Hi, Roger Quadros <rogerq@xxxxxx> writes: >> Roger Quadros <rogerq@xxxxxx> writes: >>> On 30/05/16 14:35, Felipe Balbi wrote: >>>> this patch implements the most basic pm_runtime >>>> support for dwc3. Whenever USB cable is dettached, >>>> then we will allow core to runtime_suspend. >>>> >>>> Runtime suspending will involve completely tearing >>>> down event buffers and require a full soft-reset of >>>> the IP. >>>> >>>> Note that a further optimization could be >>>> implemented once we decide to support hibernation, >>>> which is to allow runtime_suspend with cable >>>> connected when bus is in U3. That's subject to a >>>> separate patch, however. >>>> >>>> Tested-by: Baolin Wang <baolin.wang@xxxxxxxxxx> >>>> Signed-off-by: Felipe Balbi <felipe.balbi@xxxxxxxxxxxxxxx> >>> >>> We've discussed this offline but for the record, this patch >>> breaks DWC3 on OMAP platforms. At least on dra7-evm I could see >>> both USB host and gadget breaking. >>> >>> I will try to implement the runtime resume hooks for dwc3-omap >>> and let you know if we can make it work. >> >> cool, thanks :-) >> > > On testing branch commit [1], dwc3 breaks after > system suspend/resume on dra7-evm. > > [1] - cd45299a0f3a41f25729a523aecc0f3e6ad14d43 got some logs there, somewhere? :-) -- balbi
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