Re: [PATCH 1/2] ARM: tegra: Add Tegra124 HDA support

[Thierry Reding <thierry.reding-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>]

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On Tue, May 20, 2014 at 04:28:45PM -0700, Dylan Reid wrote:
> On Tue, May 20, 2014 at 2:55 PM, Stephen Warren <swarren-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org> wrote:
> > On 05/20/2014 02:37 PM, Dylan Reid wrote:
> >> On Tue, May 20, 2014 at 11:31 AM, Stephen Warren <swarren-3lzwWm7+WeqIh2JisoIxyg@public.gmane.orgg> wrote:
> >>> On 05/20/2014 12:24 PM, Stephen Warren wrote:
> >>>> On 05/19/2014 08:35 PM, Dylan Reid wrote:
> >>>>> Add a device node for the HDA controller found on Tegra124.
> > ...
> >>> Even after fixing that, I can't play audio on Venice2:
> >>>
> >>> root@localhost:~# speaker-test -Dhw:0,3 -c 2
> >>>
> >>> speaker-test 1.0.27.1
> >>>
> >>> Playback device is hw:0,3
> >>> Stream parameters are 48000Hz, S16_LE, 2 channels
> >>> Using 16 octaves of pink noise
> >>> Rate set to 48000Hz (requested 48000Hz)
> >>> Buffer size range from 64 to 16384
> >>> Period size range from 32 to 8192
> >>> Using max buffer size 16384
> >>> Periods = 4
> >>> was set period_size = 4096
> >>> was set buffer_size = 16384
> >>>  0 - Front Left
> >>> Write error: -32,Broken pipe
> >>> Write error: -32,Broken pipe
> >>> Write error: -32,Broken pipe
> >>> ^C 1 - Front Right
> >>> Time per period = 1.799791
> >>>
> >>
> >> Thanks for checking Stephen.  I'll fix the reset name.
> >>
> >> This is the state of the tree I used when I tested on Venice2 just now:
> >> * ae57dbf - (HEAD) ARM: tegra: venice2 - Enable HDA (2 minutes ago)
> >> * 6224524 - ARM: tegra: Add Tegra124 HDA support (2 minutes ago)
> >> * 468ca57 - ALSA: hda - Add driver for Tegra SoC HDA (2 minutes ago)
> >> * 928099e - ALSA: hda/hdmi - Add Nvidia Tegra124 HDMI support (2 minutes ago)
> >> * 701eac4 - clk: tegra124: Enable hda to hdmi clocks (3 minutes ago)
> >
> > Ah, I was missing that clock patch. Hopefully Peter will pick it up for
> > the Tegra clock tree soon.
> >
> > Now I have the same results as Thierry; speaker-test looks like it
> > should be working, yet I don't hear any audio from the monitor. I know
> > the monitor works, since I've used it extensively for testing GeForce
> > GPU HDMI audio.
> 
> Probably a silly question: Is it un-muted?
> amixer -c0 cset name='IEC958 Playback Switch' on

Dylan, can you provide more detail about the setup that you're running?
There have been similar issues in the past where a driver would work if
it was run on an identical upstream kernel but with a different version
of the bootloader (or a different bootloader altogether). Can you give
further details about your setup? Also perhaps providing a dmesg log or
the clock tree from /sys/kernel/debug/clk/clk_summary could help
determine the diff between a working and a non-working setup.

Thierry

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