linux-kernel - [PATCH 1/6] arm64: dts: ti: k3-j784s4-main: Add system controller and SERDES lane mux

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Date:   Wed, 5 Apr 2023 16:44:07 +0530
From:   Jayesh Choudhary <j-choudhary@...com>
To:     <nm@...com>, <vigneshr@...com>
CC:     <s-vadapalli@...com>, <kristo@...nel.org>, <robh+dt@...nel.org>,
        <krzysztof.kozlowski+dt@...aro.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <j-choudhary@...com>
Subject: [PATCH 1/6] arm64: dts: ti: k3-j784s4-main: Add system controller and SERDES lane mux

From: Siddharth Vadapalli <s-vadapalli@...com>

The system controller node manages the CTRL_MMR0 region.
Add serdes_ln_ctrl node which is used for controlling the SERDES lane mux.

Signed-off-by: Siddharth Vadapalli <s-vadapalli@...com>
Signed-off-by: Jayesh Choudhary <j-choudhary@...com>
---
 arch/arm64/boot/dts/ti/k3-j784s4-main.dtsi | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-j784s4-main.dtsi b/arch/arm64/boot/dts/ti/k3-j784s4-main.dtsi
index e9169eb358c1..344f4ffa0b82 100644
--- a/arch/arm64/boot/dts/ti/k3-j784s4-main.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-j784s4-main.dtsi
@@ -5,6 +5,9 @@
  * Copyright (C) 2022 Texas Instruments Incorporated - https://www.ti.com/
  */
 
+#include <dt-bindings/mux/mux.h>
+#include <dt-bindings/mux/ti-serdes.h>
+
 &cbass_main {
 	msmc_ram: sram@...00000 {
 		compatible = "mmio-sram";
@@ -26,6 +29,25 @@ l3cache-sram@...000 {
 		};
 	};
 
+	scm_conf: scm-conf@...000 {
+		compatible = "ti,j721e-system-controller", "syscon", "simple-mfd";
+		reg = <0x00 0x00100000 0x00 0x1c000>;
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges = <0x00 0x00 0x00100000 0x1c000>;
+
+		serdes_ln_ctrl: mux-controller@...0 {
+			compatible = "mmio-mux";
+			#mux-control-cells = <1>;
+			mux-reg-masks = <0x4080 0x3>, <0x4084 0x3>, /* SERDES0 lane0/1 select */
+					<0x4088 0x3>, <0x408c 0x3>, /* SERDES0 lane2/3 select */
+					<0x4090 0x3>, <0x4094 0x3>, /* SERDES1 lane0/1 select */
+					<0x4098 0x3>, <0x409c 0x3>, /* SERDES1 lane2/3 select */
+					<0x40a0 0x3>, <0x40a4 0x3>, /* SERDES2 lane0/1 select */
+					<0x40a8 0x3>, <0x40ac 0x3>; /* SERDES2 lane2/3 select */
+		};
+	};
+
 	gic500: interrupt-controller@...0000 {
 		compatible = "arm,gic-v3";
 		#address-cells = <2>;
-- 
2.25.1