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dt-bindings: imx6q-pcie: Add "vph-supply" for PHY supply voltage

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The i.MX8MQ PCIe PHY can use either a 1.8V or a 3.3V power supply.  Add a
"vph-supply" property to indicate which regulator supplies power for the
PHY.

Link: https://lore.kernel.org/r/1622771269-13844-2-git-send-email-hongxing.zhu@nxp.com
Signed-off-by: Richard Zhu <hongxing.zhu@nxp.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Lucas Stach <l.stach@pengutronix.de>
Acked-by: Rob Herring <robh@kernel.org>
This commit is contained in:
Richard Zhu 2021-06-04 09:47:48 +08:00 committed by Bjorn Helgaas
parent 7a289a164c
commit c9d511dc84
1 changed files with 3 additions and 0 deletions
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3
Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.txt
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@ -38,6 +38,9 @@ Optional properties:
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.
- vph-supply: Should specify the regulator in charge of VPH one of the three
PCIe PHY powers. This regulator can be supplied by both 1.8v and 3.3v voltage
supplies.
Additional required properties for imx6sx-pcie:
- clock names: Must include the following additional entries: