On 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. > - Vidya Sagar
