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* [RFC PATCH net-next] dt-bindings: net: dsa: mediatek,mt7530: completely rework binding
@ 2022-07-26 12:24 Arınç ÜNAL
  2022-07-27 10:29 ` Krzysztof Kozlowski
                   ` (2 more replies)
  0 siblings, 3 replies; 13+ messages in thread
From: Arınç ÜNAL @ 2022-07-26 12:24 UTC (permalink / raw)
  To: Andrew Lunn, Vivien Didelot, Florian Fainelli, Vladimir Oltean,
	David S . Miller, Eric Dumazet, Jakub Kicinski, Paolo Abeni,
	Rob Herring, Krzysztof Kozlowski, Matthias Brugger, Sean Wang,
	Landen Chao, DENG Qingfang, Frank Wunderlich,
	Luiz Angelo Daros de Luca, Sander Vanheule, René van Dorst,
	Daniel Golle, erkin.bozoglu, Sergio Paracuellos
  Cc: netdev, devicetree, linux-arm-kernel, linux-mediatek,
	linux-kernel, Arınç ÜNAL

Completely rework the binding for MediaTek MT7530 and MT7531 switches.

- Update title to include MT7531 switch.
- Add me as a maintainer. List maintainers in alphabetical order by first
name.
- Update binding description. Describe the switches, which SoCs they are
on, or if they are standalone.
- Add description to compatible strings.
- Fix MCM description. mediatek,mcm is not used on MT7623NI.
- Remove phy-mode = “rgmii-txid” from description. Same code path is
followed for delayed rgmii and rgmii phy-mode on mtk_eth_soc.c.
- Define acceptable phy-mode values for certain compatible strings and dsa
port regs.
- Remove requiring reg since the referred dsa-port.yaml already does that.
- Remove quotes from $ref: "dsa.yaml#".
- Require mediatek,mcm for MT7621 as the compatible string is only used for
MT7530 which is a part of the multi-chip module.
- Add description for reset-gpios.
- Only allow port 6 to be the cpu port for MT7530 as port 5 is not
supported yet.

Examples:
- Add examples which include all different configurations.
- Make example comments YAML comment instead of DT binding comment.
- Define examples from platform to make the bindings clearer.
- Add interrupt controller to the examples. Include header file for
interrupt.
- Change reset line for MT7621 examples.
- Pretty formatting for the examples.
- Change switch reg to 0.
- Change port labels to fit the example, change some lan labels to wan.
Make port 4, wan.
- Change ethernet-ports to ports.

Signed-off-by: Arınç ÜNAL <arinc.unal@arinc9.com>
---
I’m new to json schema so I experimented a lot with this binding. Open to
suggestions! I've checked the bindings with "make dt_binding_check
DT_SCHEMA_FILES=mediatek,mt7530.yaml".

If anyone knows the GIC bit for interrupt for multi-chip module MT7530 in
MT7623AI SoC, let me know. I’ll add it to the examples.

PHY0/4 muxing on MT7623AI may be possible. Has anyone got a Unielec U7623
or another MT7623AI board to test?

We require the interrupt-parent right? interrupts property shouldn't make
sense without the parent defined, such as GIC or GPIO. I have it missing on
a devicetree, I want to add it.

trgmii speed is 1200 Mbps. Are we supposed to use 2500 speed for fixed-link
trgmii?

To Frank:
Let me know if MII bindings for port 5 and 6 on MT7531 are okay.

Does your recent patch for MT7531 make it possible to set any port for CPU,
including user ports? For now, I put a rule to restrict CPU ports to 5 and
6, as described on the description of dsa port reg property.

I suppose your patch does not bring support for using MT7530's port 5 as
CPU port. We could try this on a BPI-R2. Device schematics show that
MT7530's GMII pins are wired to GMAC1 of MT7623NI to work as RGMII.

