linux-kernel - [PATCH net-next 1/2] dt-bindings: dp83td510: Add binding for DP83TD510 Ethernet PHY

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Date:   Thu, 8 Oct 2020 11:23:46 -0500
From:   Dan Murphy <dmurphy@...com>
To:     <davem@...emloft.net>, <andrew@...n.ch>, <f.fainelli@...il.com>,
        <hkallweit1@...il.com>
CC:     <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        Dan Murphy <dmurphy@...com>
Subject: [PATCH net-next 1/2] dt-bindings: dp83td510: Add binding for DP83TD510 Ethernet PHY

The DP83TD510 is a 10M single twisted pair Ethernet PHY

Signed-off-by: Dan Murphy <dmurphy@...com>
---
 .../devicetree/bindings/net/ti,dp83td510.yaml | 70 +++++++++++++++++++
 1 file changed, 70 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/net/ti,dp83td510.yaml

diff --git a/Documentation/devicetree/bindings/net/ti,dp83td510.yaml b/Documentation/devicetree/bindings/net/ti,dp83td510.yaml
new file mode 100644
index 000000000000..0f0eac77a11a
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/ti,dp83td510.yaml
@@ -0,0 +1,70 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# Copyright (C) 2020 Texas Instruments Incorporated
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/net/ti,dp83td510.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: TI DP83TD510 ethernet PHY
+
+allOf:
+  - $ref: "ethernet-controller.yaml#"
+
+maintainers:
+  - Dan Murphy <dmurphy@...com>
+
+description: |
+  The PHY is an twisted pair 10Mbps Ethernet PHY that support MII, RMII and
+  RGMII interfaces.
+
+  Specifications about the Ethernet PHY can be found at:
+    http://www.ti.com/lit/ds/symlink/dp83td510e.pdf
+
+properties:
+  reg:
+    maxItems: 1
+
+  tx-fifo-depth:
+    description: |
+       Transmitt FIFO depth for RMII mode.  The PHY only exposes 4 nibble
+       depths. The valid nibble depths are 4, 5, 6 and 8.
+    default: 5
+
+  rx-internal-delay-ps:
+    description: |
+       Setting this property to a non-zero number sets the RX internal delay
+       for the PHY.  The internal delay for the PHY is fixed to 30ns relative
+       to receive data.
+
+  tx-internal-delay-ps:
+    description: |
+       Setting this property to a non-zero number sets the TX internal delay
+       for the PHY.  The internal delay for the PHY has a range of -4 to 4ns
+       relative to transmit data.
+
+  ti,master-slave-mode:
+    $ref: /schemas/types.yaml#definitions/uint32
+    default: 0
+    description: |
+      Force the PHY to be configured to a specific mode.
+      Force Auto Negotiation - 0
+      Force Master mode at 1v p2p - 1
+      Force Master mode at 2.4v p2p - 2
+      Force Slave mode at 1v p2p - 3
+      Force Slave mode at 2.4v p2p - 4
+
+required:
+  - reg
+
+examples:
+  - |
+    mdio0 {
+      #address-cells = <1>;
+      #size-cells = <0>;
+      ethphy0: ethernet-phy@0 {
+        reg = <0>;
+        tx-fifo-depth = <5>;
+        rx-internal-delay-ps = <1>;
+        tx-internal-delay-ps = <1>;
+      };
+    };
-- 
2.28.0.585.ge1cfff676549