Re: Re: [PATCH v2] ASoC: tas2783-sdw: add firmware download status check
Mark Brown <[email protected]>
| Newsgroups | org.alsa-project.alsa-devel,org.kernel.vger.linux-kernel,org.kernel.vger.linux-sound |
|---|---|
| Message-ID | <[email protected]> |
On Fri, Aug 14, 2026 at 03:45:20AM +0000, Xu, Baojun wrote: > > What happens if the amplifier uses power (eg, over a system suspend)? > > Though since nothing clears first_hw_init I guess there might be issues > > there anyway... > Yes, that is the purpose of this patch. It prevents the re-downloading of > pages above 0xC60000 after resuming from suspend, as the data in this region > persists across an AMP reset. Therefore, these pages should only be downloaded > during the initial power-up (when first_hw_init is false). That's only going to be the case if the suspend is a retention one that maintains power to the device. If the suspend is a deep one that cuts power to the device then I can't see how it'll keep memory contents.
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