linux-kernel - [PATCH v3 5/7] arm64: dts: ti: k3-j722s: Add lane mux for Serdes1

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Date: Fri, 24 May 2024 14:35:12 +0530
From: Siddharth Vadapalli <s-vadapalli@...com>
To: <nm@...com>, <vigneshr@...com>, <afd@...com>, <kristo@...nel.org>,
        <robh@...nel.org>, <krzk+dt@...nel.org>, <conor+dt@...nel.org>,
        <rogerq@...nel.org>
CC: <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>, <u-kumar1@...com>,
        <danishanwar@...com>, <srk@...com>, <s-vadapalli@...com>
Subject: [PATCH v3 5/7] arm64: dts: ti: k3-j722s: Add lane mux for Serdes1

The Serdes1 instance of Serdes on J722S SoC can be muxed between PCIe0
and SGMII1. Update the "serdes_ln_ctrl" node adding support for the lane
mux of Serdes1. Additionally, set the default muxing for Serdes1 Lane0 to
PCIe0.

Signed-off-by: Siddharth Vadapalli <s-vadapalli@...com>
---
Current patch is v1. No changelog.

 arch/arm64/boot/dts/ti/k3-j722s-evm.dts   | 3 ++-
 arch/arm64/boot/dts/ti/k3-j722s-main.dtsi | 5 +++--
 2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/arch/arm64/boot/dts/ti/k3-j722s-evm.dts b/arch/arm64/boot/dts/ti/k3-j722s-evm.dts
index a3bda39cc223..16c6ab8ee07e 100644
--- a/arch/arm64/boot/dts/ti/k3-j722s-evm.dts
+++ b/arch/arm64/boot/dts/ti/k3-j722s-evm.dts
@@ -401,7 +401,8 @@ &sdhci1 {
 };
 
 &serdes_ln_ctrl {
-	idle-states = <J722S_SERDES0_LANE0_USB>;
+	idle-states = <J722S_SERDES0_LANE0_USB>,
+		      <J722S_SERDES1_LANE0_PCIE0_LANE0>;
 };
 
 &serdes0 {
diff --git a/arch/arm64/boot/dts/ti/k3-j722s-main.dtsi b/arch/arm64/boot/dts/ti/k3-j722s-main.dtsi
index b069cecebfd9..48b77e476c77 100644
--- a/arch/arm64/boot/dts/ti/k3-j722s-main.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-j722s-main.dtsi
@@ -96,8 +96,9 @@ usb1: usb@...00000{
 &main_conf {
 	serdes_ln_ctrl: mux-controller@...0 {
 		compatible = "reg-mux";
-		reg = <0x4080 0x4>;
+		reg = <0x4080 0x14>;
 		#mux-control-cells = <1>;
-		mux-reg-masks = <0x0 0x3>; /* SERDES0 lane0 select */
+		mux-reg-masks = <0x0 0x3>, /* SERDES0 lane0 select */
+				<0x10 0x3>; /* SERDES1 lane0 select */
 	};
 };
-- 
2.40.1