Re: [PATCH v4 05/15] mmc: sd: add support for uhs bus speed mode selection

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Hi,

On Thu, May 05 2011, Arindam Nath wrote:
> This patch adds support for setting UHS-I bus speed mode during UHS-I
> initialization procedure. Since both the host and card can support
> more than one bus speed, we select the highest speed based on both of
> their capabilities. First we set the bus speed mode for the card using
> CMD6 mode 1, and then we program the host controller to support the
> required speed mode. We also set High Speed Enable in case one of the
> UHS-I modes is selected. We take care to reset SD clock before setting
> UHS mode in the Host Control2 register, and then re-enable it as per
> the Host Controller spec v3.00. We then set the clock frequency for
> the UHS-I mode selected.
>
> Signed-off-by: Arindam Nath <arindam.nath@xxxxxxx>
> Reviewed-by: Philip Rakity <prakity@xxxxxxxxxxx>
> Tested-by: Philip Rakity <prakity@xxxxxxxxxxx>

Thanks, pushed to mmc-next for .40.

- Chris.
-- 
Chris Ball   <cjb@xxxxxxxxxx>   <http://printf.net/>
One Laptop Per Child
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