linux-kernel - [PATCH v1 3/3] dt-bindings: net: sun8i-emac: Add AC300 EMAC1 nvmem phy selection

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Message-Id: <20250526182939.2593553-3-james.hilliard1@gmail.com>
Date: Mon, 26 May 2025 12:29:36 -0600
From: James Hilliard <james.hilliard1@...il.com>
To: netdev@...r.kernel.org
Cc: linux-sunxi@...ts.linux.dev,
	James Hilliard <james.hilliard1@...il.com>,
	Andrew Lunn <andrew+netdev@...n.ch>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Chen-Yu Tsai <wens@...e.org>,
	Jernej Skrabec <jernej.skrabec@...il.com>,
	Samuel Holland <samuel@...lland.org>,
	Maxime Ripard <mripard@...nel.org>,
	devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH v1 3/3] dt-bindings: net: sun8i-emac: Add AC300 EMAC1 nvmem phy selection

The Allwinner H616 EMAC1 can be connected to an on-die AC200 or AC300
PHY depending upon the silicon variant.

Add a new allwinner,sun50i-h616-emac1 compatible and example, support
for the allwinner,sun50i-h616-emac1 will be added later on.

Add nvmem-cells and nvmem-cell-names properties for the ac300 efuse
based phy selection.

Signed-off-by: James Hilliard <james.hilliard1@...il.com>
---
 .../net/allwinner,sun8i-a83t-emac.yaml        | 42 +++++++++++++++++++
 1 file changed, 42 insertions(+)

diff --git a/Documentation/devicetree/bindings/net/allwinner,sun8i-a83t-emac.yaml b/Documentation/devicetree/bindings/net/allwinner,sun8i-a83t-emac.yaml
index 7fe0352dff0f..b6bf1718dba1 100644
--- a/Documentation/devicetree/bindings/net/allwinner,sun8i-a83t-emac.yaml
+++ b/Documentation/devicetree/bindings/net/allwinner,sun8i-a83t-emac.yaml
@@ -18,6 +18,7 @@ properties:
       - const: allwinner,sun8i-r40-gmac
       - const: allwinner,sun8i-v3s-emac
       - const: allwinner,sun50i-a64-emac
+      - const: allwinner,sun50i-h616-emac1
       - items:
           - enum:
               - allwinner,sun20i-d1-emac
@@ -28,6 +29,14 @@ properties:
   reg:
     maxItems: 1
 
+  nvmem-cells:
+    maxItems: 1
+    description: NVMEM cell with the ac300 efuse.
+
+  nvmem-cell-names:
+    items:
+      - const: ac300
+
   interrupts:
     maxItems: 1
 
@@ -321,4 +330,37 @@ examples:
         };
     };
 
+  - |
+    ethernet@...0000 {
+        compatible = "allwinner,sun50i-h616-emac1";
+        reg = <0x05030000 0x10000>;
+        interrupts = <GIC_SPI 15 IRQ_TYPE_LEVEL_HIGH>;
+        interrupt-names = "macirq";
+        resets = <&ccu RST_BUS_EMAC1>;
+        reset-names = "stmmaceth";
+        clocks = <&ccu CLK_BUS_EMAC1>;
+        clock-names = "stmmaceth";
+        phys = <&ac200_rmii_phy>, <&ac300_rmii_phy>;
+        phy-names = "ac200", "ac300";
+        phy-mode = "rgmii";
+        nvmem-cells = <&ephy_acx00>;
+        nvmem-cell-names = "ac300";
+
+        mdio {
+            compatible = "snps,dwmac-mdio";
+            #address-cells = <1>;
+            #size-cells = <0>;
+
+            ac300_rmii_phy: ac300-ethernet-phy@0 {
+              compatible = "ethernet-phy-ieee802.3-c22";
+              reg = <0>;
+            };
+
+            ac200_rmii_phy: ac200-ethernet-phy@1 {
+              compatible = "ethernet-phy-ieee802.3-c22";
+              reg = <1>;
+            };
+        };
+    };
+
 ...
-- 
2.34.1