Re: [PATCH V2 00/28] Enable Tegra PCIe root port features

[Thierry Reding <thierry.reding@gmail.com>]

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On Tue, Apr 23, 2019 at 02:57:57PM +0530, Manikanta Maddireddy wrote:
> 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 and T124 based Jetson-TK1 platforms.
> 
> TODO: I don't have T20 and T30 platforms to verify this series.
> Thierry has kindly agreed to verify this series on T20 and T30.

I tested this on TrimSlice and Beaver. next-20190426 boots via NFS on
both of those boards. Applying this series on top of next-20190426 works
on Beaver but does not work on TrimSlice. I'll see if I can bisect which
exact commit breaks this, but it seems like PCI accesses do work, since
I see the RTL8169 device being detected. But when the kernel tries to
send out DHCP requests, the packet transmission is never completed using
an interrupt, so maybe something interrupt related is broken.

Thierry

> V2 takes care of comments from Bjorn and Thierry.
> 
> Manikanta Maddireddy (28):
>   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: Disable PCIe interrupts 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
>   PCI: tegra: Access endpoint config only if PCIe link is up
>   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
>   dt-bindings: pci: tegra: Document reset-gpio optional prop
>   PCI: tegra: Add support for GPIO based PCIe reset
>   PCI: tegra: Change link retry log level to info
> 
>  .../bindings/pci/nvidia,tegra20-pcie.txt      |  13 +
>  arch/arm64/boot/dts/nvidia/tegra210.dtsi      |  19 +
>  drivers/pci/controller/pci-tegra.c            | 605 +++++++++++++++---
>  drivers/soc/tegra/pmc.c                       |   1 +
>  4 files changed, 558 insertions(+), 80 deletions(-)
> 
> -- 
> 2.17.1
> 

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