Re: [PATCH 0/5 v3] usb: musb: Power management support

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Mon, Feb 28, 2011 at 02:19:31PM +0530, Hema HK wrote:
> This patch series supports the retention and offmode support in the 
> idle path for musb driver using runtime pm APIs.
> 
> This is restricted to support offmode and retention only when device not
> connected.When device/cable connected with gadget driver loaded, configured
> to no idle/standby which will not allow the core transition to retention
> or off.
> 
> There is no context save/restore done by hardware for musb in OMAP3
> and OMAP4,driver has to take care of saving and restoring the context
> during offmode.
> 
> Musb has a requirement of configuring sysconfig register to force
> idle/standby mode and set the ENABLE_FORCE bit in module STANDBY register
> for retention and offmode support.
> 
> Runtime pm and hwmod frameworks will take care of configuring to force
> idle/standby when pm_runtime_put_sync is called and back to no
> idle/standby when pm_runeime_get_sync is called.
> 
> Compile, boot tested and also tested the retention in the idle path on
> OMAP3630Zoom3. And tested the global suspend/resume with offmode enabled.
> Usb basic functionality tested on OMAP4430SDP.
> 
> There is some problem with idle path offmode in mainline, I could not test
> with offmode. But I have tested this patch with resetting the controller
> in the idle path when wakeup from retention just to make sure that the
> context is lost, and restore path is working fine.

applied, thanks

-- 
balbi
--
To unsubscribe from this list: send the line "unsubscribe linux-omap" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html


[Index of Archives]     [Linux Arm (vger)]     [ARM Kernel]     [ARM MSM]     [Linux Tegra]     [Linux WPAN Networking]     [Linux Wireless Networking]     [Maemo Users]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite Trails]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux