RE: [linux-audio-user] snd-hdsp+cardbus+M6807 notebook=distortion -- First good news

Daniel Ritz
2004-04-10T01:51:17Z

you can get the same output with
hexdump -v /proc/bus/pci/BUS/DEVICE
where BUS/DEVICE is the CB controller. eg. 00/09.0

about the bits:
- at 81h, from D0 to 90: this is part of the system control register. the bit
that changed is "Memory read burst enable upstream"
- at c9h, from 04 to 06: this is an undocumented test register. TI just says
reserved, EnE says test register, for the bit that changed it adds the
comment TLTEnable (default to 1). no idea what it is. it _could_ have
something to do with the cardbus latency timer...you can try to play a bit
with the latency setting after resume when this bit is set. try writing to
offset 1Bh, put in at least 40h

to change the bits under linux, use setpci (also good for reading)

about the memory read burst upstream: 2.6 kernels enable it for most of
the TI chips and since 2.6.5 also for some TI clones from EnE (incl. EnE1410).

rgds
-daniel