Arınç
---
 .../bindings/net/dsa/mediatek,mt7530.yaml     | 959 +++++++++++++-----
 1 file changed, 717 insertions(+), 242 deletions(-)

diff --git a/Documentation/devicetree/bindings/net/dsa/mediatek,mt7530.yaml b/Documentation/devicetree/bindings/net/dsa/mediatek,mt7530.yaml
index 17ab6c69ecc7..d448090981a6 100644
--- a/Documentation/devicetree/bindings/net/dsa/mediatek,mt7530.yaml
+++ b/Documentation/devicetree/bindings/net/dsa/mediatek,mt7530.yaml
@@ -4,60 +4,63 @@
 $id: http://devicetree.org/schemas/net/dsa/mediatek,mt7530.yaml#
 $schema: http://devicetree.org/meta-schemas/core.yaml#
 
-title: Mediatek MT7530 Ethernet switch
+title: Mediatek MT7530 and MT7531 Ethernet Switches
 
 maintainers:
-  - Sean Wang <sean.wang@mediatek.com>
+  - Arınç ÜNAL <arinc.unal@arinc9.com>
   - Landen Chao <Landen.Chao@mediatek.com>
   - DENG Qingfang <dqfext@gmail.com>
+  - Sean Wang <sean.wang@mediatek.com>
 
 description: |
-  Port 5 of mt7530 and mt7621 switch is muxed between:
-  1. GMAC5: GMAC5 can interface with another external MAC or PHY.
-  2. PHY of port 0 or port 4: PHY interfaces with an external MAC like 2nd GMAC
-     of the SOC. Used in many setups where port 0/4 becomes the WAN port.
-     Note: On a MT7621 SOC with integrated switch: 2nd GMAC can only connected to
-       GMAC5 when the gpios for RGMII2 (GPIO 22-33) are not used and not
-       connected to external component!
-
-  Port 5 modes/configurations:
-  1. Port 5 is disabled and isolated: An external phy can interface to the 2nd
-     GMAC of the SOC.
-     In the case of a build-in MT7530 switch, port 5 shares the RGMII bus with 2nd
-     GMAC and an optional external phy. Mind the GPIO/pinctl settings of the SOC!
-  2. Port 5 is muxed to PHY of port 0/4: Port 0/4 interfaces with 2nd GMAC.
-     It is a simple MAC to PHY interface, port 5 needs to be setup for xMII mode
-     and RGMII delay.
-  3. Port 5 is muxed to GMAC5 and can interface to an external phy.
-     Port 5 becomes an extra switch port.
-     Only works on platform where external phy TX<->RX lines are swapped.
-     Like in the Ubiquiti ER-X-SFP.
-  4. Port 5 is muxed to GMAC5 and interfaces with the 2nd GAMC as 2nd CPU port.
-     Currently a 2nd CPU port is not supported by DSA code.
-
-  Depending on how the external PHY is wired:
-  1. normal: The PHY can only connect to 2nd GMAC but not to the switch
-  2. swapped: RGMII TX, RX are swapped; external phy interface with the switch as
-     a ethernet port. But can't interface to the 2nd GMAC.
-
-    Based on the DT the port 5 mode is configured.
-
-  Driver tries to lookup the phy-handle of the 2nd GMAC of the master device.
-  When phy-handle matches PHY of port 0 or 4 then port 5 set-up as mode 2.
-  phy-mode must be set, see also example 2 below!
-  * mt7621: phy-mode = "rgmii-txid";
-  * mt7623: phy-mode = "rgmii";
-
-  CPU-Ports need a phy-mode property:
-    Allowed values on mt7530 and mt7621:
-      - "rgmii"
-      - "trgmii"
-    On mt7531:
-      - "1000base-x"
-      - "2500base-x"
-      - "rgmii"
-      - "sgmii"
+  There are two versions of MT7530. MT7621AT, MT7621DAT, MT7621ST and MT7623AI
+  SoCs include MT7530 which is a part of the multi-chip module.
+  The other version of MT7530 comes as a standalone chip.
+  There is only one version of MT7531 which comes as a standalone chip.
+
+  Port 5 on MT7530 has got various ways of configuration.
+
+  For standalone MT7530:
+
+    - Port 5 can be used as a DSA master.
+      This is currently not supported on the driver.
+
+    - PHY 0 or 4 of the switch can be muxed to connect to the gmac of the SoC
+      which port 5 is wired to. Usually used for connecting the wan port
+      directly to the CPU to achieve 2 Gbps routing in total.
+
+      The driver requires the gmac of the SoC to have "mediatek,eth-mac" as the
+      compatible string and the reg must be 1. So, for now, only gmac1 of an
+      MediaTek SoC can benefit this. Banana Pi BPI-R2 for example.
+      Check out example 5 for a similar configuration.
+
+    - Port 5 can be wired to an external phy. Port 5 becomes a DSA slave.
+      Check out example 7 for a similar configuration.
+
+  For multi-chip module MT7530:
+
+    - Port 5 can be used as a DSA master.
+      This is currently not supported on the driver.
+
+    - PHY 0 or 4 of the switch can be muxed to connect to gmac1 of the SoC.
+      Usually used for connecting the wan port directly to the CPU to achieve 2
+      Gbps routing in total.
+
+      For the MT7621 SoCs, rgmii2 group must be claimed with rgmii2 function.
+      Check out example 5.
+
+    - In case of an external phy wired to gmac1 of the SoC, port 5 must not be
+      enabled.
+
+      For the MT7621 SoCs, rgmii2 group must be claimed with rgmii2 function.
+      Check out example 6.
 
