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Date:   Sat, 7 Mar 2020 01:47:29 +0200
From:   Grygorii Strashko <grygorii.strashko@...com>
To:     Rob Herring <robh+dt@...nel.org>, Tero Kristo <t-kristo@...com>,
        "David S . Miller" <davem@...emloft.net>,
        netdev <netdev@...r.kernel.org>, Roger Quadros <rogerq@...com>,
        <devicetree@...r.kernel.org>
CC:     Murali Karicheri <m-karicheri2@...com>,
        Sekhar Nori <nsekhar@...com>,
        Peter Ujfalusi <peter.ujfalusi@...com>,
        Kishon Vijay Abraham I <kishon@...com>,
        <linux-kernel@...r.kernel.org>,
        Grygorii Strashko <grygorii.strashko@...com>
Subject: [PATCH net-next v2 4/9] dt-binding: ti: am65x: document mcu cpsw nuss

Document device tree bindings for The TI AM654x/J721E SoC Gigabit Ethernet MAC
(Media Access Controller - CPSW2G NUSS). The CPSW NUSS provides Ethernet packet
communication for the device.

Signed-off-by: Grygorii Strashko <grygorii.strashko@...com>
---
 .../bindings/net/ti,k3-am654-cpsw-nuss.yaml   | 225 ++++++++++++++++++
 1 file changed, 225 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/net/ti,k3-am654-cpsw-nuss.yaml

