Greg, On 03/19/2015 07:48 PM, Greg Knight wrote: >> For a codec such as the SGTL5000 I would connect a clock, which is > running all >> the time. If you take a look at the driver, it enables the clock at > probe and >> leaves it running as long as the driver is loaded. > > Speaking briefly to my "electrical" colleague, he's a bit concerned > about the extra power load that a crystal oscillator might incur, while > I'm concerned about audio quality from a source like CLKOUT2. > > Is there a straightforward way we could enable the clock on-demand - > when we're communicating with the codec/mixer or actually using the > audio subsystem - while keeping it disabled when not in use? We don't > expect to be using the audio subsystem frequently. > > Worst-case we can set up a GPIO and enable/disable it as needed in > user-space - acceptable, if annoying, for our application. See my reply to Nikolay. -- Péter -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