+    - Port 5 can be muxed to an external phy. Port 5 becomes a DSA slave.
+      The external phy must be wired TX to TX to gmac1 of the SoC for this to
+      work. Ubiquiti EdgeRouter X SFP for example.
+
+      For the MT7621 SoCs, rgmii2 group must be claimed with gpio function.
+      Check out example 7.
 
 properties:
   compatible:
@@ -66,6 +69,14 @@ properties:
       - mediatek,mt7531
       - mediatek,mt7621
 
+    description: |
+      mediatek,mt7530:
+        For standalone MT7530 and multi-chip module MT7530 in MT7623AI SoC.
+      mediatek,mt7531:
+        For standalone MT7531.
+      mediatek,mt7621:
+        For multi-chip module MT7530 in MT7621AT, MT7621DAT and MT7621ST SoCs.
+
   reg:
     maxItems: 1
 
@@ -79,7 +90,7 @@ properties:
   gpio-controller:
     type: boolean
     description:
-      if defined, MT7530's LED controller will run on GPIO mode.
+      If defined, MT7530's LED controller will run on GPIO mode.
 
   "#interrupt-cells":
     const: 1
@@ -98,11 +109,14 @@ properties:
   mediatek,mcm:
     type: boolean
     description:
-      if defined, indicates that either MT7530 is the part on multi-chip
-      module belong to MT7623A has or the remotely standalone chip as the
-      function MT7623N reference board provided for.
+      Used for MT7621AT, MT7621DAT, MT7621ST and MT7623AI SoCs which the MT7530
+      switch is a part of the multi-chip module.
 
   reset-gpios:
+    description:
+      GPIO to reset the switch. Use this if mediatek,mcm is not used.
+      This is optional since some boards share the reset line with other
+      components which makes it impossible to probe the switch.
     maxItems: 1
 
   reset-names:
@@ -114,41 +128,12 @@ properties:
       the ethsys.
     maxItems: 1
 
-patternProperties:
-  "^(ethernet-)?ports$":
-    type: object
-
-    patternProperties:
-      "^(ethernet-)?port@[0-9]+$":
-        type: object
-        description: Ethernet switch ports
-
-        unevaluatedProperties: false
-
-        properties:
-          reg:
-            description:
-              Port address described must be 5 or 6 for CPU port and from 0
-              to 5 for user ports.
-
-        allOf:
-          - $ref: dsa-port.yaml#
-          - if:
-              properties:
-                label:
-                  items:
-                    - const: cpu
-            then:
-              required:
-                - reg
-                - phy-mode
-
 required:
   - compatible
   - reg
 
 allOf:
-  - $ref: "dsa.yaml#"
+  - $ref: dsa.yaml#
   - if:
       required:
         - mediatek,mcm
@@ -166,151 +151,531 @@ allOf:
           items:
             - const: mediatek,mt7530
     then:
+      patternProperties:
+        "^(ethernet-)?ports$":
+          type: object
+
+          patternProperties:
+            "^(ethernet-)?port@[0-9]+$":
+              type: object
+              description: Ethernet switch ports
+
+              unevaluatedProperties: false
+
+              properties:
+                reg:
+                  description:
+                    Port address described must be 6 for CPU port and from 0 to
+                    5 for user ports.
+
+              allOf:
+                - $ref: dsa-port.yaml#
+                - if:
+                    properties:
+                      label:
+                        items:
+                          - const: cpu
+                  then:
+                    properties:
+                      phy-mode:
+                        enum:
+                          - rgmii
+                          - trgmii
+
+                      reg:
+                        enum:
+                          - 6
+
+                    required:
+                      - phy-mode
+
       required:
         - core-supply
         - io-supply
 
+  - if:
+      properties:
+        compatible:
+          items:
+            - const: mediatek,mt7531
+    then:
+      patternProperties:
+        "^(ethernet-)?ports$":
+          type: object
+
+          patternProperties:
+            "^(ethernet-)?port@[0-9]+$":
+              type: object
+              description: Ethernet switch ports
+
+              unevaluatedProperties: false
+
+              properties:
+                reg:
+                  description:
+                    Port address described must be 5 or 6 for CPU port and from
+                    0 to 5 for user ports.
+
+              allOf:
+                - $ref: dsa-port.yaml#
+                - if:
+                    properties:
+                      label:
+                        items:
+                          - const: cpu
+                  then:
+                    allOf:
+                      - if:
+                          properties:
+                            reg:
+                              const: 5
+                        then:
+                          properties:
+                            phy-mode:
+                              enum:
+                                - 1000base-x
+                                - 2500base-x
+                                - rgmii
+                                - sgmii
+
+                      - if:
+                          properties:
+                            reg:
+                              const: 6
+                        then:
+                          properties:
+                            phy-mode:
+                              enum:
+                                - 1000base-x
+                                - 2500base-x
+                                - sgmii
+
+                    properties:
+                      reg:
+                        enum:
+                          - 5
+                          - 6
+
+                    required:
+                      - phy-mode
+
+  - if:
+      properties:
+        compatible:
+          items:
+            - const: mediatek,mt7621
+    then:
+      patternProperties:
+        "^(ethernet-)?ports$":
+          type: object
+
+          patternProperties:
+            "^(ethernet-)?port@[0-9]+$":
+              type: object
+              description: Ethernet switch ports
+
+              unevaluatedProperties: false
+
+              properties:
+                reg:
+                  description:
+                    Port address described must be 6 for CPU port and from 0 to
+                    5 for user ports.
+
+              allOf:
+                - $ref: dsa-port.yaml#
+                - if:
+                    properties:
+                      label:
+                        items:
+                          - const: cpu
+                  then:
+                    properties:
+                      phy-mode:
+                        enum:
+                          - rgmii
+                          - trgmii
+
+                      reg:
+                        enum:
+                          - 6
+
+                    required:
+                      - phy-mode
+
+      required:
+        - mediatek,mcm
+
 unevaluatedProperties: false
 
 examples:
+  # Example 1: Standalone MT7530
   - |
     #include <dt-bindings/gpio/gpio.h>
-    mdio {
-        #address-cells = <1>;
-        #size-cells = <0>;
-        switch@0 {
-            compatible = "mediatek,mt7530";
-            reg = <0>;
-
-            core-supply = <&mt6323_vpa_reg>;
-            io-supply = <&mt6323_vemc3v3_reg>;
-            reset-gpios = <&pio 33 GPIO_ACTIVE_HIGH>;
-
-            ethernet-ports {
+
+    platform {
+        ethernet {
+            mdio {
                 #address-cells = <1>;
                 #size-cells = <0>;
-                port@0 {
+
+                switch@0 {
+                    compatible = "mediatek,mt7530";
                     reg = <0>;
-                    label = "lan0";
-                };
 
-                port@1 {
-                    reg = <1>;
-                    label = "lan1";
-                };
+                    reset-gpios = <&pio 33 0>;
 
-                port@2 {
-                    reg = <2>;
-                    label = "lan2";
-                };
+                    core-supply = <&mt6323_vpa_reg>;
+                    io-supply = <&mt6323_vemc3v3_reg>;
+
+                    ports {
+                        #address-cells = <1>;
+                        #size-cells = <0>;
+
+                        port@0 {
+                            reg = <0>;
+                            label = "lan1";
+                        };
+
+                        port@1 {
+                            reg = <1>;
+                            label = "lan2";
+                        };
+
+                        port@2 {
+                            reg = <2>;
+                            label = "lan3";
+                        };
+
+                        port@3 {
+                            reg = <3>;
+                            label = "lan4";
+                        };
 
-                port@3 {
-                    reg = <3>;
-                    label = "lan3";
+                        port@4 {
+                            reg = <4>;
+                            label = "wan";
+                        };
+
+                        port@6 {
+                            reg = <6>;
+                            label = "cpu";
+                            ethernet = <&gmac0>;
+                            phy-mode = "rgmii";
+
+                            fixed-link {
+                                speed = <1000>;
+                                full-duplex;
+                                pause;
+                            };
+                        };
+                    };
                 };
+            };
+        };
+    };
 
-                port@4 {
-                    reg = <4>;
-                    label = "wan";
+  # Example 2: MT7530 in MT7623AI SoC
+  - |
+    #include <dt-bindings/reset/mt2701-resets.h>
+
+    platform {
+        ethernet {
+            mdio {
+                #address-cells = <1>;
+                #size-cells = <0>;
+
+                switch@0 {
+                    compatible = "mediatek,mt7530";
+                    reg = <0>;
+
+                    mediatek,mcm;
+                    resets = <&ethsys MT2701_ETHSYS_MCM_RST>;
+                    reset-names = "mcm";
+
+                    core-supply = <&mt6323_vpa_reg>;
+                    io-supply = <&mt6323_vemc3v3_reg>;
+
+                    ports {
+                        #address-cells = <1>;
+                        #size-cells = <0>;
+
+                        port@0 {
+                            reg = <0>;
+                            label = "lan1";
+                        };
+
+                        port@1 {
+                            reg = <1>;
+                            label = "lan2";
+                        };
+
+                        port@2 {
+                            reg = <2>;
+                            label = "lan3";
+                        };
+
+                        port@3 {
+                            reg = <3>;
+                            label = "lan4";
+                        };
+
+                        port@4 {
+                            reg = <4>;
+                            label = "wan";
+                        };
+
+                        port@6 {
+                            reg = <6>;
+                            label = "cpu";
+                            ethernet = <&gmac0>;
+                            phy-mode = "trgmii";
+
+                            fixed-link {
+                                speed = <1000>;
+                                full-duplex;
+                                pause;
+                            };
+                        };
+                    };
                 };
+            };
+        };
+    };
+
+  # Example 3: Standalone MT7531
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+    #include <dt-bindings/interrupt-controller/irq.h>
+
+    platform {
+        ethernet {
+            mdio {
+                #address-cells = <1>;
+                #size-cells = <0>;
 
-                port@6 {
-                    reg = <6>;
-                    label = "cpu";
-                    ethernet = <&gmac0>;
-                    phy-mode = "trgmii";
-                    fixed-link {
-                        speed = <1000>;
-                        full-duplex;
+                switch@0 {
+                    compatible = "mediatek,mt7531";
+                    reg = <0>;
+
+                    reset-gpios = <&pio 54 0>;
+
+                    interrupt-controller;
+                    #interrupt-cells = <1>;
+                    interrupt-parent = <&pio>;
+                    interrupts = <53 IRQ_TYPE_LEVEL_HIGH>;
+
+                    ports {
+                        #address-cells = <1>;
+                        #size-cells = <0>;
+
+                        port@0 {
+                            reg = <0>;
+                            label = "lan1";
+                        };
+
+                        port@1 {
+                            reg = <1>;
+                            label = "lan2";
+                        };
+
+                        port@2 {
+                            reg = <2>;
+                            label = "lan3";
+                        };
+
+                        port@3 {
+                            reg = <3>;
+                            label = "lan4";
+                        };
+
+                        port@4 {
+                            reg = <4>;
+                            label = "wan";
+                        };
+
+                        port@6 {
+                            reg = <6>;
+                            label = "cpu";
+                            ethernet = <&gmac0>;
+                            phy-mode = "2500base-x";
+
+                            fixed-link {
+                                speed = <2500>;
+                                full-duplex;
+                                pause;
+                            };
+                        };
                     };
                 };
             };
         };
     };
 
