Turl changed the topic of #linux-sunxi to: Allwinner/sunxi /development discussion - did you try looking at our wiki? https://linux-sunxi.org - Don't ask to ask. Just ask and wait! - https://github.com/linux-sunxi/ - Logs at http://irclog.whitequark.org/linux-sunxi
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<igraltist> hi
<igraltist> could be a dac which is designed for rpi3 running on opipc?
<KotCzarny> sure, if the kernel supports it
<KotCzarny> or if module compiles on your kernel
<igraltist> ok have to dig into
<igraltist> i was thinking about the hifiberry dac to replace my old rpi1 usb dac
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<miasma> it uses i2s via the gpio pins?
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<MoeIcenowy> wens: thanks for applying R40 CCU driver ;-)
<MoeIcenowy> now I should consider the problem to create a regmap within it? ;-)
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<igraltist> miasma: yes
<igraltist> i do check and the opipc connected to ethernet only need ~0,3-40,4 watt in ilde
<MoeIcenowy> oh I cannot read your number
<MoeIcenowy> 0,3-0,4?
<igraltist> 0.3-0.4 sry :D
<igraltist> german style forgot
<KotCzarny> remember that if you connect uart or usb to pc, it will steal power from there
<KotCzarny> so only measure power when only 1 cable is connected to the board
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<igraltist> on longer idle time the opipc is between 0.1 - 0.2 watt
<KotCzarny> impossible, unless you have used tkaiser's power tweak script. it's probably stealing power from something
<igraltist> no
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<igraltist> only ethernet and uart connected
<KotCzarny> told'ya. it's stealing power via uart. disconnect and measure again
<igraltist> this you mean i was thinking in other way
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<igraltist> change only a bit its stand on 0.2
<KotCzarny> what do you use to measure power consumption?
<igraltist> yes
<igraltist> now all unplugged and 0.1 watt
<diego71> 0.1W or 0.1A ?
<igraltist> 0.1Watt
<KotCzarny> you must be measuring wrong.
<KotCzarny> unless it's in some 'sleep-to-ram' state
<igraltist> i just plugin into and read nothing more
<igraltist> no i boot for testing a opipc2 with armbian and its used 0.7 watt after booting finish
<igraltist> now
<KotCzarny> impossible. your meter is broken.
<igraltist> ok
<KotCzarny> oh, wait, 0.7 watt might be ok
<KotCzarny> but not 0.1-0.2
<igraltist> this i the opipc with 0.2
<igraltist> just switch and stay on 0.1
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<igraltist> ok buy a better measurment device :D
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<cnxsoft> igraltist if you want something a bit more accurate and fancy, you could consider doing your own little board: http://www.cnx-software.com/2014/07/23/diy-power-measurement-board/
<cnxsoft> If you have a USB/RS232 multimeter, you can then generate pretty charts: http://www.cnx-software.com/2015/02/17/power-consumption-of-amlogic-s812-and-rockchip-rk3288-tv-boxes/
<KotCzarny> cnxsoft: i love that breadboard multimeter idea
<KotCzarny> :)
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<igraltist> cnxsoft: ok thx
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<cnxsoft> There's a limitation with that method as the multimeter is in series measuring current, and just like micro USB cables have different resistance, so do multimeter's leads
<miasma> cnxsoft: the cheap ebay power meter is probably a lot cheaper. there are really cheap psp charger wires that are compatible with opi devices. the total cost might be $6
<miasma> but they aren't super accurate
<igraltist> i will do also contact a friend near by me. i think he is a good in such stuff and maybe he can help too.
<KotCzarny> miasma: but diy is much more fun
<KotCzarny> ;)
<miasma> sure
<miasma> igraltist: so what did you use for measuring power?
<cnxsoft> The best is using a shunt resistor. Just need a bit more math...
<igraltist> a simple voltmeter
<miasma> cnxsoft: there's quite a lot of fluctuation. you can't. you need high sampling rate
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<cnxsoft> I get about 2 samples per seconds, I can get usable results to make a chart.
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<lurchi_> MoeIcenowy: H5 has (almost) the same SPI/eMMC conflict as the A64
<lurchi_> GPIO PC1 is both SPI Miso and SDC DS
<lurchi_> but H5 can also use PC4 for MISO
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<lurchi_> neither the conflict nor the alternative is reflected in the sunxi-h3-h5.dtsi
<MoeIcenowy> but which MISO is used by the BROM?
<lurchi_> MoeIcenowy: Sorry, no idea - was just reading the datasheets
<MoeIcenowy> ok
<lurchi_> is it using SPI0 or SPI1 for the BROM? - the conflict is on SPI0
<MoeIcenowy> 0
<MoeIcenowy> 1 is not bootable at all
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