MPC5200 I2S driver
wd at denx.de
Wed Apr 13 09:40:05 EST 2005
In message <22.214.171.124.1.20050412173010.02adaaa0 at mail.int.acdstar.com> you wrote:
> Humm, any pointers on writing our own driver then then? Digging through
> the source for other drivers, bestcomm seems to be a real house of
> cards. We just want simple audio output capability. No need to make it
> work with the standard Linux/OSS sound API.
User the i2s_ring.c driver as model.
> Where can we keep track of the eratta/bugs in bestcomm? Browsing through
> the mailing list, I've found references that:
> IDE and Ethernet DMA can't work at the same time
> I2S TX and RX DMA can't work at the same time
> AC-97 is terminally broken (no way to handle the slot tags properly
> for variable sampling rates)
> Are these all still true?
This probably depends on your definition of "can't work". If you
allow for a failure every now and then under certain (more or less
exotic) usage conditions ... ;-)
Software Engineering: Embedded and Realtime Systems, Embedded Linux
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
I have been over into the future, and it works.
- Lincoln Steffens in _Letters_ (1938) vol. 1, p. 463
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