From: Jaehoon Chung <jh80.chung@samsung.com>
To: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: Jaehoon Chung <jh80.chung@samsung.com>,
linux-samsung-soc@vger.kernel.org,
Kukjin Kim <kgene.kim@samsung.com>,
linux-mmc@vger.kernel.org, Chris Ball <cjb@laptop.org>,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH 2/2] mmc: sdhci-s3c: Enable runtime power management
Date: Tue, 06 Mar 2012 15:40:07 +0900 [thread overview]
Message-ID: <4F55B147.6010304@samsung.com> (raw)
In-Reply-To: <20120305115209.GA3224@opensource.wolfsonmicro.com>
Acked-by: Jaehoon Chung <jh80.chung@samsung.com>
On 03/05/2012 08:52 PM, Mark Brown wrote:
> 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).
>
>
>
> _______________________________________________
> linux-arm-kernel mailing list
> linux-arm-kernel@lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
WARNING: multiple messages have this Message-ID (diff)
From: jh80.chung@samsung.com (Jaehoon Chung)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 2/2] mmc: sdhci-s3c: Enable runtime power management
Date: Tue, 06 Mar 2012 15:40:07 +0900 [thread overview]
Message-ID: <4F55B147.6010304@samsung.com> (raw)
In-Reply-To: <20120305115209.GA3224@opensource.wolfsonmicro.com>
Acked-by: Jaehoon Chung <jh80.chung@samsung.com>
On 03/05/2012 08:52 PM, Mark Brown wrote:
> 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).
>
>
>
> _______________________________________________
> linux-arm-kernel mailing list
> linux-arm-kernel at lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2012-03-06 6:40 UTC|newest]
Thread overview: 98+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-31 17:56 [PATCH v3 0/6] mmc: sdhci-s3c: Rework platform data and add device tree support Thomas Abraham
2012-01-31 17:56 ` Thomas Abraham
2012-01-31 17:56 ` [PATCH v3 1/6] mmc: sdhci-s3c: Remove usage of clk_type member in platform data Thomas Abraham
2012-01-31 17:56 ` Thomas Abraham
2012-01-31 17:56 ` [PATCH v3 2/6] arm: exynos4: use 'exynos4-sdhci' as device name for sdhci controllers Thomas Abraham
2012-01-31 17:56 ` Thomas Abraham
2012-01-31 17:56 ` [PATCH v3 3/6] arm: samsung: remove all uses of clk_type member in sdhci platform data Thomas Abraham
2012-01-31 17:56 ` Thomas Abraham
2012-01-31 17:56 ` [PATCH v3 4/6] mmc: sdhci-s3c: derive transfer width host capability from max_width in " Thomas Abraham
2012-01-31 17:56 ` Thomas Abraham
2012-01-31 19:12 ` Sergei Shtylyov
2012-01-31 19:12 ` Sergei Shtylyov
2012-01-31 17:56 ` [PATCH v3 5/6] mmc: sdhci-s3c: Keep a copy of platform data and use it Thomas Abraham
2012-01-31 17:56 ` Thomas Abraham
2012-01-31 17:56 ` [PATCH v3 6/6] mmc: sdhci-s3c: Add device tree support Thomas Abraham
2012-01-31 17:56 ` Thomas Abraham
2012-01-31 20:08 ` Grant Likely
2012-01-31 20:08 ` Grant Likely
2012-02-01 18:21 ` Karol Lewandowski
2012-02-01 18:21 ` Karol Lewandowski
2012-03-27 16:15 ` Arnd Bergmann
2012-03-27 16:15 ` Arnd Bergmann
2012-03-27 16:19 ` Arnd Bergmann
2012-03-27 16:19 ` Arnd Bergmann
2012-03-30 6:33 ` Viresh Kumar
2012-03-30 6:33 ` Viresh Kumar
2012-03-30 11:36 ` Arnd Bergmann
2012-03-30 11:36 ` Arnd Bergmann
2012-03-30 15:48 ` Stephen Warren
2012-03-30 15:48 ` Stephen Warren
2012-03-30 18:45 ` Arnd Bergmann
2012-03-30 18:45 ` Arnd Bergmann
[not found] ` <201203301845.07534.arnd-r2nGTMty4D4@public.gmane.org>
2012-04-01 11:29 ` Mark Brown
2012-04-01 11:29 ` Mark Brown
2012-05-13 4:14 ` [PATCH v2] mmc: dt: Consolidate DT bindings Chris Ball
2012-05-13 4:14 ` Chris Ball
2012-05-13 19:29 ` Guennadi Liakhovetski
2012-05-13 19:29 ` Guennadi Liakhovetski
[not found] ` <871umou38f.fsf_-_-2X9k7bc8m7Mdnm+yROfE0A@public.gmane.org>
2012-05-13 19:46 ` Arnd Bergmann
2012-05-13 19:46 ` Arnd Bergmann
2012-05-13 20:10 ` Chris Ball
2012-05-13 20:10 ` Chris Ball
2012-05-14 19:53 ` Arnd Bergmann
2012-05-14 19:53 ` Arnd Bergmann
2012-04-09 14:48 ` [PATCH v3 6/6] mmc: sdhci-s3c: Add device tree support Chris Ball
2012-04-09 14:48 ` Chris Ball
2012-04-10 21:37 ` Chris Ball
2012-04-10 21:37 ` Chris Ball
2012-02-09 13:42 ` [PATCH v3 0/6] mmc: sdhci-s3c: Rework platform data and add " Kukjin Kim
2012-02-09 13:42 ` Kukjin Kim
2012-02-11 21:37 ` Chris Ball
2012-02-11 21:37 ` Chris Ball
2012-02-16 13:04 ` Kukjin Kim
2012-02-16 13:04 ` Kukjin Kim
2012-02-16 13:08 ` Chris Ball
2012-02-16 13:08 ` Chris Ball
2012-02-21 11:37 ` Kukjin Kim
2012-02-21 11:37 ` Kukjin Kim
2012-02-21 13:17 ` Chris Ball
2012-02-21 13:17 ` Chris Ball
2012-02-22 12:58 ` Mark Brown
2012-02-22 12:58 ` Mark Brown
2012-03-02 20:40 ` Chris Ball
2012-03-02 20:40 ` Chris Ball
2012-03-03 0:44 ` Kukjin Kim
2012-03-03 0:44 ` Kukjin Kim
2012-03-03 0:46 ` [PATCH 1/2] mmc: sdhci-s3c: Use CONFIG_PM_SLEEP to ifdef system suspend Mark Brown
2012-03-03 0:46 ` Mark Brown
2012-03-03 0:46 ` [PATCH 2/2] mmc: sdhci-s3c: Enable runtime power management Mark Brown
2012-03-03 0:46 ` Mark Brown
2012-03-05 10:48 ` Jaehoon Chung
2012-03-05 10:48 ` Jaehoon Chung
2012-03-05 11:52 ` Mark Brown
2012-03-05 11:52 ` Mark Brown
2012-03-06 6:40 ` Jaehoon Chung [this message]
2012-03-06 6:40 ` Jaehoon Chung
2012-03-09 4:57 ` Chris Ball
2012-03-09 4:57 ` Chris Ball
2012-03-09 5:08 ` Chris Ball
2012-03-09 5:08 ` Chris Ball
2012-03-09 12:26 ` Mark Brown
2012-03-09 12:26 ` Mark Brown
2012-03-05 10:24 ` [PATCH 1/2] mmc: sdhci-s3c: Use CONFIG_PM_SLEEP to ifdef system suspend Jaehoon Chung
2012-03-05 10:24 ` Jaehoon Chung
2012-03-09 4:56 ` Chris Ball
2012-03-09 4:56 ` Chris Ball
2012-03-27 15:50 ` [PATCH v3 0/6] mmc: sdhci-s3c: Rework platform data and add device tree support Chris Ball
2012-03-27 15:50 ` Chris Ball
2012-03-28 9:54 ` Mark Brown
2012-03-28 9:54 ` Mark Brown
2012-03-29 3:15 ` Kukjin Kim
2012-03-29 3:15 ` Kukjin Kim
2012-04-01 1:12 ` Chris Ball
2012-04-01 1:12 ` Chris Ball
2012-04-02 19:08 ` Kukjin Kim
2012-04-02 19:08 ` Kukjin Kim
-- strict thread matches above, loose matches on Subject: below --
2012-02-15 18:15 [PATCH 1/2] mmc: sdhci-s3c: Use CONFIG_PM_SLEEP to ifdef system suspend Mark Brown
2012-02-15 18:15 ` [PATCH 2/2] mmc: sdhci-s3c: Enable runtime power management Mark Brown
2011-12-30 2:24 [PATCH 1/2] mmc: sdhci-s3c: Use CONFIG_PM_SLEEP to ifdef system suspend Mark Brown
2011-12-30 2:24 ` [PATCH 2/2] mmc: sdhci-s3c: Enable runtime power management Mark Brown
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