linux-kernel - [PATCH 1/4] dt-bindings: PCI: ti,j721e: Add binding to represent refclk to the connector

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Message-ID: <20201224115658.2795-2-kishon@ti.com>
Date:   Thu, 24 Dec 2020 17:26:55 +0530
From:   Kishon Vijay Abraham I <kishon@...com>
To:     Kishon Vijay Abraham I <kishon@...com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Rob Herring <robh+dt@...nel.org>,
        Tom Joseph <tjoseph@...ence.com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>
CC:     <linux-pci@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <linux-omap@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>
Subject: [PATCH 1/4] dt-bindings: PCI: ti,j721e: Add binding to represent refclk to the connector

Add binding to represent refclk to the PCIe connector.

Signed-off-by: Kishon Vijay Abraham I <kishon@...com>
---
 .../bindings/pci/ti,j721e-pci-host.yaml         | 17 +++++++++++++----
 1 file changed, 13 insertions(+), 4 deletions(-)

diff --git a/Documentation/devicetree/bindings/pci/ti,j721e-pci-host.yaml b/Documentation/devicetree/bindings/pci/ti,j721e-pci-host.yaml
index 0880a613ece6..7607018a115b 100644
--- a/Documentation/devicetree/bindings/pci/ti,j721e-pci-host.yaml
+++ b/Documentation/devicetree/bindings/pci/ti,j721e-pci-host.yaml
@@ -46,12 +46,21 @@ properties:
     maxItems: 1
 
   clocks:
-    maxItems: 1
-    description: clock-specifier to represent input to the PCIe
+    minItems: 1
+    maxItems: 2
+    description: clock-specifier to represent input to the PCIe for 1 item.
+      2nd item if present represents reference clock to the connector.
 
   clock-names:
-    items:
-      - const: fck
+    oneOf:
+      - description: Represent input clock to the PCIe
+        items:
+          - const: fck
+      - description: Represent input clock to the PCIe and reference clock to
+          the connector.
+        items:
+          - const: fck
+          - const: pcie_refclk
 
   vendor-id:
     const: 0x104c
-- 
2.17.1