realtek: phy: add serdes driver

Until now we miy a lot of things in the normal net/phy driver. The SerDes stuff does not belong there. Looking around we can take a lot of ideas from the ocelot/felix drivers and provide a nice implementation for the realtek target. Add the driver and enable it in the readonly mode for the RTL838x, RTL839x, RTL930x targets. WHat can we do later with this: 1. Inject patch commands through the devicetree. 2. Lookup the SerDes thorugh the net/phy driver to control the SerDes at appropriate events (e.g. mac_config()). Signed-off-by: Markus Stockhausen <[email protected]>
plappermaul · Oct 2, 2024 · 654ea4c · 654ea4c
1 parent d03f3dc
commit 654ea4c
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Showing 10 changed files with 1,167 additions and 2 deletions.
diff --git a/target/linux/realtek/dts/rtl838x.dtsi b/target/linux/realtek/dts/rtl838x.dtsi
@@ -44,6 +44,15 @@
 		phy-mode = #m ; \
 	};
 
+#define SWITCH_PORT_SDS(n, s, m, sds1, sds2) \
+	port@##n { \
+		reg = <##n>; \
+		label = SWITCH_PORT_LABEL(s) ; \
+		phy-handle = <&phy##n>; \
+		phy-mode = #m ; \
+		phys = <&serdes0 sds1 sds2>; \
+	};
+
 #define SWITCH_SFP_PORT(n, s, m) \
 	port##n: port@##n { \
 		reg = <##n>; \
@@ -276,6 +285,15 @@
 		};
 	};
 
+	serdes0: serdes@1b00e780 {
+		compatible = "realtek,rtl8380-serdes", "realtek,otto-serdes";
+		reg = <0x1b00e780 0x1200>;
+		port-count = <6>;
+		page-count = <4>;
+		controlled-ports = <0x0000>;
+		#phy-cells = <2>;
+	};
+
 	sram0: sram@9f000000 {
 		compatible = "mmio-sram";
 		reg = <0x9f000000 0x10000>;

diff --git a/target/linux/realtek/dts/rtl839x.dtsi b/target/linux/realtek/dts/rtl839x.dtsi
@@ -44,6 +44,15 @@
 		phy-mode = #m ; \
 	};
 
+#define SWITCH_PORT_SDS(n, s, m, sds1, sds2) \
+	port@##n { \
+		reg = <##n>; \
+		label = SWITCH_PORT_LABEL(s) ; \
+		phy-handle = <&phy##n>; \
+		phy-mode = #m ; \
+		phys = <&serdes0 sds1 sds2>; \
+	};
+
 #define SWITCH_SFP_PORT(n, s, m) \
 	port@##n { \
 		reg = <##n>; \
@@ -292,9 +301,9 @@
 		};
 	};
 
-	ethernet0: ethernet@1b00a300 {
+	ethernet0: ethernet@1b00780c {
 		compatible = "realtek,rtl838x-eth";
-		reg = <0x1b00a300 0x100>;
+		reg = <0x1b00780c 0x74>;
 
 		interrupt-parent = <&intc>;
 		interrupts = <24 3>;
@@ -307,6 +316,15 @@
 		};
 	};
 
+	serdes0: serdes@1b00a000 {
+		compatible = "realtek,rtl8390-serdes", "realtek,otto-serdes";
+		reg = <0x1b00a000 0x1c00>;
+		port-count = <14>;
+		page-count = <12>;
+		controlled-ports = <0x0000>;
+		#phy-cells = <2>;
+	};
+
 	sram0: sram@9f000000 {
 		compatible = "mmio-sram";
 		reg = <0x9f000000 0x18000>;

diff --git a/target/linux/realtek/dts/rtl930x.dtsi b/target/linux/realtek/dts/rtl930x.dtsi
@@ -173,6 +173,16 @@
 		};
 	};
 
+        serdes0: serdes@1b0003b0 {
+                compatible = "realtek,rtl9300-serdes", "realtek,otto-serdes";
+                reg = <0x1b0003b0 0x8>;
+                port-count = <12>;
+                page-count = <64>;
+                controlled-ports = <0x0000>;
+                #phy-cells = <2>;
+        };
+
+
 	switch0: switch@1b000000 {
 		compatible = "realtek,rtl83xx-switch";
 		status = "okay";