hello,
i've got an issue on a dual head DRM/KMS test setup on sun7i A20. i'm
writing a quick report to seek advice about where to head my further
investigation.
DRM stack is quite unknown to me, looks pretty deep and so i suppose
someone with more experience can point me faster then myself wra
re
NOT the same image but two differents.
i'm wondering if one can configure DTS to get *two different /dev/fbX *in
"emulated framebuffer" or has to modify app to use the full DRM/KMS
capability for the dual-head setup.
Il giorno mercoledì 20 dicembre 2017 13:01:14 UTC+1, Andrea
er_platform_driver_init+0x0/0x28 returned
0 after 122 usecs
[0.702514] calling dumb_vga_driver_init+0x0/0x28 @ 1
[0.702670] initcall dumb_vga_driver_init+0x0/0x28 returned 0 after 140
usecs
[0.702682] calling topology_sysfs_init+0x0/0x50 @ 1
...
i fail to find a "kwnon working&
mp;tcon0_out_panel>;
arch/arm/boot/dts/sun8i-a33-sinlinx-sina33.dts: tcon0_out_panel: endpoint@0
{
arch/arm/boot/dts/sun8i-a33-sinlinx-sina33.dts: remote-endpoint =
<&panel_input>;
Il giorno mercoledì 20 dicembre 2017 13:01:14 UTC+1, Andrea Venturi ha
scritto:
>
>
hello,
i've just checked sunxi-next git kernel tree and i didn't found any DTS for
sun7i A20 tablets with LCD+HDMI support.. does anyone knows if there are
samples on other trees?
bye
andrea
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To
ts the SPI protocol, so I will try to get
> that to work instead, unless there is somebody who actually
> manged to use TDM on the A20 platform.
>
> Regards
> Per
>
> Den fredag 20 oktober 2017 kl. 13:58:45 UTC+2 skrev Andrea Venturi:
>>
>> hi,
>>
>>
hi,
it looks like your ADC is working in TDM mode and not really I2S (the wires
are the same but the frames are different as you can see..).
AFAIK the A10/A20 looks like (from datasheets) not being capable to do TDM;
instead other Allwinner SOCs like H3 shoud be HW-wise capable. never check
if
Il giorno mercoledì 11 gennaio 2017 06:46:10 UTC+1, Priit Laes ha scritto:
>
> On Tue, 2017-01-10 at 15:44 -0800, Andrea Venturi wrote:
> > hello
> >
> > i'm following the notes for booting my Orange PI PC2 from the
> > embedded SPI flash! finally..
hello
i'm following the notes for booting my Orange PI PC2 from the embedded SPI
flash! finally..
https://linux-sunxi.org/Bootable_SPI_flash
i,m using H5 branch of apritzel
uboot: https://github.com/apritzel/u-boot/tree/h5
after having enabled SPI flash support (and CONFIG_SPL_SPI_SUNXI=y su
Il giorno lunedì 12 dicembre 2016 03:20:56 UTC+1, Jonathan Liu ha scritto:
>
> Hi Andrea,
>
> On 11 December 2016 at 22:48, Andrea Venturi > wrote:
>
>> hello,
>>
>> the only issue is that, after few minutes (10 or so), the display switch
>&g
hello,
this mail just to report an experience about using the DRM driver on sun7i
(Olimex A20 SOM EVB). let me start thanking all the guys doing the
"heavylifting" for this feature/driver.
*TL;DR* i'll be very synthetic, it starts to work (you can see a picture,
then some minutes later screen
Il giorno giovedì 14 gennaio 2016 14:25:34 UTC+1, mar...@r2r.nl ha scritto:
>
> On Wednesday, January 13, 2016 at 6:49:03 AM UTC+1, Andrea Venturi wrote:
> > hello,
> >
> >
> > i've tested the experimental github branch for I2S DAI mainline linux
&g
o linux-sunxi+unsubscr...@googlegroups.com.
For more options, visit https://groups.google.com/d/optout.
>From e2f3144ba703104601150345d4d6d70f57d56add Mon Sep 17 00:00:00 2001
From: Andrea Venturi
Date: Tue, 12 Jan 2016 14:10:22 +0100
Subject: [PATCH 4/4] add entries for enabling both I2S DAI lin
o linux-sunxi+unsubscr...@googlegroups.com.
For more options, visit https://groups.google.com/d/optout.
>From e2f3144ba703104601150345d4d6d70f57d56add Mon Sep 17 00:00:00 2001
From: Andrea Venturi
Date: Tue, 12 Jan 2016 14:10:22 +0100
Subject: [PATCH 4/4] add entries for enabling both I2S DAI lin
Il giorno domenica 30 agosto 2015 13:55:14 UTC+2, Alexis Jeandet ha scritto:
>
> Hi Andrea,
>
> Indeed my song is mono, so that may explain the issue.
