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+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+# Copyright 2019 BayLibre, SAS
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/net/stm32-dwmac.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: STMicroelectronics STM32 / MCU DWMAC glue layer controller
+
+maintainers:
+ - Alexandre Torgue <alexandre.torgue@foss.st.com>
+ - Christophe Roullier <christophe.roullier@foss.st.com>
+
+description:
+ This file documents platform glue layer for stmmac.
+
+# We need a select here so we don't match all nodes with 'snps,dwmac'
+select:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - st,stm32-dwmac
+ - st,stm32mp1-dwmac
+ required:
+ - compatible
+
+allOf:
+ - $ref: snps,dwmac.yaml#
+
+properties:
+ compatible:
+ oneOf:
+ - items:
+ - enum:
+ - st,stm32mp1-dwmac
+ - const: snps,dwmac-4.20a
+ - items:
+ - enum:
+ - st,stm32-dwmac
+ - const: snps,dwmac-4.10a
+ - items:
+ - enum:
+ - st,stm32-dwmac
+ - const: snps,dwmac-3.50a
+
+ reg: true
+
+ reg-names:
+ items:
+ - const: stmmaceth
+
+ clocks:
+ minItems: 3
+ items:
+ - description: GMAC main clock
+ - description: MAC TX clock
+ - description: MAC RX clock
+ - description: For MPU family, used for power mode
+ - description: For MPU family, used for PHY without quartz
+ - description: PTP clock
+
+ clock-names:
+ minItems: 3
+ maxItems: 6
+ contains:
+ enum:
+ - stmmaceth
+ - mac-clk-tx
+ - mac-clk-rx
+ - ethstp
+ - eth-ck
+ - ptp_ref
+
+ st,syscon:
+ $ref: /schemas/types.yaml#/definitions/phandle-array
+ items:
+ - items:
+ - description: phandle to the syscon node which encompases the glue register
+ - description: offset of the control register
+ description:
+ Should be phandle/offset pair. The phandle to the syscon node which
+ encompases the glue register, and the offset of the control register
+
+ st,eth-clk-sel:
+ description:
+ set this property in RGMII PHY when you want to select RCC clock instead of ETH_CLK125.
+ type: boolean
+
+ st,eth-ref-clk-sel:
+ description:
+ set this property in RMII mode when you have PHY without crystal 50MHz and want to
+ select RCC clock instead of ETH_REF_CLK.
+ type: boolean
+
+required:
+ - compatible
+ - clocks
+ - clock-names
+ - st,syscon
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+ #include <dt-bindings/clock/stm32mp1-clks.h>
+ #include <dt-bindings/reset/stm32mp1-resets.h>
+ #include <dt-bindings/mfd/stm32h7-rcc.h>
+ //Example 1
+ ethernet0: ethernet@5800a000 {
+ compatible = "st,stm32mp1-dwmac", "snps,dwmac-4.20a";
+ reg = <0x5800a000 0x2000>;
+ reg-names = "stmmaceth";
+ interrupts = <GIC_SPI 61 IRQ_TYPE_LEVEL_HIGH>;
+ interrupt-names = "macirq";
+ clock-names = "stmmaceth",
+ "mac-clk-tx",
+ "mac-clk-rx",
+ "ethstp",
+ "eth-ck";
+ clocks = <&rcc ETHMAC>,
+ <&rcc ETHTX>,
+ <&rcc ETHRX>,
+ <&rcc ETHSTP>,
+ <&rcc ETHCK_K>;
+ st,syscon = <&syscfg 0x4>;
+ snps,pbl = <2>;
+ snps,axi-config = <&stmmac_axi_config_0>;
+ snps,tso;
+ phy-mode = "rgmii";
+ };
+
+ - |
+ //Example 2 (MCU example)
+ ethernet1: ethernet@40028000 {
+ compatible = "st,stm32-dwmac", "snps,dwmac-3.50a";
+ reg = <0x40028000 0x8000>;
+ reg-names = "stmmaceth";
+ interrupts = <0 61 0>, <0 62 0>;
+ interrupt-names = "macirq", "eth_wake_irq";
+ clock-names = "stmmaceth", "mac-clk-tx", "mac-clk-rx";
+ clocks = <&rcc 0 25>, <&rcc 0 26>, <&rcc 0 27>;
+ st,syscon = <&syscfg 0x4>;
+ snps,pbl = <8>;
+ snps,mixed-burst;
+ phy-mode = "mii";
+ };
+
+ - |
+ //Example 3
+ ethernet2: ethernet@40027000 {
+ compatible = "st,stm32-dwmac", "snps,dwmac-4.10a";
+ reg = <0x40028000 0x8000>;
+ reg-names = "stmmaceth";
+ interrupts = <61>;
+ interrupt-names = "macirq";
+ clock-names = "stmmaceth", "mac-clk-tx", "mac-clk-rx";
+ clocks = <&rcc 62>, <&rcc 61>, <&rcc 60>;
+ st,syscon = <&syscfg 0x4>;
+ snps,pbl = <8>;
+ phy-mode = "mii";
+ };