regulator/max1586: fix V3 gain calculation integer overflow

On Thu, May 28, 2009 at 10:59 AM, Mark Brown <[email protected]> wrote:
> On Thu, May 28, 2009 at 07:15:16AM +0200, Philipp Zabel wrote:
>> The V3 regulator can be configured with an external resistor
>> connected to the feedback pin (R24 in the data sheet) to
>> increase the voltage range.
>>
>> For example, hx4700 has R24 = 3.32 kOhm to achieve a maximum
>> V3 voltage of 1.55 V which is needed for 624 MHz CPU frequency.
>>
>> Signed-off-by: Philipp Zabel <[email protected]>
>
> Looks good.
>
> Acked-by: Mark Brown <[email protected]>

Thanks, but it turns out I hit a 32 bit integer overflow in
the gain calculation. I'd like to mend that with the following
patch. Now max_uV could be increased up to 4.294 V, enough to
charge LiPo cells.

Signed-off-by: Philipp Zabel <[email protected]>
Acked-by: Robert Jarzmik <[email protected]>
Signed-off-by: Liam Girdwood <[email protected]>

0 files changed, 0 insertions, 0 deletions