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@xxxxxx> --- .../bindings/net/ti,k3-am654-cpsw-nuss.yaml | 226 ++++++++++++++++++ 1 file changed, 226 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..37d110cba394 --- /dev/null +++ b/Documentation/devicetree/bindings/net/ti,k3-am654-cpsw-nuss.yaml @@ -0,0 +1,226 @@ +# 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@xxxxxx> + - Sekhar Nori <nsekhar@xxxxxx> + +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 + minItems: 1 + 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@46000000 { + 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
