.org/Linux_mainlining_effort#Status_Matrix only the EMAC and CSI are missing from the mainline kernel to run the expected applications on that board. But the WIP indication suggest that some peoples are already working on them.

For the EMAC I found this patch that seem to be already usable http://lists.infradead.org/piper ... ptember/455663.html Maybe there is a repository somewhere with a even more advanced version of this patch ?

For the CSI I have only found a patch for the clock. Did someone have more ? This is of special interest for me because on my design a use a FPGA to convert the MIPI CSI-2 two lanes of a image sensor into the DVP signals accepted by the H3 and this have obvious implication on the code used to configure the sensor by I2C. So If a get a chance to hack on a code that is likely hit the mainline, I will probably save time.

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Published in 2016-10-8 23:49:05 | Show all floors
Edited by LinuXperia at 2016-10-8 23:56
jcdr replied at 2016-10-4 01:50
Hi, I design a custom board using the H3. According to http://linux-sunxi.org/Linux_mainlining_effor ...

Not sure if you have seen it but it looks like that for the CSI Work in Progress part M. Ripard is assigned.
For contacting him direct see his email here => https://git.kernel.org/cgit/linu ... me+Ripard&showmsg=1

He is also from what i see the one responsible to insert the sunxi patches to the mainline kernel source.

M. Ripard is now the official mainline Linux kernel maintainer of the Allwinner A1X SoC ARM subarchitecture (arch/arm/mach-sunxi/).

Would be great if you could tell him about the EMAC driver you linked to be inseted as fast as possible if it is proved to work!

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Published in 2016-10-14 14:44:50 | Show all floors


does anyone knows if anyone did the kernel corrections for midi support
????

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Published in 2016-12-13 03:02:20 | Show all floors
I'm not a negative person, but honestly i regret buying this so much.
Yesterday it crashed several times during streaming a tv-show to my android box.

The board felt quite warm, so i guess i already burnt my orange pi plus 2?
I have it 1 weekend, i've spent my weekend setting debian and omv up...and €50 down the drain

Am i the only one with this experience?

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Published in 2017-1-4 01:06:24 | Show all floors
Mikail replied at 2016-12-13 03:02
I'm not a negative person, but honestly i regret buying this so much.
Yesterday it crashed several t ...

Hey, i feel like you, maybe it works next year. Lakka OS though is a good one.

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Published in 2017-1-5 03:03:13 | Show all floors
Giantofstone replied at 2017-1-4 01:06
Hey, i feel like you, maybe it works next year. Lakka OS though is a good one.

I'm using it as an nas server, so I need debian for openmediavault.
I've placed heatsinks, so now it's at a lower temp, but still high.

I've disconnected the usb drive and now it doesn't crash anymore...
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