Re: [PATCH v2] i2c: enable i2c device to suspend/resume asynchronously
From: Fu, Zhonghui
Date: Mon Nov 23 2015 - 01:25:14 EST
On 10/20/2015 11:02 PM, Wolfram Sang wrote:
> On Thu, Sep 24, 2015 at 02:26:23PM +0800, Fu, Zhonghui wrote:
>> Now, PM core supports asynchronous suspend/resume mode for devices
>> during system suspend/resume, and the power state transition of one
>> device may be completed in separate kernel thread. PM core ensures
>> all power state transition timing dependency between devices. This
>> patch enables i2c device to suspend/resume asynchronously. This will
>> take advantage of multicore and improve system suspend/resume speed.
>> Signed-off-by: Zhonghui Fu <zhonghui.fu@xxxxxxxxxxxxxxx>
> Does it always work when say a PMIC or clock controller is connected to
> the I2C bus?
Sorry for missing this mail.
Yes, it does not care about what device. The sole difference of asynchronous suspend/resume mode is that the suspend/resume operation of one device is carried out in a separate kernel thread, and PM core ensures all related dependency.
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