RFC: PCI SD host controller driver & mmc/mmcsd modules improvements

[M. Warner Losh]

In message: <49131109.2020601 at FreeBSD.org>
            Alexander Motin <mav at FreeBSD.org> writes:
: Lars Engels wrote:
: > 1. How can I tune the PCI configuration? With pciconf -w or so?
: 
: Yes. `pciconf -r -b device addr` to read and `pciconf -w -b device addr
: value` to write.

I have changes that almost make my TI card do it.

: > 2. Unfortunately the sysctl did not change a thing with regard to the
: > Card reader.
: 
: Have you added it to the loader.conf and rebooted?
: 
: > 3. I added the chip ID and the second device is now recognized as a
: > sdhci device but still does not see any card inserted:
: > 
: > Nov  6 16:32:20 NB0117232 kernel: sdhci1: Hardware doesn't specify base
: > clock frequency.
: > Nov  6 16:32:20 NB0117232 kernel: sdhci1: Hardware doesn't specify
: > timeout clock frequency.
: > Nov  6 16:32:20 NB0117232 kernel: sdhci1: Hardware doesn't report any
: > support voltages.
: 
: Looks like it is not enough compatible, or even not compatible.

Chances are good that you need to the workaround to turn on these
things.

Warner