+  # Example 4: MT7530 in MT7621AT, MT7621DAT and MT7621ST SoCs
   - |
-    //Example 2: MT7621: Port 4 is WAN port: 2nd GMAC -> Port 5 -> PHY port 4.
-
-    ethernet {
-        #address-cells = <1>;
-        #size-cells = <0>;
-        gmac0: mac@0 {
-            compatible = "mediatek,eth-mac";
-            reg = <0>;
-            phy-mode = "rgmii";
-
-            fixed-link {
-                speed = <1000>;
-                full-duplex;
-                pause;
+    #include <dt-bindings/interrupt-controller/mips-gic.h>
+    #include <dt-bindings/reset/mt7621-reset.h>
+
+    platform {
+        ethernet {
+            mdio {
+                #address-cells = <1>;
+                #size-cells = <0>;
+
+                switch@0 {
+                    compatible = "mediatek,mt7621";
+                    reg = <0>;
+
+                    mediatek,mcm;
+                    resets = <&sysc MT7621_RST_MCM>;
+                    reset-names = "mcm";
+
+                    interrupt-controller;
+                    #interrupt-cells = <1>;
+                    interrupt-parent = <&gic>;
+                    interrupts = <GIC_SHARED 23 IRQ_TYPE_LEVEL_HIGH>;
+
+                    ports {
+                        #address-cells = <1>;
+                        #size-cells = <0>;
+
+                        port@0 {
+                            reg = <0>;
+                            label = "lan1";
+                        };
+
+                        port@1 {
+                            reg = <1>;
+                            label = "lan2";
+                        };
+
+                        port@2 {
+                            reg = <2>;
+                            label = "lan3";
+                        };
+
+                        port@3 {
+                            reg = <3>;
+                            label = "lan4";
+                        };
+
+                        port@4 {
+                            reg = <4>;
+                            label = "wan";
+                        };
+
+                        port@6 {
+                            reg = <6>;
+                            label = "cpu";
+                            ethernet = <&gmac0>;
+                            phy-mode = "trgmii";
+
+                            fixed-link {
+                                speed = <1000>;
+                                full-duplex;
+                                pause;
+                            };
+                        };
+                    };
+                };
             };
         };
+    };
 
-        gmac1: mac@1 {
-            compatible = "mediatek,eth-mac";
-            reg = <1>;
-            phy-mode = "rgmii-txid";
-            phy-handle = <&phy4>;
+  # Example 5: MT7621: mux MT7530's phy4 to SoC's gmac1
+  - |
+    #include <dt-bindings/interrupt-controller/mips-gic.h>
+    #include <dt-bindings/reset/mt7621-reset.h>
+
+    platform {
+        pinctrl {
+            example5_rgmii2_pins: rgmii2-pins {
+                pinmux {
+                    groups = "rgmii2";
+                    function = "rgmii2";
+                };
+            };
         };
 
-        mdio: mdio-bus {
+        ethernet {
             #address-cells = <1>;
             #size-cells = <0>;
 
-            /* Internal phy */
-            phy4: ethernet-phy@4 {
-                reg = <4>;
+            pinctrl-names = "default";
+            pinctrl-0 = <&example5_rgmii2_pins>;
+
+            mac@1 {
+                compatible = "mediatek,eth-mac";
+                reg = <1>;
+
+                phy-handle = <&example5_ethphy4>;
             };
 
-            mt7530: switch@1f {
-                compatible = "mediatek,mt7621";
-                reg = <0x1f>;
-                mediatek,mcm;
+            mdio {
+                #address-cells = <1>;
+                #size-cells = <0>;
 
-                resets = <&rstctrl 2>;
-                reset-names = "mcm";
+                /* MT7530's phy4 */
+                example5_ethphy4: ethernet-phy@4 {
+                    reg = <4>;
+                };
 
-                ethernet-ports {
-                    #address-cells = <1>;
-                    #size-cells = <0>;
+                switch@0 {
+                    compatible = "mediatek,mt7621";
+                    reg = <0>;
 
-                    port@0 {
-                        reg = <0>;
-                        label = "lan0";
-                    };
+                    mediatek,mcm;
+                    resets = <&sysc MT7621_RST_MCM>;
+                    reset-names = "mcm";
 
-                    port@1 {
-                        reg = <1>;
-                        label = "lan1";
-                    };
+                    interrupt-controller;
+                    #interrupt-cells = <1>;
+                    interrupt-parent = <&gic>;
+                    interrupts = <GIC_SHARED 23 IRQ_TYPE_LEVEL_HIGH>;
 
-                    port@2 {
-                        reg = <2>;
-                        label = "lan2";
-                    };
+                    ports {
+                        #address-cells = <1>;
+                        #size-cells = <0>;
 
-                    port@3 {
-                        reg = <3>;
-                        label = "lan3";
-                    };
+                        port@0 {
+                            reg = <0>;
+                            label = "lan1";
+                        };
 
-                    /* Commented out. Port 4 is handled by 2nd GMAC.
-                    port@4 {
-                        reg = <4>;
-                        label = "lan4";
-                    };
-                    */
+                        port@1 {
+                            reg = <1>;
+                            label = "lan2";
+                        };
+
+                        port@2 {
+                            reg = <2>;
+                            label = "lan3";
+                        };
 
