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<KotCzarny>
hmm, i've noticed that in bootloader phase device uses ~0.15mA, but booted ~0.50, what can i power off to lower usage? (already disabled wifi and screen via a10disp)
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<tkaiser>
Still talking about Lamobo R1? If so not much. There's the broadcom switch and SATA power (might be disabled, search in the forum at bananapi.com how the community had to reverse engineer the power scheme to be able to power disks -- simple lesson: never every buy any product from SinoVoip again)
<tkaiser>
And then on Allwinner SoCs it makes a difference whether a display is detected or not. SoC temperature and consumption increase with connected display. And the 'display engine' is in enabled state the first 10 minutes after a boot (at least on H3 and A83T, haven't checked A20)
<tkaiser>
When no display is connected you see SoC temperature and consumption slighty decrease 10 minutes after boot.
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<tkaiser>
And on the R1 the crappy Wi-Fi is connected through USB, you can try to disable it completely. If power is supplied through USB (look into the fex file for a PIN definition, eg. PH6), you might disable it through sunxi-pio -m PH6'<default><default<default><0>'
<tkaiser>
If that works you can disable it in the fex file too
<KotCzarny>
hmm
<KotCzarny>
thought unloading module disabled it completely
<KotCzarny>
apparently its not
<KotCzarny>
(but it gets back 100mA so i presume it is)
<tkaiser>
Why? It's an IC that has to be powered. And it's connected through USB like a Wi-Fi dongle
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<tkaiser>
It depends on the power scheme SinoVoip used. No idea, will never ever look into something from this manufacturer.
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<KotCzarny>
would that pin disabling disable power on the whole wifi bus?
<tkaiser>
Look into the power scheme in the Wiki. Can't tell. Which sunxi-pio you can switch pins of/off. What then happens depends
<KotCzarny>
thanks for the sunxi-pio tip
<KotCzarny>
as its preferred way to disable it dynamically than recompiling kernel/uboot
<KotCzarny>
hmm, loaded module for wifi and put it up, mA didnt change, so it was apparently hostapd activity on the wifi (module itself when idle doesnt do much)
<tkaiser>
At least you can have a look whether disabling PB03 helps (you power your disk externally you said?)
<KotCzarny>
i didnt have my 3.5" hdd yet with this device (should be home in a few days), but im planning to put external power cable and not power it from r1
<KotCzarny>
pb03 is the sata power pin?
<KotCzarny>
also, apparently armbian doesnt include that tool (luckily i have compiled the sources and can add it)
<KotCzarny>
sunxi-pio -m PB03
<KotCzarny>
PB3<1><0><1><1>
<KotCzarny>
what is the correct way to disable it? sunxi-pio -m PB03<1><0><0><1> ?
<KotCzarny>
it should also save the sata port on board from wear as a side effect
<tkaiser>
Have you measured the consumption of your dual voltage PSU already? Since the few ones we tried here all had an idle consumption way higher than the whole board. Why trying to save 100mA on the board when your PSU wastes 3W when idle?
<KotCzarny>
tkaiser: i want to minimize board power to lowere temperature on the axp (not to save on electricity)
<KotCzarny>
s/temperature/wear/
<KotCzarny>
offtopic, are the raspberry pi2+ suffering from single usb connection or their ports (4) are independent?
<tkaiser>
You're able to get close to 35MB/s with a single disk connection. But can't UAS there so this will especially affect accessing disks in parallel. Then performance will degrade drastically on the RPi2
<tkaiser>
I thought about using WD's 'PiDrive' to be combined with ODROID C1+ but it seems this drive is both horribly slow and the USB-to-SATA bridge lacks features (and the product support)
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<KotCzarny>
ahm.
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<ikmaak>
the nand on the olimex lime2/cubieboard etc, will the driver be mainlined? in the kernel there is still no support for it as far as i can see?
<ikmaak>
hmm. https://linux-sunxi.org/MTD_Driver says "Since version 3.19 of the Mainline Kernel SLC NAND is supported. " " Booting: TODO: dtb, u-boot, boot0/sunxi-spl, special hw-randomization for boot partitions " why is this SLC and is it in now or not?
