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authorQuentin Schulz <quentin.schulz@free-electrons.com>2017-06-08 10:07:42 +0200
committerBjorn Helgaas <bhelgaas@google.com>2017-07-02 18:43:39 -0500
commitc26ebe98a103479dae9284fe0a86a95af4a5cd46 (patch)
tree5af5b1c5aa475d9d3c7f35e86c210c4940bc5f18 /Documentation/devicetree
parent769b461fc0c0451bacf75826d5830fc07c5a57e4 (diff)
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/devicetree')
-rw-r--r--Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.txt4
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: