[V5,00/27] Enable Tegra PCIe root port features

Message

Manikanta Maddireddy June 17, 2019, 5:39 p.m. UTC

This series of patches adds,
- Tegra root port features like Gen2, AER, etc
- Power and perf optimizations
- Fixes like "power up sequence", "dev_err prints", etc

This series of patches are tested on Tegra186 based Jetson-TX2, Tegra210
based Jetson-TX1, T124 based Jetson-TK1, Tegra20 and Tegra30 platforms.

Changes from v4 to v5:
 - Patch [V4, 4/28]: Added blank line before block style comment
 - Patch [V4, 22/28]: "Access endpoint config only if PCIe link is up"
patch is dropped
 - Patch [V4, 27/28]:
* Updated reset gpio toggle logic to reflect active low usage
* Replaced kasprintf() with devm_kasprintf()
* Updated commit message with more information.

Changes from v3 to v4:
 - Patch [V3,27/29] is dropped
 - Patch [V3,28/29]: devm_gpiod_get_from_of_node() is directly used in
   pci-tegra driver instead of of_get_pci* wrapper function defined in
   Patch [V3,27/29].

Manikanta Maddireddy (27):
  soc/tegra: pmc: Export tegra_powergate_power_on()
  PCI: tegra: Handle failure cases in tegra_pcie_power_on()
  PCI: tegra: Rearrange Tegra PCIe driver functions
  PCI: tegra: Mask AFI_INTR in runtime suspend
  PCI: tegra: Fix PCIe host power up sequence
  PCI: tegra: Add PCIe Gen2 link speed support
  PCI: tegra: Advertise PCIe Advanced Error Reporting (AER) capability
  PCI: tegra: Program UPHY electrical settings for Tegra210
  PCI: tegra: Enable opportunistic UpdateFC and ACK
  PCI: tegra: Disable AFI dynamic clock gating
  PCI: tegra: Process pending DLL transactions before entering L1 or L2
  PCI: tegra: Enable PCIe xclk clock clamping
  PCI: tegra: Increase the deskew retry time
  PCI: tegra: Add SW fixup for RAW violations
  PCI: tegra: Update flow control timer frequency in Tegra210
  PCI: tegra: Set target speed as Gen1 before starting LTSSM
  PCI: tegra: Fix PLLE power down issue due to CLKREQ# signal
  PCI: tegra: Program AFI_CACHE* registers only for Tegra20
  PCI: tegra: Change PRSNT_SENSE IRQ log to debug
  PCI: tegra: Use legacy IRQ for port service drivers
  PCI: tegra: Add AFI_PEX2_CTRL reg offset as part of soc struct
  dt-bindings: pci: tegra: Document PCIe DPD pinctrl optional prop
  arm64: tegra: Add PEX DPD states as pinctrl properties
  PCI: tegra: Put PEX CLK & BIAS pads in DPD mode
  PCI: Add DT binding for "reset-gpios" property
  PCI: tegra: Add support for GPIO based PERST#
  PCI: tegra: Change link retry log level to debug

 .../bindings/pci/nvidia,tegra20-pcie.txt      |   8 +
 Documentation/devicetree/bindings/pci/pci.txt |   3 +
 arch/arm64/boot/dts/nvidia/tegra210.dtsi      |  19 +
 drivers/pci/controller/pci-tegra.c            | 582 +++++++++++++++---
 drivers/soc/tegra/pmc.c                       |   1 +
 5 files changed, 533 insertions(+), 80 deletions(-)