<ikmaak>
if i understand correctly now https://linux-sunxi.org/NAND#Background there is a non-free driver for it in some board distro's but it depends on some util "nand-part" by a chinese guy who did not specify licensing well (and used no comments), solving the issue is described as straightforward, just needing someone knowledgeable to work on it for about a day..
<ikmaak>
KotCzarny: reading :)
<ikmaak>
there are 3 patches for nand, but it is unclear to me if they are merged now, or it needs more work
<ikmaak>
or if that is all that is needed
<ikmaak>
if i understan correctly: 3 patches are proposed, but no comments on them, and there is no merge in sight? no info if this is all that is needed
<KotCzarny>
saves 20-30mA (by enablin wlan usb autosuspend)
<KotCzarny>
and another 20 by echo 'min_power' > '/sys/class/scsi_host/host0/link_power_management_policy';
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<KotCzarny>
axp chip reports nice 431mA 5042mV
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<tkaiser>
KotCzarny: fex2bin is your friend. And BTW: For such optimisation stuff you're trying to achieve I find it useful to use a bit more monitoring (being able to look at graphs and to correlate settings)
<tkaiser>
If you install RPi-Monitor simply rely on the archive I provide there. The official RPi-Monitor package contains outdated stuff for A20
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<silviop>
Hi, my ask: Tablet q8 A13 compatible, after Uboot correct start kernel, backlight switch off, but i can see with a flashlight boot text scrolling so lcd is ok but backlight is switched off.
<silviop>
uboot and kernel mainline
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<silviop>
i try to set default-.brightness-level =<100> in sun5i-q8-common.dtsi but no change
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<silviop>
in my original fex lcd is enabled by APX-1 , pwm port is PB2 and power is APX-0
<KotCzarny>
also, found sunxi-fexc and did those changes
<KotCzarny>
and while before tweaking it was showing 0.50-0.51A in idle, now it shows 0.43-0.45A
<KotCzarny>
also, temperature on axp chip dropped 1-1.5C
<KotCzarny>
hmm, i wonder how much power gmac/bcm switch uses (will test it later when i configure wifi)
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<BorgCuba>
hi, I want to modify the boot command for u-boot so I placed "uEnv.txt" with my changes into the 1st fat32 partition. This file is not recognized, I get "fail to find part named env". Do I have to rename the partition or add an extra partition?
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<BorgCuba>
is it possible to disable vsync? got a problem with glmark2-es and max 60fps for on-screen rendering
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<ssvb>
BorgCuba: what kind of hardware, kernel and graphics setup are you using?
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<ssvb>
BorgCuba: because the right answer to your question varies depending on this
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<KotCzarny>
does wpa_supplicant work with realtek 8192cu ?
<plaes>
yes
<plaes>
though, I would suggest using rtl8xxx driver in case you use mainline
<plaes>
rtl8xxxu
<KotCzarny>
nope, 3.4 for now
<plaes>
well, good luck then :)
<KotCzarny>
um
<plaes>
I never got it working there
<plaes>
but I didn't try it much either
<KotCzarny>
i might just steal the ralink 5370 from the other machine
<KotCzarny>
but wouldnt mind having this to work (just until 4.4 hits the armbian)
<ssvb>
where did you take this kernel? it is not like there is a single commonly used git repository with the 3.4 kernel for h3
<ssvb>
and do you run glmark2-es2 in framebuffer or in x11?
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<Wizzup>
I'm struggling to get spidev to work on my 4.3 kernel. All the entries in the kernel config are there, but adding it to the dt seems harder. I used the method on the wiki, adapted for the device I am using amt (cubieboard2), http://linux-sunxi.org/SPIdev#Configuring_your_DT_.28mainline.29
<Wizzup>
But the kernel gives me a trace saying: spidev spi32766.0: buggy DT: spidev listed directly in DT
<Wizzup>
Googling for this results in quite some discussion on the linux-sunxi ML, but I cannot find a conclusion nor a 'proper' example
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<BorgCuba>
ssvb, I dont remember exactly where I obtained the kernel. I run glmark-es2 on the framebuffer
<BorgCuba>
ssvb, havent you ordered a opi pc too?
<BorgCuba>
the kernel comes with r4p0 mali drivers and somehwere on the odroid forums you can download matching libs (libMali libGLES ...)
<BorgCuba>
no UMP required, it uses something called "dma-buf"