From mboxrd@z Thu Jan 1 00:00:00 1970 From: broonie@opensource.wolfsonmicro.com (Mark Brown) Date: Mon, 5 Mar 2012 11:52:10 +0000 Subject: [PATCH 2/2] mmc: sdhci-s3c: Enable runtime power management In-Reply-To: <4F549A0A.5020402@samsung.com> References: <4F51697C.40408@samsung.com> <1330735602-22409-1-git-send-email-broonie@opensource.wolfsonmicro.com> <1330735602-22409-2-git-send-email-broonie@opensource.wolfsonmicro.com> <4F549A0A.5020402@samsung.com> Message-ID: <20120305115209.GA3224@opensource.wolfsonmicro.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Mon, Mar 05, 2012 at 07:48:42PM +0900, Jaehoon Chung wrote: > On 03/03/2012 09:46 AM, Mark Brown wrote: > > + pm_runtime_set_autosuspend_delay(&pdev->dev, 50); > Could you explain why use 50ms? It's essentially a random number, some other devices use the same one. We're just trying to avoid suspending between back to back requests. > > + pm_runtime_use_autosuspend(&pdev->dev); > > + pm_suspend_ignore_children(&pdev->dev, 1); > Is there reason that ignore_children use to set the true? So that we can suspend the host without having to have the MMC card suspended (the host suspend is not visible to the card). -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 836 bytes Desc: Digital signature URL: