netdev - [PATCH net-next v3 1/3] dt-bindings: net: cdns,macb: added generic PHY and reset mappings for ZynqMP

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Date:   Wed, 26 Jan 2022 18:27:09 -0600
From:   Robert Hancock <robert.hancock@...ian.com>
To:     netdev@...r.kernel.org
Cc:     davem@...emloft.net, kuba@...nel.org, robh+dt@...nel.org,
        michal.simek@...inx.com, nicolas.ferre@...rochip.com,
        claudiu.beznea@...rochip.com, devicetree@...r.kernel.org,
        Robert Hancock <robert.hancock@...ian.com>
Subject: [PATCH net-next v3 1/3] dt-bindings: net: cdns,macb: added generic PHY and reset mappings for ZynqMP

Updated macb DT binding documentation to reflect the phy-names, phys,
resets, reset-names properties which are now used with ZynqMP GEM
devices, and added a ZynqMP-specific DT example.

Signed-off-by: Robert Hancock <robert.hancock@...ian.com>
---
 .../devicetree/bindings/net/cdns,macb.yaml    | 56 +++++++++++++++++++
 1 file changed, 56 insertions(+)

diff --git a/Documentation/devicetree/bindings/net/cdns,macb.yaml b/Documentation/devicetree/bindings/net/cdns,macb.yaml
index 8dd06db34169..6cd3d853dcba 100644
--- a/Documentation/devicetree/bindings/net/cdns,macb.yaml
+++ b/Documentation/devicetree/bindings/net/cdns,macb.yaml
@@ -81,6 +81,25 @@ properties:
 
   phy-handle: true
 
+  phys:
+    maxItems: 1
+
+  phy-names:
+    const: sgmii-phy
+    description:
+      Required with ZynqMP SoC when in SGMII mode.
+      Should reference PS-GTR generic PHY device for this controller
+      instance. See ZynqMP example.
+
+  resets:
+    maxItems: 1
+    description:
+      Recommended with ZynqMP, specify reset control for this
+      controller instance with zynqmp-reset driver.
+
+  reset-names:
+    maxItems: 1
+
   fixed-link: true
 
   iommus:
@@ -157,3 +176,40 @@ examples:
                     reset-gpios = <&pioE 6 1>;
             };
     };
+
+  - |
+    #include <dt-bindings/clock/xlnx-zynqmp-clk.h>
+    #include <dt-bindings/power/xlnx-zynqmp-power.h>
+    #include <dt-bindings/reset/xlnx-zynqmp-resets.h>
+    #include <dt-bindings/phy/phy.h>
+
+    bus {
+            #address-cells = <2>;
+            #size-cells = <2>;
+            gem1: ethernet@...c0000 {
+                    compatible = "cdns,zynqmp-gem", "cdns,gem";
+                    interrupt-parent = <&gic>;
+                    interrupts = <0 59 4>, <0 59 4>;
+                    reg = <0x0 0xff0c0000 0x0 0x1000>;
+                    clocks = <&zynqmp_clk LPD_LSBUS>, <&zynqmp_clk GEM1_REF>,
+                             <&zynqmp_clk GEM1_TX>, <&zynqmp_clk GEM1_RX>,
+                             <&zynqmp_clk GEM_TSU>;
+                    clock-names = "pclk", "hclk", "tx_clk", "rx_clk", "tsu_clk";
+                    #address-cells = <1>;
+                    #size-cells = <0>;
+                    #stream-id-cells = <1>;
+                    iommus = <&smmu 0x875>;
+                    power-domains = <&zynqmp_firmware PD_ETH_1>;
+                    resets = <&zynqmp_reset ZYNQMP_RESET_GEM1>;
+                    reset-names = "gem1_rst";
+                    status = "okay";
+                    phy-mode = "sgmii";
+                    phy-names = "sgmii-phy";
+                    phys = <&psgtr 1 PHY_TYPE_SGMII 1 1>;
+                    fixed-link {
+                            speed = <1000>;
+                            full-duplex;
+                            pause;
+                    };
+            };
+    };
-- 
2.31.1