Merge branch 'net-phy-adin-add-support-for-Analog-Devices-PHYs'

Alexandru Ardelean says:

====================
net: phy: adin: add support for Analog Devices PHYs

This changeset adds support for Analog Devices Industrial Ethernet PHYs.
Particularly the PHYs this driver adds support for:
 * ADIN1200 - Robust, Industrial, Low Power 10/100 Ethernet PHY
 * ADIN1300 - Robust, Industrial, Low Latency 10/100/1000 Gigabit
   Ethernet PHY

The 2 chips are register compatible with one another. The main
difference being that ADIN1200 doesn't operate in gigabit mode.

The chips can be operated by the Generic PHY driver as well via the
standard IEEE PHY registers (0x0000 - 0x000F) which are supported by the
kernel as well. This assumes that configuration of the PHY has been done
completely in HW, according to spec, i.e. no extra SW configuration
required.

This changeset also implements the ability to configure the chips via SW
registers.

Datasheets:
  https://www.analog.com/media/en/technical-documentation/data-sheets/ADIN1300.pdf
  https://www.analog.com/media/en/technical-documentation/data-sheets/ADIN1200.pdf
====================
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Documentation/devicetree/bindings/net/adi,adin.yaml

+# SPDX-License-Identifier: GPL-2.0+
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/net/adi,adin.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Analog Devices ADIN1200/ADIN1300 PHY
+
+maintainers:
+  - Alexandru Ardelean <alexandru.ardelean@analog.com>
+
+description: |
+  Bindings for Analog Devices Industrial Ethernet PHYs
+
+allOf:
+  - $ref: ethernet-phy.yaml#
+
+properties:
+  adi,rx-internal-delay-ps:
+    description: |
+      RGMII RX Clock Delay used only when PHY operates in RGMII mode with
+      internal delay (phy-mode is 'rgmii-id' or 'rgmii-rxid') in pico-seconds.
+    enum: [ 1600, 1800, 2000, 2200, 2400 ]
+    default: 2000
+
+  adi,tx-internal-delay-ps:
+    description: |
+      RGMII TX Clock Delay used only when PHY operates in RGMII mode with
+      internal delay (phy-mode is 'rgmii-id' or 'rgmii-txid') in pico-seconds.
+    enum: [ 1600, 1800, 2000, 2200, 2400 ]
+    default: 2000
+
+  adi,fifo-depth-bits:
+    description: |
+      When operating in RMII mode, this option configures the FIFO depth.
+    enum: [ 4, 8, 12, 16, 20, 24 ]
+    default: 8
+
+  adi,disable-energy-detect:
+    description: |
+      Disables Energy Detect Powerdown Mode (default disabled, i.e energy detect
+      is enabled if this property is unspecified)
+    type: boolean
+
+examples:
+  - |
+    ethernet {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        phy-mode = "rgmii-id";
+
+        ethernet-phy@0 {
+            reg = <0>;
+
+            adi,rx-internal-delay-ps = <1800>;
+            adi,tx-internal-delay-ps = <2200>;
+        };
+    };
+  - |
+    ethernet {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        phy-mode = "rmii";
+
+        ethernet-phy@1 {
+            reg = <1>;
+
+            adi,fifo-depth-bits = <16>;
+            adi,disable-energy-detect;
+        };
+    };

MAINTAINERS

@@ -938,6 +938,14 @@ S:	Supported
 F:	drivers/mux/adgs1408.c
 F:	Documentation/devicetree/bindings/mux/adi,adgs1408.txt
 
+ANALOG DEVICES INC ADIN DRIVER
+M:	Alexandru Ardelean <alexaundru.ardelean@analog.com>
+L:	netdev@vger.kernel.org
+W:	http://ez.analog.com/community/linux-device-drivers
+S:	Supported
+F:	drivers/net/phy/adin.c
+F:	Documentation/devicetree/bindings/net/adi,adin.yaml
+
 ANALOG DEVICES INC ADIS DRIVER LIBRARY
 M:	Alexandru Ardelean <alexandru.ardelean@analog.com>
 S:	Supported

drivers/net/phy/Kconfig

@@ -257,6 +257,15 @@ config SFP
 	depends on HWMON || HWMON=n
 	select MDIO_I2C
 
+config ADIN_PHY
+	tristate "Analog Devices Industrial Ethernet PHYs"
+	help
+	  Adds support for the Analog Devices Industrial Ethernet PHYs.
+	  Currently supports the:
+	  - ADIN1200 - Robust,Industrial, Low Power 10/100 Ethernet PHY
+	  - ADIN1300 - Robust,Industrial, Low Latency 10/100/1000 Gigabit
+	    Ethernet PHY
+
 config AMD_PHY
 	tristate "AMD PHYs"
 	---help---

drivers/net/phy/Makefile

@@ -47,6 +47,7 @@ obj-$(CONFIG_SFP)		+= sfp.o
 sfp-obj-$(CONFIG_SFP)		+= sfp-bus.o
 obj-y				+= $(sfp-obj-y) $(sfp-obj-m)
 
+obj-$(CONFIG_ADIN_PHY)		+= adin.o
 obj-$(CONFIG_AMD_PHY)		+= amd.o
 aquantia-objs			+= aquantia_main.o
 ifdef CONFIG_HWMON