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SubjectRe: [PATCH 3/3] mmc: sdhci-pci: allow 8-bit bus width for Intel PCH
Hello Tomoya,

Am Mittwoch, 14. März 2012, 10:17:35 schrieb Tomoya MORINAGA:
> Hi Alexander
> As a matter of interest,
> do you mean that current MMC of eg20t on Linux doesn't support 8-bit access?

We have a board with an 8-bit connected eMMC and Linux only used 4-bit wide
bus access. After some research IMO the device is only matched to the default
PCI id class

AFAICS it's the same issue with the Medfield eMMC where 8-bit bus support is
added in 0d013bcf5c272faea1f8e7a5ef3cb2e98103d5cb
This also states the default is 4-bit bus width which I saw before.

Dipl.-Inf. Alexander Stein

SYS TEC electronic GmbH
August-Bebel-Str. 29
D-07973 Greiz

Tel: +49-3661-6279-0, Fax: +49-3661-6279-99

Managing Director: Dipl.-Phys. Siegmar Schmidt
Commercial registry: Amtsgericht Jena, HRB 205563
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