linux-kernel - [PATCH v2 5/5] arm64: dts: ti: k3-am64: Add PCIe ctrl node to main

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Message-ID: <20250402113201.151195-6-j-choudhary@ti.com>
Date: Wed, 2 Apr 2025 17:02:01 +0530
From: Jayesh Choudhary <j-choudhary@...com>
To: <robh@...nel.org>, <krzk+dt@...nel.org>, <conor+dt@...nel.org>,
        <nm@...com>, <vigneshr@...com>, <afd@...com>, <s-vadapalli@...com>,
        <linux-kernel@...r.kernel.org>
CC: <kristo@...nel.org>, <rogerq@...nel.org>, <kishon@...nel.org>,
        <devicetree@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>,
        <j-choudhary@...com>
Subject: [PATCH v2 5/5] arm64: dts: ti: k3-am64: Add PCIe ctrl node to main_conf region

From: Andrew Davis <afd@...com>

This region is used for controlling the function of the PCIe IP. It is
compatible with "ti,j784s4-pcie-ctrl", add this here and use it with
the PCIe node.

Signed-off-by: Andrew Davis <afd@...com>
[j-choudhary@...com: Add changes to k3-am642-evm-pcie0-ep.dtso]
Signed-off-by: Jayesh Choudhary <j-choudhary@...com>
---
 arch/arm64/boot/dts/ti/k3-am64-main.dtsi          | 7 ++++++-
 arch/arm64/boot/dts/ti/k3-am642-evm-pcie0-ep.dtso | 2 +-
 2 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/boot/dts/ti/k3-am64-main.dtsi b/arch/arm64/boot/dts/ti/k3-am64-main.dtsi
index 324eb44c258d..d872a624601c 100644
--- a/arch/arm64/boot/dts/ti/k3-am64-main.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am64-main.dtsi
@@ -51,6 +51,11 @@ chipid@14 {
 			reg = <0x00000014 0x4>;
 		};
 
+		pcie0_ctrl: pcie-ctrl@...0 {
+			compatible = "ti,j784s4-pcie-ctrl", "syscon";
+			reg = <0x4070 0x4>;
+		};
+
 		serdes_ln_ctrl: mux-controller@...0 {
 			compatible = "reg-mux";
 			reg = <0x4080 0x4>;
@@ -1036,7 +1041,7 @@ pcie0_rc: pcie@...2000 {
 		interrupt-names = "link_state";
 		interrupts = <GIC_SPI 203 IRQ_TYPE_EDGE_RISING>;
 		device_type = "pci";
-		ti,syscon-pcie-ctrl = <&main_conf 0x4070>;
+		ti,syscon-pcie-ctrl = <&pcie0_ctrl 0x0>;
 		max-link-speed = <2>;
 		num-lanes = <1>;
 		power-domains = <&k3_pds 114 TI_SCI_PD_EXCLUSIVE>;
diff --git a/arch/arm64/boot/dts/ti/k3-am642-evm-pcie0-ep.dtso b/arch/arm64/boot/dts/ti/k3-am642-evm-pcie0-ep.dtso
index 6b029539e0db..432751774853 100644
--- a/arch/arm64/boot/dts/ti/k3-am642-evm-pcie0-ep.dtso
+++ b/arch/arm64/boot/dts/ti/k3-am642-evm-pcie0-ep.dtso
@@ -46,6 +46,6 @@ pcie0_ep: pcie-ep@...2000 {
 		max-functions = /bits/ 8 <1>;
 		phys = <&serdes0_pcie_link>;
 		phy-names = "pcie-phy";
-		ti,syscon-pcie-ctrl = <&main_conf 0x4070>;
+		ti,syscon-pcie-ctrl = <&pcie0_ctrl 0x0>;
 	};
 };
-- 
2.34.1