On 01/05/16 21:22, Fabio Estevam wrote:
On Sun, May 1, 2016 at 3:59 PM, Petr Kulhavy <brain@xxxxxxxx> wrote:
I have not tried setting the bit 20 of the GPR1 register. How would that be
set?
If you have memtool installed in your rootfs:
./memtool -32 20E4004=0F560005
You can do this via bootloader prompt or via devmem2 in the Linux prompt.
Without this MCLK will not be out.
Thanks, I'll check that out.
Both the 3.x and 4.1 work for me. However you need to set the headphone
volume to non-zero and especially the pcm output mixer (unmute),
otherwise the audio path is not routed through and the codec is switched off
due to power saving (and generates no bclk and lrclk).
This confused me as well, but after setting the mixer playback stasrts
working with the Freescale kernel.
I was putting the volume to a suitable value, but didn't touch PCM output mixer.
I see in alsamixer: "PCM Playback -6dB [Off]", but it does not allow
me to change this setting though.
The controls to unmute are:
Left Output Mixer PCM [Off]
Right Output Mixer PCM [Off]
Petr
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