[v2,00/11] Add support for Hikey 970 PCIe

This series add PCIe support for Kirin 970 SoC.

Patch 1 converts the Synopsys DesignWare PCIe binding documentation to
the DT schema;

Patch 2 converts the pcie-kirin DT binding to the DT schema;

Patch 3 adds some extra configuration needed to support Kirin 970.

Patch 4 were imported from Manivannan's HiKey 970 96boards tree:

   https://git.linaro.org/people/manivannan.sadhasivam/96b-common.git/commit/?h=hikey970_pcie&id=4917380ad023c62960aa0f876bd4f23cefc8729e

It contains the original port made by Linaro.

The remaining patches contain several cleanups applied on the top of
Manivann's work.

They cleanup the code and change it to use the DT bindings defined on
patch 3.

---

v2:
- DTS bindings dropped, as they depend on other DTS changes that will be
   happening at staging and ARM trees;
- Use regulator_get() for Kirin 970, instead of regulator_get_optional();
- The power supply was renamed to "pcie_vdd", in order to better match the
  schematics;
- The patch descriptions were renamed in order to match the terms used
  by other PCI patches;
- dts patches removed from this series, as they depend on other patches
  being merged via other trees.

Manivannan Sadhasivam (1):
  PCI: dwc: pcie-kirin: add support for Kirin 970 PCIe controller

Mauro Carvalho Chehab (10):
  doc: bindings: PCI: designware-pcie.txt: convert it to YAML
  doc: bindings: kirin-pcie.txt: convert it to YAML
  doc: bindings: add new parameters used by Kirin 970
  PCI: dwc: pcie-kirin: simplify error handling logic
  PCI: dwc: pcie-kirin: simplify Kirin 970 get resource logic
  PCI: dwc: pcie-kirin: place common init code altogether
  PCI: dwc: pcie-kirin: add support for a regulator
  PCI: dwc: pcie-kirin: allow using multiple reset GPIOs
  PCI: dwc: pcie-kirin: add support for clkreq GPIOs
  pci: dwc: pcie-kirin: cleanup kirin970_pcie_get_eyeparam()

 .../bindings/pci/amlogic,meson-pcie.txt       |   4 +-
 .../bindings/pci/axis,artpec6-pcie.txt        |   2 +-
 .../bindings/pci/designware-pcie.txt          |  77 --
 .../bindings/pci/fsl,imx6q-pcie.txt           |   2 +-
 .../bindings/pci/hisilicon,kirin-pcie.yaml    | 144 ++++
 .../bindings/pci/hisilicon-histb-pcie.txt     |   2 +-
 .../bindings/pci/hisilicon-pcie.txt           |   2 +-
 .../devicetree/bindings/pci/kirin-pcie.txt    |  50 --
 .../bindings/pci/layerscape-pci.txt           |   2 +-
 .../bindings/pci/nvidia,tegra194-pcie.txt     |   4 +-
 .../devicetree/bindings/pci/pci-armada8k.txt  |   2 +-
 .../devicetree/bindings/pci/pci-keystone.txt  |  10 +-
 .../devicetree/bindings/pci/pcie-al.txt       |   2 +-
 .../devicetree/bindings/pci/qcom,pcie.txt     |  14 +-
 .../bindings/pci/samsung,exynos-pcie.yaml     |   2 +-
 .../devicetree/bindings/pci/snps,pcie.yaml    | 139 ++++
 .../pci/socionext,uniphier-pcie-ep.yaml       |   2 +-
 .../devicetree/bindings/pci/ti-pci.txt        |   4 +-
 .../devicetree/bindings/pci/uniphier-pcie.txt |   2 +-
 MAINTAINERS                                   |   4 +-
 drivers/pci/controller/dwc/pcie-kirin.c       | 749 +++++++++++++++++-
 21 files changed, 1033 insertions(+), 186 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/pci/designware-pcie.txt
 create mode 100644 Documentation/devicetree/bindings/pci/hisilicon,kirin-pcie.yaml
 delete mode 100644 Documentation/devicetree/bindings/pci/kirin-pcie.txt
 create mode 100644 Documentation/devicetree/bindings/pci/snps,pcie.yaml

On Wed, 03 Feb 2021 08:01:45 +0100, Mauro Carvalho Chehab wrote:
> Convert the file into a DT schema.
> 
> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
> ---
>  .../bindings/pci/amlogic,meson-pcie.txt       |   4 +-
>  .../bindings/pci/axis,artpec6-pcie.txt        |   2 +-
>  .../bindings/pci/designware-pcie.txt          |  77 ----------
>  .../bindings/pci/fsl,imx6q-pcie.txt           |   2 +-
>  .../bindings/pci/hisilicon-histb-pcie.txt     |   2 +-
>  .../bindings/pci/hisilicon-pcie.txt           |   2 +-
>  .../devicetree/bindings/pci/kirin-pcie.txt    |   2 +-
>  .../bindings/pci/layerscape-pci.txt           |   2 +-
>  .../bindings/pci/nvidia,tegra194-pcie.txt     |   4 +-
>  .../devicetree/bindings/pci/pci-armada8k.txt  |   2 +-
>  .../devicetree/bindings/pci/pci-keystone.txt  |  10 +-
>  .../devicetree/bindings/pci/pcie-al.txt       |   2 +-
>  .../devicetree/bindings/pci/qcom,pcie.txt     |  14 +-
>  .../bindings/pci/samsung,exynos-pcie.yaml     |   2 +-
>  .../devicetree/bindings/pci/snps,pcie.yaml    | 139 ++++++++++++++++++
>  .../pci/socionext,uniphier-pcie-ep.yaml       |   2 +-
>  .../devicetree/bindings/pci/ti-pci.txt        |   4 +-
>  .../devicetree/bindings/pci/uniphier-pcie.txt |   2 +-
>  MAINTAINERS                                   |   2 +-
>  19 files changed, 169 insertions(+), 107 deletions(-)
>  delete mode 100644 Documentation/devicetree/bindings/pci/designware-pcie.txt
>  create mode 100644 Documentation/devicetree/bindings/pci/snps,pcie.yaml
> 

My bot found errors running 'make dt_binding_check' on your patch:

yamllint warnings/errors:

dtschema/dtc warnings/errors:
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/pci/snps,pcie.yaml: properties:snps,enable-cdm-check: 'oneOf' conditional failed, one must be fixed:
	'type' is a required property
	Additional properties are not allowed ('$ref' was unexpected)
	/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/pci/snps,pcie.yaml: properties:snps,enable-cdm-check: 'oneOf' conditional failed, one must be fixed:
		'enum' is a required property
		'const' is a required property
	'/schemas/types.yaml#definitions/flag' does not match 'types.yaml#/definitions/'
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/pci/snps,pcie.yaml: ignoring, error in schema: properties: snps,enable-cdm-check
warning: no schema found in file: ./Documentation/devicetree/bindings/pci/snps,pcie.yaml

See https://patchwork.ozlabs.org/patch/1435145

This check can fail if there are any dependencies. The base for a patch
series is generally the most recent rc1.

If you already ran 'make dt_binding_check' and didn't see the above
error(s), then make sure 'yamllint' is installed and dt-schema is up to
date:

pip3 install dtschema --upgrade

Please check and re-submit.