Re: [alsa-devel] Fwd: [PATCH 1/1] SPI : spi-pxa2xx : fix spi init of WM510205 codec via ACPI (resend)

[Christian Hartmann <cornogle@xxxxxxxxxxxxxx>]

Hi,


2015-06-29 11:48 GMT+02:00 Mark Brown <broonie@xxxxxxxxxx>:
> On Mon, Jun 29, 2015 at 09:27:17AM +0200, Christian Hartmann wrote:
>
>> FYI: I can confirm that with the changed DSDT.dsl file and loading
>> the new custom DSDT table, I do not need this patch mentioned above.
>
> Are you sure?
[    0.000000] ACPI: Override [DSDT-CS-02   ], this is unsafe: tainting kernel
[    0.000000] Disabling lock debugging due to kernel taint
[    0.000000] ACPI: DSDT 0x0000000078CE2000 Logical table override,
new table: 0x00000000C0EBB470
[    0.000000] ACPI: DSDT 0x00000000C0EBB470 00A6A2 (v02 LENOVO CS-02
  00000001 INTL 20150410)
[    0.000000] ACPI: Local APIC address 0xfee00000
...
[    7.308741] pxa2xx-spi 80860F0E:00: no DMA channels available, using PIO
[    7.308837] pxa2xx-spi 80860F0E:00: registered master spi32766 (dynamic)
[    7.308978] spi spi-WM510205:00: 8333333 Hz actual, PIO
[    7.309002] spi spi-WM510205:00: setup mode 0, 8 bits/w, 8000000 Hz max --> 0
...

without the DSDT load, I must have this patch applied,
otherwise the wm5102 will not be attached.
I have checked it both and yes I am really sure since yesterday.

>
>> [    5.927801] spi-WM510205:00 supply DCVDD not found, using dummy regulator
>> [    5.928958] arizona spi-WM510205:00: Unknown device ID: ffff
>> [    5.929098] pxa2xx-spi 80860F0E:00: registered child spi-WM510205:00
>
> The above is saying that SPI I/O to the device isn't working - the
> device ID is not being read back successfully.

Ok that is the next problem that must be solved.
I have yesterday made a patchset where I have added
the enum type 5, but as you said already,
that was not needed.
All what I see the same: : Unknown device ID: ffff

So where I have to look now or what can I do to let this device id
register correctly?
I hope the baytrail machine driver is easy peasy to add, but here I
stuck at the moment.

cheers
Christian

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