[PATCH 8/8] dt-bindings: mfd: ocelot: mention MDIO management and add example

[Rasmus Villemoes]

The ocelot switches can also be strapped so that they can be
controlled via an MDIO bus (on either address 0 or 31). Mention that
and add an example.

Signed-off-by: Rasmus Villemoes <ravi@xxxxxxxxx>
---
 .../devicetree/bindings/mfd/mscc,ocelot.yaml  | 121 +++++++++++++++++-
 1 file changed, 119 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/mfd/mscc,ocelot.yaml b/Documentation/devicetree/bindings/mfd/mscc,ocelot.yaml
index 8bd1abfc44d99..bd2787a613e16 100644
--- a/Documentation/devicetree/bindings/mfd/mscc,ocelot.yaml
+++ b/Documentation/devicetree/bindings/mfd/mscc,ocelot.yaml
@@ -12,8 +12,8 @@ maintainers:
 description: |
   The Ocelot ethernet switch family contains chips that have an internal CPU
   (VSC7513, VSC7514) and chips that don't (VSC7511, VSC7512). All switches have
-  the option to be controlled externally via external interfaces like SPI or
-  PCIe.
+  the option to be controlled externally via external interfaces like SPI, MDIO
+  or PCIe.
 
   The switch family is a multi-port networking switch that supports many
   interfaces. Additionally, the device can perform pin control, MDIO buses, and
@@ -164,6 +164,123 @@ examples:
             };
         };
     };
+  - |
+    #include <dt-bindings/phy/phy-ocelot-serdes.h>
+    mdio {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        soc@0 {
+            compatible = "mscc,vsc7512";
+            reg = <0x0>;
+            #address-cells = <1>;
+            #size-cells = <1>;
+
+            mdio@7107009c {
+                compatible = "mscc,ocelot-miim";
+                #address-cells = <1>;
+                #size-cells = <0>;
+                reg = <0x7107009c 0x24>;
+
+                sw_phy1: ethernet-phy@1 {
+                    reg = <0x1>;
+                };
+                sw_phy2: ethernet-phy@2 {
+                    reg = <0x2>;
+                };
+            };
+
+            mdio@710700c0 {
+                compatible = "mscc,ocelot-miim";
+                #address-cells = <1>;
+                #size-cells = <0>;
+                reg = <0x710700c0 0x24>;
+                status = "disabled";
+            };
+
+            ocelot_gpio: pinctrl@71070034 {
+                compatible = "mscc,ocelot-pinctrl";
+                gpio-controller;
+                #gpio-cells = <2>;
+                gpio-ranges = <&ocelot_gpio 0 0 22>;
+                reg = <0x71070034 0x6c>;
+            };
+
+            gpio@710700f8 {
+                compatible = "mscc,ocelot-sgpio";
+                #address-cells = <1>;
+                #size-cells = <0>;
+                reg = <0x710700f8 0x100>;
+                status = "disabled";
+            };
+
+            ocelot_serdes: serdes@710d0000 {
+                compatible = "mscc,vsc7514-serdes";
+                reg = <0x710d0000 0x10000>;
+                #phy-cells = <2>;
+            };
+
+            ethernet-switch@71010000 {
+                compatible = "mscc,vsc7512-switch";
+                reg = <0x71010000 0x10000>,
+                    <0x71030000 0x10000>,
+                    <0x71080000 0x100>,
+                    <0x710e0000 0x10000>,
+                    <0x711e0000 0x100>,
+                    <0x711f0000 0x100>,
+                    <0x71200000 0x100>,
+                    <0x71210000 0x100>,
+                    <0x71220000 0x100>,
+                    <0x71230000 0x100>,
+                    <0x71240000 0x100>,
+                    <0x71250000 0x100>,
+                    <0x71260000 0x100>,
+                    <0x71270000 0x100>,
+                    <0x71280000 0x100>,
+                    <0x71800000 0x80000>,
+                    <0x71880000 0x10000>,
+                    <0x71040000 0x10000>,
+                    <0x71050000 0x10000>,
+                    <0x71060000 0x10000>;
+                reg-names = "sys", "rew", "qs", "ptp", "port0", "port1",
+                    "port2", "port3", "port4", "port5", "port6",
+                    "port7", "port8", "port9", "port10", "qsys",
+                    "ana", "s0", "s1", "s2";
+
+                ethernet-ports {
+                    #address-cells = <1>;
+                    #size-cells = <0>;
+
+                    port@1 {
+                        reg = <1>;
+                        label = "swp1";
+                        phy-handle = <&sw_phy1>;
+                        phy-mode = "internal";
+                    };
+
+                    port@2 {
+                        reg = <2>;
+                        label = "swp2";
+                        phy-handle = <&sw_phy2>;
+                        phy-mode = "internal";
+                    };
+
+                    port@a {
+                        reg = <10>;
+                        label = "cpu";
+                        ethernet = <&enetc_port0>;
+                        phy-connection-type = "sgmii";
+                        phys = <&ocelot_serdes 10 SERDES6G(2)>;
+
+                        fixed-link {
+                            speed = <1000>;
+                            full-duplex;
+                        };
+                    };
+                };
+            };
+        };
+    };
 
 ...
 
-- 
2.49.0