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dt-bindings: PCI: ti,j721e-pci-host: Add ACSPCIE proxy control property

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Add the "ti,syscon-acspcie-proxy-ctrl" device-tree property which is
used to obtain a reference to the ACSPCIE Proxy Control register along
with the details of the PAD IO Buffer output enable bits.

The ACSPCIE Proxy Control register is used to drive the reference clock
for the PCIe Endpoint device via the PAD IO Buffers of the ACSPCIE module.
The ACSPCIE module can be used as an alternative to either an on-board
clock generator or an external clock generator for providing the reference
clock to the PCIe Endpoint device.

Link: https://lore.kernel.org/linux-pci/20240829105316.1483684-2-s-vadapalli@ti.com
Signed-off-by: Siddharth Vadapalli <s-vadapalli@ti.com>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
This commit is contained in:
Siddharth Vadapalli 2024-08-29 16:23:15 +05:30 committed by Krzysztof Wilczyński
parent 8400291e28
commit cb08c3a32b
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1 changed files with 10 additions and 0 deletions
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Documentation/devicetree/bindings/pci/ti,j721e-pci-host.yaml
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@ -38,6 +38,16 @@ properties:
- const: reg
- const: cfg
ti,syscon-acspcie-proxy-ctrl:
$ref: /schemas/types.yaml#/definitions/phandle-array
items:
- items:
- description: Phandle to the ACSPCIE Proxy Control Register
- description: Bitmask corresponding to the PAD IO Buffer
output enable fields (Active Low).
description: Specifier for enabling the ACSPCIE PAD outputs to drive
the reference clock to the Endpoint device.
ti,syscon-pcie-ctrl:
$ref: /schemas/types.yaml#/definitions/phandle-array
items: