diff options
| author |   Quentin Schulz <quentin.schulz@free-electrons.com> | 2017-06-08 10:07:42 +0200 |
|---|---|---|
| committer |   Bjorn Helgaas <bhelgaas@google.com> | 2017-07-02 18:43:39 -0500 |
| commit | c26ebe98a103479dae9284fe0a86a95af4a5cd46 (patch) | |
| tree | 5af5b1c5aa475d9d3c7f35e86c210c4940bc5f18 /Documentation | |
| parent | arm64: PCI: Drop DT IRQ allocation from pcibios_alloc_irq() (diff) | |
| download | linux-dev-c26ebe98a103479dae9284fe0a86a95af4a5cd46.tar.xz linux-dev-c26ebe98a103479dae9284fe0a86a95af4a5cd46.zip | |
PCI: imx6: Add regulator support
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>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.txt | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.txt b/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.txt index e3d5680875b1..cf92d3ba5a26 100644 --- a/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.txt +++ b/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.txt @@ -33,6 +33,10 @@ Optional properties: - reset-gpio-active-high: If present then the reset sequence using the GPIO specified in the "reset-gpio" property is reversed (H=reset state, L=operation state). +- vpcie-supply: Should specify the regulator in charge of PCIe port power. + The regulator will be enabled when initializing the PCIe host and + disabled either as part of the init process or when shutting down the + host. Additional required properties for imx6sx-pcie: - clock names: Must include the following additional entries: |