-                    port@6 {
-                        reg = <6>;
-                        label = "cpu";
-                        ethernet = <&gmac0>;
-                        phy-mode = "rgmii";
+                        port@3 {
+                            reg = <3>;
+                            label = "lan4";
+                        };
 
-                        fixed-link {
-                            speed = <1000>;
-                            full-duplex;
-                            pause;
+                        /* Commented out, phy4 is muxed to gmac1.
+                        port@4 {
+                            reg = <4>;
+                            label = "wan";
+                        };
+                        */
+
+                        port@6 {
+                            reg = <6>;
+                            label = "cpu";
+                            ethernet = <&gmac0>;
+                            phy-mode = "trgmii";
+
+                            fixed-link {
+                                speed = <1000>;
+                                full-duplex;
+                                pause;
+                            };
                         };
                     };
                 };
@@ -318,87 +683,197 @@ examples:
         };
     };
 
+  # Example 6: MT7621: mux external phy to SoC's gmac1
   - |
-    //Example 3: MT7621: Port 5 is connected to external PHY: Port 5 -> external PHY.
-
-    ethernet {
-        #address-cells = <1>;
-        #size-cells = <0>;
-        gmac_0: mac@0 {
-            compatible = "mediatek,eth-mac";
-            reg = <0>;
-            phy-mode = "rgmii";
-
-            fixed-link {
-                speed = <1000>;
-                full-duplex;
-                pause;
+    #include <dt-bindings/interrupt-controller/mips-gic.h>
+    #include <dt-bindings/reset/mt7621-reset.h>
+
+    platform {
+        pinctrl {
+            example6_rgmii2_pins: rgmii2-pins {
+                pinmux {
+                    groups = "rgmii2";
+                    function = "rgmii2";
+                };
             };
         };
 
-        mdio0: mdio-bus {
+        ethernet {
             #address-cells = <1>;
             #size-cells = <0>;
 
-            /* External phy */
-            ephy5: ethernet-phy@7 {
-                reg = <7>;
+            pinctrl-names = "default";
+            pinctrl-0 = <&example6_rgmii2_pins>;
+
+            mac@1 {
+                compatible = "mediatek,eth-mac";
+                reg = <1>;
+
+                phy-handle = <&example6_ethphy7>;
+                phy-mode = "rgmii";
             };
 
-            switch@1f {
-                compatible = "mediatek,mt7621";
-                reg = <0x1f>;
-                mediatek,mcm;
+            mdio {
+                #address-cells = <1>;
+                #size-cells = <0>;
 
-                resets = <&rstctrl 2>;
-                reset-names = "mcm";
+                /* External PHY */
+                example6_ethphy7: ethernet-phy@7 {
+                    reg = <7>;
+                    phy-mode = "rgmii";
+                };
 
-                ethernet-ports {
-                    #address-cells = <1>;
-                    #size-cells = <0>;
+                switch@0 {
+                    compatible = "mediatek,mt7621";
+                    reg = <0>;
 
-                    port@0 {
-                        reg = <0>;
-                        label = "lan0";
-                    };
+                    mediatek,mcm;
+                    resets = <&sysc MT7621_RST_MCM>;
+                    reset-names = "mcm";
 
-                    port@1 {
-                        reg = <1>;
-                        label = "lan1";
-                    };
+                    interrupt-controller;
+                    #interrupt-cells = <1>;
+                    interrupt-parent = <&gic>;
+                    interrupts = <GIC_SHARED 23 IRQ_TYPE_LEVEL_HIGH>;
 
-                    port@2 {
-                        reg = <2>;
-                        label = "lan2";
-                    };
+                    ports {
+                        #address-cells = <1>;
+                        #size-cells = <0>;
 
-                    port@3 {
-                        reg = <3>;
-                        label = "lan3";
-                    };
+                        port@0 {
+                            reg = <0>;
+                            label = "lan1";
+                        };
 
-                    port@4 {
-                        reg = <4>;
-                        label = "lan4";
-                    };
+                        port@1 {
+                            reg = <1>;
+                            label = "lan2";
+                        };
 
