linux-kernel - [PATCH v6 0/3] PCI: designware-ep: Fix DBI access before core init

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Message-Id: <20231020064320.5302-1-manivannan.sadhasivam@linaro.org>
Date:   Fri, 20 Oct 2023 12:13:17 +0530
From:   Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
To:     jingoohan1@...il.com, gustavo.pimentel@...opsys.com,
        lpieralisi@...nel.org, robh@...nel.org, kw@...ux.com,
        bhelgaas@...gle.com
Cc:     linux-pci@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        linux-kernel@...r.kernel.org, vidyas@...dia.com,
        Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
Subject: [PATCH v6 0/3] PCI: designware-ep: Fix DBI access before core init

Hello,

This series is the continuation of previous work by Vidya Sagar [1] to fix the
issues related to accessing DBI register space before completing the core
initialization in some EP platforms like Tegra194/234 and Qcom SM8450.

Since Vidya is busy with other work and didn't respond to my queries [2], I took
the previous series, rebased it on top of pci/next (6e2fca71e187), removed
ep_init_late() callback as it is no longer necessary and posted v6.

I've also kept the Ack given by Jingoo Han for patch 1/3 as there is no drastic
change.

Testing
=======

I've tested the series on Qcom SM8450 based dev board. I also expect it to work
on Tegra platforms as well but it'd be good if Vidya or someone could test it.

- Mani

[1] https://lore.kernel.org/linux-pci/20221013175712.7539-1-vidyas@nvidia.com/
[2] https://lore.kernel.org/linux-pci/20230825123843.GD6005@thinkpad/

Changes in v6:

- Rebased on top of pci/next (6e2fca71e187)
- removed ep_init_late() callback as it is no longer necessary

For previous changelog, please refer [1].

Vidya Sagar (3):
  PCI: designware-ep: Fix DBI access before core init
  PCI: qcom-ep: Refactor EP initialization completion
  PCI: tegra194: Refactor EP initialization completion

 .../pci/controller/dwc/pcie-designware-ep.c   | 142 +++++++++++-------
 drivers/pci/controller/dwc/pcie-designware.h  |   9 +-
 drivers/pci/controller/dwc/pcie-qcom-ep.c     |   4 +-
 drivers/pci/controller/dwc/pcie-tegra194.c    |   4 +-
 4 files changed, 89 insertions(+), 70 deletions(-)

base-commit: 6e2fca71e187932281c7bf4faed1b40e6d9627d6
-- 
2.25.1