>
>
ok
> I also continued to investigate the code from Marcus, which if I
> understood correctly, is based on your code. I got some successful
Il giorno venerdì 28 agosto 2015 15:11:47 UTC+2, Alexis Jeandet ha scritto:
>
> Hi Andrea,
>
> Good news! I can hear some sounds :).
>
good!
> After some discussions with Marcus I've checked I2S pins with logic
> analyser, the data where at the output but really fast (340kS/s). I decided
>
Il giorno giovedì 27 agosto 2015 11:53:04 UTC+2, Alexis Jeandet ha scritto:
>
> Hi Andrea,
>
> I got slightly better results, I played with alsa and some GUI mixers like
> qashctl over ssh, now I can hear a click when playing a sound but, still no
> sound.
>
>
umhh.. i feel you are quite there.
Il giorno mercoledì 26 agosto 2015 17:45:45 UTC+2, Alexis Jeandet ha
scritto:
>
> Now I2C works :), I can see 2 sound cards in /proc/asound,
>
> I use this to switch from card 0 to 1
> sudo amixer -c 1 -- sset Master Playback 0dB
>
> I play with this:
> sudo aplay -vv someWaveFile.wav
>
>
Il giorno domenica 23 agosto 2015 13:25:06 UTC+2, Alexis Jeandet ha scritto:
>
> Hi,
>
> ...
> Then would a UDA1380 work?
>
hello,
on mainline, you can patch a kernel source code then the I2S device and the
UDA1380 codec "someway" work, at least for audio playing
you'll find the relevant patc
hi,
sorry if i top reply on my own post.. :-)
but i've been just made aware on linux-sunxi IRC channel that the watchdog
oneliner patch has been finally submitted on LKML:
https://marc.info/?l=linux-kernel&m=143620559723693&w=2
bye
On Wednesday, July 1, 2015 at 11:11:06 AM
hello,
i have been testing the "watchdog" feature on sun7i today, and it was not
triggering the reset.
i was a bit puzzled because i supposed it was a simple well working feature
but.. there's still a known bug and the relative patch has not been applied!
funny! please help me understand if it
ests, i'll try your next iteration of the linux-wip
and report the eventual patch to make the cubieboard .dts support the codec.
>
> On 03-06-15 22:03, Andrea Venturi wrote:
> > hello,
> >
> > moreover when moving control to the position where it was muted, again
>
some time ago, i started looking at EINTC, External interrupt:
http://linux-sunxi.org/External_interrupts
you can have a look at this short thread:
https://groups.google.com/d/msg/linux-sunxi/lPP1aO9tWvI/x6moRqMarlIJ
to make a long story short:
- the external interrupt feature is DIFFERENT
hello,
i started testing the 4.1rcX kernel
from https://github.com/jwrdegoede/linux-sunxi/blob/sunxi-wip/ to check how
the sunxi-codec was working on my Cubieboard A10 board.
i found some pitfall that's why i'm writing here for a feedback. BTW i know
it's been mainly developed and tested on A2
On Thursday, May 28, 2015 at 9:39:11 PM UTC+2, Stefan Monnier wrote:
>
> > There is quite a bit of documentation on the MPEG-TS part. And some
> > people have been looking into writing a driver, but lack of commonly
> > available hardware to develop on slows things down.
>
> I suspect that la
On Wednesday, May 27, 2015 at 9:13:05 AM UTC+2, Julian Calaby wrote:
>
> ...
> I'm waiting for them to run out of fruit options.
>
>
just to keep this thread REALLY out of topic, the "fruit race" remembers me
my early days (80ies..) of computing when my father bought me and my
brother a not s
On Tuesday, May 26, 2015 at 4:07:00 AM UTC+2, Julian Calaby wrote:
>
> Hi Euge,
>
> On Tue, May 26, 2015 at 3:24 AM, euge sobrino > wrote:
> > I need to decode a analog signal, but i cannot see any reference nor
> > documentation of the 4 TVIN pins of A20. I Even see cubietruck has the
> >
Hi Kevin,
as a casual "tinkerer" of Allwinner (AW) SOCs, let me tell you i appreciate
A LOT AW attitude and commitment for becoming more and more a "proper
citizen" in the free software and open source community. This release is a
step in a continuous process BUT is surely a step in the right d
On Thursday, May 7, 2015 at 10:00:04 AM UTC+2, Maxime Ripard wrote:
>
> ...
> > any advice for further investigation?
>
> There's more to it.
>
>
thanx for the quick reply!
> I don't think that ever supposed to work that way, most notably
> because it just wouldn't work with SoCs that multi
hello,
i have an issue about external interrupts, following this clear example:
http://linux-sunxi.org/External_interrupts
it works for EINT up to EINT21 in PH port, but if i try in an Olimex A20
SOM (on a A20 SOM EVB who have a schematic available showing no hints
AFAICS) an EINT in PI port (
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