[PATCH v2] sdhci: Add support for hosts that are only capable of 1-bit transfers

Pierre Ossman pierre at ossman.eu
Sat Jun 20 05:21:26 EST 2009


On Thu, 18 Jun 2009 00:14:08 +0400
Anton Vorontsov <avorontsov at ru.mvista.com> wrote:

> Some hosts (hardware configurations, or particular SD/MMC slots) may
> not support 4-bit bus. For example, on MPC8569E-MDS boards we can
> switch between serial (1-bit only) and nibble (4-bit) modes, thought
> we have to disable more peripherals to work in 4-bit mode.
> 
> Along with some small core changes, this patch modifies sdhci-of
> driver, so that now it looks for "sdhci,1-bit-only" property in the
> device-tree, and if specified we enable a proper quirk.
> 
> Signed-off-by: Anton Vorontsov <avorontsov at ru.mvista.com>
> ---

Patch merged.

Rgds
-- 
     -- Pierre Ossman

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