Hi,
Am 05.05.2010 um 02:32 schrieb Graham Gower:
On 4 May 2010 23:23, Dr. H. Nikolaus Schaller <h...@computer.org>
wrote:
Sound?
Ruben told that it may crash the kernel. I have not yet tried
anything with
sound. But I know some spurious write errors to I2C address 0x13.
That may
I found that these errors come from the ak4642en driver.
Ruben has reported (http://projects.kwaak.net/twiki/bin/view/Epc700/KernelPort26Compiling
) he has modified the /sound/oss/ak4642en.c to make it working
(partially).
When looking into the code, I can see that the driver is
unsuccessfully trying to access a i2c device at bus address 0x13.
According to the data sheet the ak4642 address can be programmed
between 0x12 and 0x13 by an external pin. Nevertheless, i2cdetect
doesn't report a response and i2cget returns a read error (at least on
my device - but I can't exclude a hardware defect).
How is this related to the jz_ac97 driver?
have something to do with the audio codec - but may also be something
completely different.
The sounds uses the ac97 bus; completely separate from the i2c
controller. Sound has been pretty buggy and I still see weird
unreliability for certain cases. Attached is a cleaned up driver for
2.6.24.
-Graham
<jz_ac97.c>
BR,
Nikolaus
_______________________________________________
Mipsbook-devel mailing list
Mipsbook-devel@linuxtogo.org
http://lists.linuxtogo.org/cgi-bin/mailman/listinfo/mipsbook-devel
