linux-kernel - [PATCH v3 00/12] Add PCIe support for Tesla FSD SoC

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Message-ID: <20250811154638.95732-1-shradha.t@samsung.com>
Date: Mon, 11 Aug 2025 21:16:26 +0530
From: Shradha Todi <shradha.t@...sung.com>
To: linux-pci@...r.kernel.org, devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-samsung-soc@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-phy@...ts.infradead.org
Cc: mani@...nel.org, lpieralisi@...nel.org, kwilczynski@...nel.org,
	robh@...nel.org, bhelgaas@...gle.com, jingoohan1@...il.com,
	krzk+dt@...nel.org, conor+dt@...nel.org, alim.akhtar@...sung.com,
	vkoul@...nel.org, kishon@...nel.org, arnd@...db.de,
	m.szyprowski@...sung.com, jh80.chung@...sung.com, pankaj.dubey@...sung.com,
	Shradha Todi <shradha.t@...sung.com>
Subject: [PATCH v3 00/12] Add PCIe support for Tesla FSD SoC

FSD platform has three instances of DesignWare based PCIe IP,
one is in FSYS0 block and other two in FSYS1 block.
This patch series add required DT binding, DT file modifications,
Controller driver support and PHY driver support for the same.

To keep single PCIe controller driver and PHY driver for all Samsung
manufactured SoC, we have made changes to Exynos files to extend
support for FSD platform and other Samsung manufactured SoCs which
shall be upstreamed soon.

First a version was posted as a separate driver file:
https://lore.kernel.org/lkml/20221121105210.68596-1-shradha.t@samsung.com/
This was rejected and request was made to add the support in exynos file
itself.

Then another patchset was posted to refactor existing exynos file:
https://lore.kernel.org/lkml/649a8d88-0504-5aa9-d167-d25d394f3f26@linaro.org/T/
This requested some major changes

Taking both these reviews into consideration, I have posted a fresh
patchset where both changes to exynos framework and addition of new FSD
support is present.

v3:
 - Made separate DT bindings for Exynos5433 and FSD platforms as not
   much is shared
 - Moved all common changes to separate patch for controller and PHY
   and added FSD related changes on top
 - Removed alias method of differentiating between instances of PHY and
   added two separate compatibles.
 - Fixed smatch issues pointed out by Dan and other styling issues.

v2: https://lore.kernel.org/all/20250625165229.3458-1-shradha.t@samsung.com/ 
 - Reordered patches for removing unused MACROs and renaming them
 - Fixed all incomplete DT bindings
 - Modified PHY driver code to adopt better design
 - Removed patch to add alignment data in PCI endpoint test driver
 - Added dts changes in the patchset itself

v1: https://lore.kernel.org/lkml/20250518193152.63476-1-shradha.t@samsung.com/ 


*** BLURB HERE ***

Shradha Todi (12):
  PCI: exynos: Remove unused MACROs in exynos PCIe file
  PCI: exynos: Change macro names to exynos specific
  PCI: exynos: Reorder MACROs to maintain consistency
  PCI: exynos: Add platform device private data
  PCI: exynos: Add resource ops, soc variant and device mode
  dt-bindings: PCI: Split exynos host into two files
  dt-bindings: PCI: Add support for Tesla FSD SoC
  dt-bindings: phy: Add PCIe PHY support for FSD SoC
  phy: exynos: Add platform device private data
  phy: exynos: Add PCIe PHY support for FSD SoC
  PCI: exynos: Add support for Tesla FSD SoC
  arm64: dts: fsd: Add PCIe support for Tesla FSD SoC

 .../bindings/pci/samsung,exynos-pcie.yaml     |  70 +--
 .../bindings/pci/samsung,exynos5433-pcie.yaml |  89 +++
 .../bindings/pci/tesla,fsd-pcie-ep.yaml       |  91 +++
 .../bindings/pci/tesla,fsd-pcie.yaml          |  77 +++
 .../bindings/phy/samsung,exynos-pcie-phy.yaml |  27 +-
 arch/arm64/boot/dts/tesla/fsd-evb.dts         |  34 ++
 arch/arm64/boot/dts/tesla/fsd-pinctrl.dtsi    |  65 ++
 arch/arm64/boot/dts/tesla/fsd.dtsi            | 147 +++++
 drivers/pci/controller/dwc/pci-exynos.c       | 567 +++++++++++++++---
 drivers/phy/samsung/phy-exynos-pcie.c         | 295 ++++++++-
 10 files changed, 1300 insertions(+), 162 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/pci/samsung,exynos5433-pcie.yaml
 create mode 100644 Documentation/devicetree/bindings/pci/tesla,fsd-pcie-ep.yaml
 create mode 100644 Documentation/devicetree/bindings/pci/tesla,fsd-pcie.yaml

-- 
2.49.0