linux-kernel - [PATCH 1/3] arm64: dts: ti: k3-j722s: Add support for SERDES0

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Message-ID: <20240429120932.11456-2-r-gunasekaran@ti.com>
Date: Mon, 29 Apr 2024 17:39:30 +0530
From: Ravi Gunasekaran <r-gunasekaran@...com>
To: <nm@...com>, <vigneshr@...com>
CC: <kristo@...nel.org>, <robh@...nel.org>, <krzk+dt@...nel.org>,
        <conor+dt@...nel.org>, <srk@...com>, <rogerq@...nel.org>,
        <r-gunasekaran@...com>, <linux-arm-kernel@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH 1/3] arm64: dts: ti: k3-j722s: Add support for SERDES0

Add SERDES0 and its wrapper description to support USB3
and SGMII interfaces.

Signed-off-by: Ravi Gunasekaran <r-gunasekaran@...com>
---
 arch/arm64/boot/dts/ti/k3-j722s.dtsi | 54 ++++++++++++++++++++++++++++
 1 file changed, 54 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-j722s.dtsi b/arch/arm64/boot/dts/ti/k3-j722s.dtsi
index c75744edb143..beba5a3ea6cc 100644
--- a/arch/arm64/boot/dts/ti/k3-j722s.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-j722s.dtsi
@@ -9,6 +9,7 @@
 #include <dt-bindings/interrupt-controller/irq.h>
 #include <dt-bindings/interrupt-controller/arm-gic.h>
 #include <dt-bindings/soc/ti,sci_pm_domain.h>
+#include <dt-bindings/phy/phy-ti.h>
 
 #include "k3-am62p5.dtsi"
 
@@ -75,6 +76,50 @@
 			 <0x00 0x78000000 0x00 0x78000000 0x00 0x00008000>,
 			 <0x00 0x78100000 0x00 0x78100000 0x00 0x00008000>;
 	};
+
+	serdes_refclk: clock-cmnrefclk {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <0>;
+	};
+
+	serdes_wiz0: wiz@...0000 {
+		compatible = "ti,am64-wiz-10g";
+		ranges = <0x0f000000 0x0 0x0f000000 0x00010000>;
+		#address-cells = <1>;
+		#size-cells = <1>;
+		power-domains = <&k3_pds 279 TI_SCI_PD_EXCLUSIVE>;
+		clocks = <&k3_clks 279 0>, <&k3_clks 279 1>, <&serdes_refclk>;
+		clock-names = "fck", "core_ref_clk", "ext_ref_clk";
+		num-lanes = <1>;
+		#reset-cells = <1>;
+		#clock-cells = <1>;
+
+		assigned-clocks = <&k3_clks 279 1>;
+		assigned-clock-parents = <&k3_clks 279 5>;
+
+		serdes0: serdes@...0000 {
+			compatible = "ti,j721e-serdes-10g";
+			reg = <0x0f000000 0x00010000>;
+			reg-names = "torrent_phy";
+			resets = <&serdes_wiz0 0>;
+			reset-names = "torrent_reset";
+			clocks = <&serdes_wiz0 TI_WIZ_PLL0_REFCLK>,
+				 <&serdes_wiz0 TI_WIZ_PHY_EN_REFCLK>;
+			clock-names = "refclk", "phy_en_refclk";
+			assigned-clocks = <&serdes_wiz0 TI_WIZ_PLL0_REFCLK>,
+					  <&serdes_wiz0 TI_WIZ_PLL1_REFCLK>,
+					  <&serdes_wiz0 TI_WIZ_REFCLK_DIG>;
+			assigned-clock-parents = <&k3_clks 279 1>,
+						 <&k3_clks 279 1>,
+						 <&k3_clks 279 1>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			#clock-cells = <1>;
+
+			status = "disabled"; /* Needs lane config */
+		};
+	};
 };
 
 /* Main domain overrides */
@@ -83,6 +128,15 @@
 	ti,interrupt-ranges = <7 71 21>;
 };
 
+&main_conf {
+	serdes0_ln_ctrl: mux-controller@...0 {
+		compatible = "reg-mux";
+		reg = <0x4080 0x4>;
+		#mux-control-cells = <1>;
+		mux-reg-masks = <0x0 0x3>; /* SERDES0 lane0 select */
+	};
+};
+
 &oc_sram {
 	reg = <0x00 0x70000000 0x00 0x40000>;
 	ranges = <0x00 0x00 0x70000000 0x40000>;
-- 
2.17.1