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Date: Tue, 30 Jan 2024 09:59:34 +0100
From: Bastien Curutchet <bastien.curutchet@...tlin.com>
To: "David S. Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Conor Dooley <conor+dt@...nel.org>,
Richard Cochran <richardcochran@...il.com>,
Andrew Lunn <andrew@...n.ch>,
Heiner Kallweit <hkallweit1@...il.com>,
Russell King <linux@...linux.org.uk>,
Bastien Curutchet <bastien.curutchet@...tlin.com>
Cc: netdev@...r.kernel.org,
devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org,
Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
Herve Codina <herve.codina@...tlin.com>
Subject: [PATCH 1/2] dt-bindings: net: Add TI DP83640
The TI DP83640 is a PTP PHY. Some of his features can be enabled by
hardware straps or by registers configuration. Add a device tree
binding for configuration through registers
Signed-off-by: Bastien Curutchet <bastien.curutchet@...tlin.com>
---
.../devicetree/bindings/net/ti,dp83640.yaml | 113 ++++++++++++++++++
include/dt-bindings/net/ti-dp83640.h | 18 +++
2 files changed, 131 insertions(+)
create mode 100644 Documentation/devicetree/bindings/net/ti,dp83640.yaml
create mode 100644 include/dt-bindings/net/ti-dp83640.h
diff --git a/Documentation/devicetree/bindings/net/ti,dp83640.yaml b/Documentation/devicetree/bindings/net/ti,dp83640.yaml
new file mode 100644
index 000000000000..b0f389122934
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/ti,dp83640.yaml
@@ -0,0 +1,113 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# Copyright 2024 Nanometrics Inc
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/net/ti,dp83640.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: TI DP83640 ethernet PHY
+
+allOf:
+ - $ref: ethernet-controller.yaml#
+
+maintainers:
+ - Bastien Curutchet <bastien.curutchet@...tlin.com>
+
+description: |
+ The DP83640 Precision PHYTER device delivers the highest level of precision
+ clock synchronization for real time industrial connectivity based on the
+ IEEE 1588 standard. The DP83640 has deterministic, low latency and allows
+ choice of microcontroller with no hardware customization required
+
+ This device interfaces directly to the MAC layer through the
+ IEEE 802.3 Standard Media Independent Interface (MII), or Reduced MII (RMII).
+
+ Specifications about the Ethernet PHY can be found at:
+ https://www.ti.com/lit/gpn/dp83640
+
+properties:
+ reg:
+ maxItems: 1
+
+ ti,clk-output:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ enum: [0, 1]
+ description: |
+ If present, enables or disables the CLK_OUT pin.
+ CLK_OUT pin disabling can also be strapped. If the strap pin is not set
+ correctly or not set at all then this can be used to configure it.
+ - 0 = CLK_OUT pin disabled
+ - 1 = CLK_OUT pin enabled
+ - unset = Configured by straps
+
+ ti,led-config:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ enum: [1, 2, 3]
+ description: |
+ If present, configures the LED Mode (values defined in
+ dt-bindings/net/ti-dp83640.h).
+ LED configuration can also be strapped. If the strap pin is not set
+ correctly or not set at all then this can be used to configure it.
+ - 1 = Mode 1
+ LED_LINK = ON for Good Link, OFF for No Link
+ LED_SPEED = ON in 100 Mb/s, OFF in 10 Mb/s
+ LED_ACT = ON for Activity, OFF for No Activity
+ - 2 = Mode 2
+ LED_LINK = ON for Good Link, BLINK for Activity
+ LED_SPEED = ON in 100 Mb/s, OFF in 10 Mb/s
+ LED_ACT = ON for Collision, OFF for No Collision
+ - 3 = Mode 3
+ LED_LINK = ON for Good Link, BLINK for Activity
+ LED_SPEED = ON in 100 Mb/s, OFF in 10 Mb/s
+ LED_ACT = ON for Full Duplex, OFF for Half Duplex
+ - unset = Configured by straps
+
+ ti,phy-control-frames:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ enum: [0, 1]
+ description: |
+ If present, enables or disables the PHY control frames.
+ PHY Control Frames support can also be strapped. If the strap pin is not
+ set correctly or not set at all then this can be used to configure it.
+ - 0 = PHY Control Frames disabled
+ - 1 = PHY Control Frames enabled
+ - unset = Configured by straps
+
+ ti,fiber-mode:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ enum: [0, 1]
+ description: |
+ If present, enables or disables the FX Fiber Mode.
+ Fiber mode support can also be strapped. If the strap pin is not set
+ correctly or not set at all then this can be used to configure it.
+ - 0 = FX Fiber Mode disabled
+ - 1 = FX Fiber Mode enabled
+ - unset = Configured by straps
+
+ ti,energy-detect-en:
+ $ref: /schemas/types.yaml#/definitions/flag
+ description: |
+ If present, Energy Detect Mode is enabled. If not present, Energy Detect
+ Mode is disabled. This feature can not be strapped.
+
+required:
+ - reg
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/net/ti-dp83640.h>
+
+ mdio0 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ ethphy0: ethernet-phy@0 {
+ reg = <0>;
+ ti,clk-output = <0>;
+ ti,energy-detect-en;
+ ti,led-config = <DP83640_PHYCR_LED_CNFG_MODE_3>;
+ ti,phy-control-frames = <1>;
+ ti,fiber-mode = <1>;
+ };
+ };
diff --git a/include/dt-bindings/net/ti-dp83640.h b/include/dt-bindings/net/ti-dp83640.h
new file mode 100644
index 000000000000..5f44f8eeb666
--- /dev/null
+++ b/include/dt-bindings/net/ti-dp83640.h
@@ -0,0 +1,18 @@
+/* SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause */
+/*
+ * Device Tree constants for the Texas Instruments DP83640 PHY
+ *
+ * Author: Bastien Curutchet bastien.curutchet@...tlin.com>
+ *
+ * Copyright: 2024 Nanometrics Inc.
+ */
+
+#ifndef _DT_BINDINGS_TI_DP83640_H
+#define _DT_BINDINGS_TI_DP83640_H
+
+/* PHY CTRL bits */
+#define DP83640_PHYCR_LED_CNFG_MODE_1 1
+#define DP83640_PHYCR_LED_CNFG_MODE_2 2
+#define DP83640_PHYCR_LED_CNFG_MODE_3 3
+
+#endif
--
2.43.0
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