Re: [PATCH 0/4] Add support to defer core initialization

[Vidya Sagar]

On 11/18/2019 10:13 PM, Jingoo Han wrote:
> ïOn 11/18/19, 1:55 AM, Vidya Sagar wrote:
> > On 11/13/2019 2:38 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 (4):
> > >     PCI: dwc: Add new feature to skip core initialization
> > >     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   |  79 +++++++-----
> > >    drivers/pci/controller/dwc/pcie-designware.h  |  11 ++
> > >    drivers/pci/endpoint/functions/pci-epf-test.c | 114 ++++++++++++------
> > >    drivers/pci/endpoint/pci-epc-core.c           |  19 ++-
> > >    include/linux/pci-epc.h                       |   2 +
> > >    include/linux/pci-epf.h                       |   5 +
> > >    6 files changed, 164 insertions(+), 66 deletions(-)
> >
> > Hi Kishon / Gustavo / Jingoo,
> > Could you please take a look at this patch series?
>
> You need a Ack from Kishon, because he made EP code.
Hi Kishon,
Could you please find time to review this series?

- Vidya Sagar
> > - Vidya Sagar