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+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/net/pcs/renesas,rzn1-miic.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Renesas RZ/N1 MII converter
+
+maintainers:
+ - Clément Léger <clement.leger@bootlin.com>
+
+description: |
+ This MII converter is present on the Renesas RZ/N1 SoC family. It is
+ responsible to do MII passthrough or convert it to RMII/RGMII.
+
+properties:
+ '#address-cells':
+ const: 1
+
+ '#size-cells':
+ const: 0
+
+ compatible:
+ items:
+ - enum:
+ - renesas,r9a06g032-miic
+ - const: renesas,rzn1-miic
+
+ reg:
+ maxItems: 1
+
+ clocks:
+ items:
+ - description: MII reference clock
+ - description: RGMII reference clock
+ - description: RMII reference clock
+ - description: AHB clock used for the MII converter register interface
+
+ renesas,miic-switch-portin:
+ description: MII Switch PORTIN configuration. This value should use one of
+ the values defined in dt-bindings/net/pcs-rzn1-miic.h.
+ $ref: /schemas/types.yaml#/definitions/uint32
+ enum: [1, 2]
+
+patternProperties:
+ "^mii-conv@[0-9]+$":
+ type: object
+ description: MII converter port
+
+ properties:
+ reg:
+ description: MII Converter port number.
+ enum: [1, 2, 3, 4, 5]
+
+ renesas,miic-input:
+ description: Converter input port configuration. This value should use
+ one of the values defined in dt-bindings/net/pcs-rzn1-miic.h.
+ $ref: /schemas/types.yaml#/definitions/uint32
+
+ required:
+ - reg
+ - renesas,miic-input
+
+ additionalProperties: false
+
+ allOf:
+ - if:
+ properties:
+ reg:
+ const: 1
+ then:
+ properties:
+ renesas,miic-input:
+ enum: [0]
+ - if:
+ properties:
+ reg:
+ const: 2
+ then:
+ properties:
+ renesas,miic-input:
+ enum: [1, 11]
+ - if:
+ properties:
+ reg:
+ const: 3
+ then:
+ properties:
+ renesas,miic-input:
+ enum: [7, 10]
+ - if:
+ properties:
+ reg:
+ const: 4
+ then:
+ properties:
+ renesas,miic-input:
+ enum: [4, 6, 9, 13]
+ - if:
+ properties:
+ reg:
+ const: 5
+ then:
+ properties:
+ renesas,miic-input:
+ enum: [3, 5, 8, 12]
+
+required:
+ - '#address-cells'
+ - '#size-cells'
+ - compatible
+ - reg
+ - clocks
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/net/pcs-rzn1-miic.h>
+ #include <dt-bindings/clock/r9a06g032-sysctrl.h>
+
+ eth-miic@44030000 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ compatible = "renesas,r9a06g032-miic", "renesas,rzn1-miic";
+ reg = <0x44030000 0x10000>;
+ clocks = <&sysctrl R9A06G032_CLK_MII_REF>,
+ <&sysctrl R9A06G032_CLK_RGMII_REF>,
+ <&sysctrl R9A06G032_CLK_RMII_REF>,
+ <&sysctrl R9A06G032_HCLK_SWITCH_RG>;
+ renesas,miic-switch-portin = <MIIC_GMAC2_PORT>;
+
+ mii_conv1: mii-conv@1 {
+ renesas,miic-input = <MIIC_GMAC1_PORT>;
+ reg = <1>;
+ };
+
+ mii_conv2: mii-conv@2 {
+ renesas,miic-input = <MIIC_SWITCH_PORTD>;
+ reg = <2>;
+ };
+
+ mii_conv3: mii-conv@3 {
+ renesas,miic-input = <MIIC_SWITCH_PORTC>;
+ reg = <3>;
+ };
+
+ mii_conv4: mii-conv@4 {
+ renesas,miic-input = <MIIC_SWITCH_PORTB>;
+ reg = <4>;
+ };
+
+ mii_conv5: mii-conv@5 {
+ renesas,miic-input = <MIIC_SWITCH_PORTA>;
+ reg = <5>;
+ };
+ };
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+/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */
+/*
+ * Copyright (C) 2022 Schneider-Electric
+ *
+ * Clément Léger <clement.leger@bootlin.com>
+ */
+
+#ifndef _DT_BINDINGS_PCS_RZN1_MIIC
+#define _DT_BINDINGS_PCS_RZN1_MIIC
+
+/*
+ * Reefer to the datasheet [1] section 8.2.1, Internal Connection of Ethernet
+ * Ports to check the available combination
+ *
+ * [1] REN_r01uh0750ej0140-rzn1-introduction_MAT_20210228.pdf
+ */
+
+#define MIIC_GMAC1_PORT 0
+#define MIIC_GMAC2_PORT 1
+#define MIIC_RTOS_PORT 2
+#define MIIC_SERCOS_PORTA 3
+#define MIIC_SERCOS_PORTB 4
+#define MIIC_ETHERCAT_PORTA 5
+#define MIIC_ETHERCAT_PORTB 6
+#define MIIC_ETHERCAT_PORTC 7
+#define MIIC_SWITCH_PORTA 8
+#define MIIC_SWITCH_PORTB 9
+#define MIIC_SWITCH_PORTC 10
+#define MIIC_SWITCH_PORTD 11
+#define MIIC_HSR_PORTA 12
+#define MIIC_HSR_PORTB 13
+
+#endif
This MII converter can be found on the RZ/N1 processor family. The MII converter ports are declared as subnodes which are then referenced by users of the PCS driver such as the switch. Signed-off-by: Clément Léger <clement.leger@bootlin.com> --- .../bindings/net/pcs/renesas,rzn1-miic.yaml | 157 ++++++++++++++++++ include/dt-bindings/net/pcs-rzn1-miic.h | 33 ++++ 2 files changed, 190 insertions(+) create mode 100644 Documentation/devicetree/bindings/net/pcs/renesas,rzn1-miic.yaml create mode 100644 include/dt-bindings/net/pcs-rzn1-miic.h