PCI: imx6: Add regulator support

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Some boards might require to control a regulator to power the PCIe port.

Add support for an optional regulator defined in Device Tree linked in the
PCIe controller under `vpcie-supply`.  If present, the regulator will be
disabled and then enabled as part of the PCIe host initialization process
and will be disabled when shutting down.

Signed-off-by: Quentin Schulz <quentin.schulz@free-electrons.com>
[bhelgaas: use dev_err() instead of pr_err() in
imx6_pcie_assert_core_reset()]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Richard Zhu <hongxing.zhu@nxp.com>

...

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Quentin Schulz 2017-06-08 10:07:42 +02:00 • committed by Bjorn Helgaas

parent 769b461fc0

commit c26ebe98a1

2 changed files with 40 additions and 1 deletions

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4

Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.txt

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37

drivers/pci/dwc/pci-imx6.c

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