Re: [PATCH 5/5] SDIO: put active devices into 1-bit mode during suspend

David Vrabel
2010-02-10T16:50:47Z

Chris Ball wrote:
> Hi David,
>
> > I couldn't find anything in the SDIO specification (you know the
> > section number?). Part A2 has a requirement that the controller
> > be placed into 1-bit mode but this doesn't mean that the card has
> > to be.
>
> I think it's part E1 section 8, and does specify that it's necessary
> for both host and card.

Found it now, thanks. The patch is fine as is.

(FWIW, my confusion arose because CSR chips can assert interrupts in
4-bit mode even without SDCLK.)

David
--
David Vrabel, Senior Software Engineer, Drivers
CSR, Churchill House, Cambridge Business Park, Tel: +44 (0)1223 692562
Cowley Road, Cambridge, CB4 0WZ http://www.csr.com/

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