dt-bindings: PCI: Add bindings for Brcmstb EP voltage regulators
Add bindings for Brcmstb EP voltage regulators. A new mechanism is to be added to the Linux PCI subsystem that will allocate and turn on/off regulators. These are standard regulators -- vpcie12v, vpcie3v3, and vpcie3v3aux -- placed in the DT in the bridge node under the host bridge device. The use of a regulator property in the PCIe EP subnode such as "vpcie12v-supply" depends on a pending pullreq to the pci-bus.yaml file at https://github.com/devicetree-org/dt-schema/pull/63 Link: https://lore.kernel.org/r/20220106160332.2143-4-jim2101024@gmail.com Signed-off-by: Jim Quinlan <jim2101024@gmail.com> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Rob Herring <robh@kernel.org> Acked-by: Florian Fainelli <f.fainelli@gmail.com>
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@ -159,5 +159,24 @@ examples:
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<0x42000000 0x1 0x80000000 0x3 0x00000000 0x0 0x80000000>;
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brcm,enable-ssc;
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brcm,scb-sizes = <0x0000000080000000 0x0000000080000000>;
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/* PCIe bridge, Root Port */
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pci@0,0 {
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#address-cells = <3>;
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#size-cells = <2>;
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reg = <0x0 0x0 0x0 0x0 0x0>;
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compatible = "pciclass,0604";
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device_type = "pci";
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vpcie3v3-supply = <&vreg7>;
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ranges;
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/* PCIe endpoint */
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pci-ep@0,0 {
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assigned-addresses =
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<0x82010000 0x0 0xf8000000 0x6 0x00000000 0x0 0x2000>;
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reg = <0x0 0x0 0x0 0x0 0x0>;
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compatible = "pci14e4,1688";
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};
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};
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};
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};
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