Re: [PATCH V2 0/5] Add support to defer core initialization

[Vidya Sagar]

On 1/23/2020 3:25 PM, Kishon Vijay Abraham I wrote:
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>
>
> Hi Vidya Sagar,
>
> On 23/01/20 2:54 pm, Vidya Sagar wrote:
> > Hi Kishon,
> > Apologies for pinging again. Could you please review this series?
> >
> > Thanks,
> > Vidya Sagar
> >
> > On 1/11/2020 5:18 PM, Vidya Sagar wrote:
> > > Hi Kishon,
> > > Could you please review this series?
> > >
> > > Also, this series depends on the following change of yours
> > > http://patchwork.ozlabs.org/patch/1109884/
> > > Whats the plan to get this merged?
>
> I've posted the endpoint improvements as a separate series
> http://lore.kernel.org/r/20191231100331.6316-1-kishon@xxxxxx
>
> I'd prefer this series gets tested by others. I'm also planning to test
> this series. Sorry for the delay. I'll test review and test this series
> early next week.
Hi Kishon,
Just wanted to know if you got time to test review my patches.

Thanks,
Vidya Sagar

> Thanks
> Kishon
>
> > > Thanks,
> > > Vidya Sagar
> > >
> > > On 1/3/20 3:37 PM, Vidya Sagar wrote:
> > > > EPC/DesignWare core endpoint subsystems assume that the core
> > > > registers are
> > > > available always for SW to initialize. But, that may not be the case
> > > > always.
> > > > For example, Tegra194 hardware has the core running on a clock that
> > > > is derived
> > > > from reference clock that is coming into the endpoint system from host.
> > > > Hence core is made available asynchronously based on when host system
> > > > is going
> > > > for enumeration of devices. To accommodate this kind of hardwares,
> > > > support is
> > > > required to defer the core initialization until the respective
> > > > platform driver
> > > > informs the EPC/DWC endpoint sub-systems that the core is indeed
> > > > available for
> > > > initiaization. This patch series is attempting to add precisely that.
> > > > This series is based on Kishon's patch that adds notification mechanism
> > > > support from EPC to EPF @ http://patchwork.ozlabs.org/patch/1109884/
> > > >
> > > > Vidya Sagar (5):
> > > >     PCI: endpoint: Add core init notifying feature
> > > >     PCI: dwc: Refactor core initialization code for EP mode
> > > >     PCI: endpoint: Add notification for core init completion
> > > >     PCI: dwc: Add API to notify core initialization completion
> > > >     PCI: pci-epf-test: Add support to defer core initialization
> > > >
> > > >    .../pci/controller/dwc/pcie-designware-ep.c   |Â 79 +++++++-----
> > > >    drivers/pci/controller/dwc/pcie-designware.h  |Â 11 ++
> > > >    drivers/pci/endpoint/functions/pci-epf-test.c | 118 ++++++++++++------
> > > >    drivers/pci/endpoint/pci-epc-core.c           |Â 19 ++-
> > > >    include/linux/pci-epc.h                       |ÂÂ 2 +
> > > >    include/linux/pci-epf.h                       |ÂÂ 5 +
> > > >    6 files changed, 164 insertions(+), 70 deletions(-)