From 418970983059aa06302ddd5ca76d441973b537c1 Mon Sep 17 00:00:00 2001 From: Richard Zhu Date: Thu, 11 Dec 2025 14:48:18 +0800 Subject: [PATCH] dt-bindings: PCI: dwc: Add external reference clock input Add external reference clock input "extref" for a reference clock that comes from external crystal oscillator. Signed-off-by: Richard Zhu Signed-off-by: Manivannan Sadhasivam Reviewed-by: Frank Li Acked-by: Conor Dooley Link: https://patch.msgid.link/20251211064821.2707001-2-hongxing.zhu@nxp.com --- .../devicetree/bindings/pci/snps,dw-pcie-common.yaml | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/Documentation/devicetree/bindings/pci/snps,dw-pcie-common.yaml b/Documentation/devicetree/bindings/pci/snps,dw-pcie-common.yaml index 6339a76499b21..2c4dc04f9984f 100644 --- a/Documentation/devicetree/bindings/pci/snps,dw-pcie-common.yaml +++ b/Documentation/devicetree/bindings/pci/snps,dw-pcie-common.yaml @@ -105,6 +105,12 @@ properties: define it with this name (for instance pipe, core and aux can be connected to a single source of the periodic signal). const: ref + - description: + Some dwc wrappers (like i.MX95 PCIes) have two reference clock + inputs, one from an internal PLL, the other from an off-chip crystal + oscillator. If present, 'extref' refers to a reference clock from + an external oscillator. + const: extref - description: Clock for the PHY registers interface. Originally this is a PHY-viewport-based interface, but some platform may have -- 2.47.3