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Groups > linux.kernel > #1209951
| From | Vinod Koul <vinod.koul@intel.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH 2/6] dmaengine: mxs: support i.MX7D and deep sleep mode |
| Date | 2015-08-19 18:50 +0200 |
| Message-ID | <pZeIN-39Y-7@gated-at.bofh.it> (permalink) |
| References | <pRhDP-fB-15@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Tue, Jul 28, 2015 at 12:49:13PM -0500, Han Xu wrote:
> From: Huang Shijie <b32955@freescale.com>
>
> The patch support i.MX7D platform by adding extra DMA clock.
>
> Deep Sleep Mode(dsm) turns off the power for APBH DMA module, add
> suspend/resume function and re-init the APBH DMA during resume.
I have only 2/6, whats going on?
> +static int mxs_dma_pm_suspend(struct device *dev)
> +{
> + /*
> + * We do not save any registers here, since the gpmi will release its
> + * DMA channel.
> + */
> + return 0;
> +}
Why do we need the empty fn?
--
~Vinod
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Re: [PATCH 2/6] dmaengine: mxs: support i.MX7D and deep sleep mode Vinod Koul <vinod.koul@intel.com> - 2015-08-19 18:50 +0200
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