-                    port@5 {
-                        reg = <5>;
-                        label = "lan5";
-                        phy-mode = "rgmii";
-                        phy-handle = <&ephy5>;
+                        port@2 {
+                            reg = <2>;
+                            label = "lan3";
+                        };
+
+                        port@3 {
+                            reg = <3>;
+                            label = "lan4";
+                        };
+
+                        port@4 {
+                            reg = <4>;
+                            label = "wan";
+                        };
+
+                        port@6 {
+                            reg = <6>;
+                            label = "cpu";
+                            ethernet = <&gmac0>;
+                            phy-mode = "trgmii";
+
+                            fixed-link {
+                                speed = <1000>;
+                                full-duplex;
+                                pause;
+                            };
+                        };
                     };
+                };
+            };
+        };
+    };
+
+  # Example 7: MT7621: mux external phy to MT7530's port 5
+  - |
+    #include <dt-bindings/interrupt-controller/mips-gic.h>
+    #include <dt-bindings/reset/mt7621-reset.h>
+
+    platform {
+        pinctrl {
+            example7_rgmii2_pins: rgmii2-pins {
+                pinmux {
+                    groups = "rgmii2";
+                    function = "gpio";
+                };
+            };
+        };
+
+        ethernet {
+            #address-cells = <1>;
+            #size-cells = <0>;
+
+            pinctrl-names = "default";
+            pinctrl-0 = <&example7_rgmii2_pins>;
+
+            mdio {
+                #address-cells = <1>;
+                #size-cells = <0>;
+
+                /* External PHY */
+                example7_ethphy7: ethernet-phy@7 {
+                    reg = <7>;
+                };
+
+                switch@0 {
+                    compatible = "mediatek,mt7621";
+                    reg = <0>;
+
+                    mediatek,mcm;
+                    resets = <&sysc MT7621_RST_MCM>;
+                    reset-names = "mcm";
 
-                    cpu_port0: port@6 {
-                        reg = <6>;
-                        label = "cpu";
-                        ethernet = <&gmac_0>;
-                        phy-mode = "rgmii";
+                    interrupt-controller;
+                    #interrupt-cells = <1>;
+                    interrupt-parent = <&gic>;
+                    interrupts = <GIC_SHARED 23 IRQ_TYPE_LEVEL_HIGH>;
+
+                    ports {
+                        #address-cells = <1>;
+                        #size-cells = <0>;
+
+                        port@0 {
+                            reg = <0>;
+                            label = "lan1";
+                        };
+
+                        port@1 {
+                            reg = <1>;
+                            label = "lan2";
+                        };
+
+                        port@2 {
+                            reg = <2>;
+                            label = "lan3";
+                        };
+
+                        port@3 {
+                            reg = <3>;
+                            label = "lan4";
+                        };
+
+                        port@4 {
+                            reg = <4>;
+                            label = "wan";
+                        };
+
+                        port@5 {
+                            reg = <5>;
+                            label = "extphy";
+                            phy-mode = "rgmii-txid";
+                            phy-handle = <&example7_ethphy7>;
+                        };
 
-                        fixed-link {
-                            speed = <1000>;
-                            full-duplex;
-                            pause;
+                        port@6 {
+                            reg = <6>;
+                            label = "cpu";
+                            ethernet = <&gmac0>;
+                            phy-mode = "trgmii";
+
+                            fixed-link {
+                                speed = <1000>;
+                                full-duplex;
+                                pause;
+                            };
                         };
                     };
                 };
-- 
2.34.1


^ permalink raw reply related	[flat|nested] 13+ messages in thread

end of thread, other threads:[~2022-08-01 17:56 UTC | newest]

Thread overview: 13+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2022-07-26 12:24 [RFC PATCH net-next] dt-bindings: net: dsa: mediatek,mt7530: completely rework binding Arınç ÜNAL
2022-07-27 10:29 ` Krzysztof Kozlowski
2022-07-30  8:24   ` Arınç ÜNAL
2022-08-01 17:54     ` Krzysztof Kozlowski
2022-07-27 20:31 ` Aw: " Frank Wunderlich
2022-07-27 20:59   ` Arınç ÜNAL
2022-07-27 21:26     ` Frank Wunderlich
2022-07-27 21:46       ` Arınç ÜNAL
2022-07-27 22:04         ` Arınç ÜNAL
2022-07-28 16:14 ` Daniel Golle
2022-07-30  9:15   ` Arınç ÜNAL
2022-07-30  9:30     ` DENG Qingfang
2022-07-30  9:35       ` Arınç ÜNAL

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