diff --git a/Documentation/devicetree/bindings/net/ti,k3-am654-cpsw-nuss.yaml b/Documentation/devicetree/bindings/net/ti,k3-am654-cpsw-nuss.yaml
new file mode 100644
index 000000000000..2b14b4f3045e
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/ti,k3-am654-cpsw-nuss.yaml
@@ -0,0 +1,225 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/net/ti,k3-am654-cpsw-nuss.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: The TI AM654x/J721E SoC Gigabit Ethernet MAC (Media Access Controller) Device Tree Bindings
+
+maintainers:
+  - Grygorii Strashko <grygorii.strashko@...com>
+  - Sekhar Nori <nsekhar@...com>
+
+description:
+  The TI AM654x/J721E SoC Gigabit Ethernet MAC (CPSW2G NUSS) has two ports
+  (one external) and provides Ethernet packet communication for the device.
+  CPSW2G NUSS features - the Reduced Gigabit Media Independent Interface (RGMII),
+  Reduced Media Independent Interface (RMII), the Management Data
+  Input/Output (MDIO) interface for physical layer device (PHY) management,
+  new version of Common Platform Time Sync (CPTS), updated Address Lookup
+  Engine (ALE).
+  One external Ethernet port (port 1) with selectable RGMII/RMII interfaces and
+  an internal Communications Port Programming Interface (CPPI5) (Host port 0).
+  Host Port 0 CPPI Packet Streaming Interface interface supports 8 TX channels
+  and one RX channels and operating by TI AM654x/J721E NAVSS Unified DMA
+  Peripheral Root Complex (UDMA-P) controller.
+  The CPSW2G NUSS is integrated into device MCU domain named MCU_CPSW0.
+
+  Additional features
+  priority level Quality Of Service (QOS) support (802.1p)
+  Support for Audio/Video Bridging (P802.1Qav/D6.0)
+  Support for IEEE 1588 Clock Synchronization (2008 Annex D, Annex E and Annex F)
+  Flow Control (802.3x) Support
+  Time Sensitive Network Support
+  IEEE P902.3br/D2.0 Interspersing Express Traffic
+  IEEE 802.1Qbv/D2.2 Enhancements for Scheduled Traffic
+  Configurable number of addresses plus VLANs
+  Configurable number of classifier/policers
+  VLAN support, 802.1Q compliant, Auto add port VLAN for untagged frames on
+  ingress, Auto VLAN removal on egress and auto pad to minimum frame size.
+  RX/TX csum offload
+
+  Specifications can be found at
+    http://www.ti.com/lit/ug/spruid7e/spruid7e.pdf
+    http://www.ti.com/lit/ug/spruil1a/spruil1a.pdf
+
+properties:
+  "#address-cells": true
+  "#size-cells": true
+
+  compatible:
+    oneOf:
+      - const: ti,am654-cpsw-nuss
+      - const: ti,j721e-cpsw-nuss
+
+  reg:
+    maxItems: 1
+    description:
+       The physical base address and size of full the CPSW2G NUSS IO range
+
+  reg-names:
+    items:
+      - const: cpsw_nuss
+
+  ranges: true
+
+  dma-coherent: true
+
+  clocks:
+    description: CPSW2G NUSS functional clock
+
+  clock-names:
+    items:
+      - const: fck
+
+  power-domains:
+    maxItems: 1
+
+  dmas:
+    minItems: 9
+    maxItems: 9
+
+  dma-names:
+    items:
+      - const: tx0
+      - const: tx1
+      - const: tx2
+      - const: tx3
+      - const: tx4
+      - const: tx5
+      - const: tx6
+      - const: tx7
+      - const: rx
+
+  pinctrl-names: true
+
+  ethernet-ports:
+    type: object
+    properties:
+      '#address-cells':
+        const: 1
+      '#size-cells':
+        const: 0
+
+    patternProperties:
+      "^port@[0-9]+$":
+          type: object
+          description: CPSW2G NUSS external ports
+
+          allOf:
+            - $ref: ethernet-controller.yaml#
+
+          properties:
+            reg:
+              items:
+                - const: 1
+              description: CPSW port number
+
+            phys:
+              maxItems: 1
+              description:  phandle on phy-gmii-sel PHY
+
+            label:
+              description: label associated with this port
+
+            ti,mac-only:
+              $ref: /schemas/types.yaml#definitions/flag
+              description:
+                Specifies the port works in mac-only mode.
+
+            ti,syscon-efuse:
+              $ref: /schemas/types.yaml#definitions/phandle-array
+              description:
+                Phandle to the system control device node which provides access
+                to efuse IO range with MAC addresses
+
+          required:
+            - reg
+            - phys
+
+  mdio:
+    type: object
+    allOf:
+      - $ref: "ti,davinci-mdio.yaml#"
+    description:
+      CPSW MDIO bus.
+
+patternProperties:
+  "^pinctrl-[0-9]+$": true
+
+required:
+  - compatible
+  - reg
+  - reg-names
+  - ranges
+  - clocks
+  - clock-names
+  - power-domains
+  - dmas
+  - dma-names
+  - '#address-cells'
+  - '#size-cells'
+
+examples:
+  - |
+    #include <dt-bindings/pinctrl/k3.h>
+    #include <dt-bindings/soc/ti,sci_pm_domain.h>
+    #include <dt-bindings/net/ti-dp83867.h>
+
+    mcu_cpsw: ethernet@...00000 {
+        compatible = "ti,am654-cpsw-nuss";
+        #address-cells = <2>;
+        #size-cells = <2>;
+        reg = <0x0 0x46000000 0x0 0x200000>;
+        reg-names = "cpsw_nuss";
+        ranges = <0x0 0x0 0x46000000 0x0 0x200000>;
+        dma-coherent;
+        clocks = <&k3_clks 5 10>;
+        clock-names = "fck";
+        power-domains = <&k3_pds 5 TI_SCI_PD_EXCLUSIVE>;
+        pinctrl-names = "default";
+
+        dmas = <&mcu_udmap 0xf000>,
+               <&mcu_udmap 0xf001>,
+               <&mcu_udmap 0xf002>,
+               <&mcu_udmap 0xf003>,
+               <&mcu_udmap 0xf004>,
+               <&mcu_udmap 0xf005>,
+               <&mcu_udmap 0xf006>,
+               <&mcu_udmap 0xf007>,
+               <&mcu_udmap 0x7000>;
+        dma-names = "tx0", "tx1", "tx2", "tx3", "tx4", "tx5", "tx6", "tx7",
+                    "rx";
+
+        ethernet-ports {
+              #address-cells = <1>;
+              #size-cells = <0>;
+
+              cpsw_port1: port@1 {
+                    reg = <1>;
+                    ti,mac-only;
+                    label = "port1";
+                    ti,syscon-efuse = <&mcu_conf 0x200>;
+                    phys = <&phy_gmii_sel 1>;
+
+                    phy-mode = "rgmii-rxid";
+                    phy-handle = <&phy0>;
+              };
+        };
+
+        davinci_mdio: mdio@f00 {
+              compatible = "ti,cpsw-mdio","ti,davinci_mdio";
+              reg = <0x0 0xf00 0x0 0x100>;
+              #address-cells = <1>;
+              #size-cells = <0>;
+              clocks = <&k3_clks 5 10>;
+              clock-names = "fck";
+              bus_freq = <1000000>;
+
+              phy0: ethernet-phy@0 {
+                    reg = <0>;
+                    ti,rx-internal-delay = <DP83867_RGMIIDCTL_2_00_NS>;
+                    ti,fifo-depth = <DP83867_PHYCR_FIFO_DEPTH_4_B_NIB>;
+              };
+        };
+    };
-- 
2.17.1

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