linux-kernel - [PATCH 2/3] arm64: dts: ti: k3-j784s4-j742s2-evm-common: Add bootph-all tag to SERDES0

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Message-ID: <20251017084654.2929945-3-h-salunke@ti.com>
Date: Fri, 17 Oct 2025 14:16:53 +0530
From: Hrushikesh Salunke <h-salunke@...com>
To: <nm@...com>, <vigneshr@...com>, <kristo@...nel.org>, <robh@...nel.org>,
        <krzk+dt@...nel.org>, <conor+dt@...nel.org>
CC: <s-vadapalli@...com>, <danishanwar@...com>,
        <linux-arm-kernel@...ts.infradead.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH 2/3] arm64: dts: ti: k3-j784s4-j742s2-evm-common: Add bootph-all tag to SERDES0

J784S4 SoC has two instances of PCIe which are PCIe0 and PCIe1. PCIe1
instance is used for PCIe boot process. J784S4 SoC has four instances
of 4-lane SERDES. Out of which SERDES0 is used as PHY for PCIe1. So it
needs to be functional at all stages of PCIe boot process. Thus add the
"bootph-all" boot phase tag to nodes required to enable SERDES0 at all
boot stages.

Signed-off-by: Hrushikesh Salunke <h-salunke@...com>
---
 arch/arm64/boot/dts/ti/k3-j784s4-j742s2-evm-common.dtsi | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-j784s4-j742s2-evm-common.dtsi b/arch/arm64/boot/dts/ti/k3-j784s4-j742s2-evm-common.dtsi
index 419c1a70e028..31a8dea2fa8f 100644
--- a/arch/arm64/boot/dts/ti/k3-j784s4-j742s2-evm-common.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-j784s4-j742s2-evm-common.dtsi
@@ -970,6 +970,7 @@ adc {
 &serdes_refclk {
 	status = "okay";
 	clock-frequency = <100000000>;
+	bootph-all;
 };
 
 &dss {
@@ -984,6 +985,10 @@ &dss {
 				 <&k3_clks 218 22>;
 };
 
+&serdes_ln_ctrl {
+	bootph-all;
+};
+
 &serdes0 {
 	status = "okay";
 
@@ -993,6 +998,7 @@ serdes0_pcie1_link: phy@0 {
 		#phy-cells = <0>;
 		cdns,phy-type = <PHY_TYPE_PCIE>;
 		resets = <&serdes_wiz0 1>, <&serdes_wiz0 2>;
+		bootph-all;
 	};
 
 	serdes0_usb_link: phy@3 {
-- 
2.34.1