On Tue, Jun 29, 2021 at 9:47 PM Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxx> wrote: > > Hello, > > This series adds support for Qualcomm PCIe Endpoint controller found > in platforms like SDX55. The Endpoint controller is based on the designware > core with additional Qualcomm wrappers around the core. > > The driver is added separately unlike other Designware based drivers that > combine RC and EP in a single driver. This is done to avoid complexity and > to maintain this driver autonomously. > > The driver has been validated with an out of tree MHI function driver on > SDX55 based Telit FN980 EVB connected to x86 host machine over PCIe. > > Thanks, > Mani > > Changes in v5: > > * Removed the DBI register settings that are not needed > * Used the standard definitions available in pci_regs.h > * Added defines for all the register fields > * Removed the left over code from previous iteration > > Changes in v4: > > * Removed the active_config settings needed for IPA integration > * Switched to writel for couple of relaxed versions that sneaked in I thought we resolved this discussion. Use _relaxed variants unless you need the stronger ones. Rob > > Changes in v3: > > * Lot of minor cleanups to the driver patch based on review from Bjorn and Stan. > * Noticeable changes are: > - Got rid of _relaxed calls and used readl/writel > - Got rid of separate TCSR memory region and used syscon for getting the > register offsets for Perst registers > - Changed the wake gpio handling logic > - Added remove() callback and removed "suppress_bind_attrs" > - stop_link() callback now just disables PERST IRQ > * Added MMIO region and doorbell interrupt to the binding > * Added logic to write MMIO physicall address to MHI base address as it is > for the function driver to work > > Changes in v2: > > * Addressed the comments from Rob on bindings patch > * Modified the driver as per binding change > * Fixed the warnings reported by Kbuild bot > * Removed the PERST# "enable_irq" call from probe() > > Manivannan Sadhasivam (3): > dt-bindings: pci: Add devicetree binding for Qualcomm PCIe EP > controller > PCI: dwc: Add Qualcomm PCIe Endpoint controller driver > MAINTAINERS: Add entry for Qualcomm PCIe Endpoint driver and binding > > .../devicetree/bindings/pci/qcom,pcie-ep.yaml | 160 ++++ > MAINTAINERS | 10 +- > drivers/pci/controller/dwc/Kconfig | 10 + > drivers/pci/controller/dwc/Makefile | 1 + > drivers/pci/controller/dwc/pcie-qcom-ep.c | 742 ++++++++++++++++++ > 5 files changed, 922 insertions(+), 1 deletion(-) > create mode 100644 Documentation/devicetree/bindings/pci/qcom,pcie-ep.yaml > create mode 100644 drivers/pci/controller/dwc/pcie-qcom-ep.c > > -- > 2.25.1 >
