linux-kernel - [RFC,v14 4/5] arm64: tegra: Add PCIe port node with PCIe WAKE# for C1 controller

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Date:   Wed, 8 Feb 2023 16:46:44 +0530
From:   Manikanta Maddireddy <mmaddireddy@...dia.com>
To:     <bhelgaas@...gle.com>, <thierry.reding@...il.com>,
        <petlozup@...dia.com>, <rafael.j.wysocki@...el.com>,
        <lpieralisi@...nel.org>, <robh@...nel.org>,
        <jeffy.chen@...k-chips.com>
CC:     <krzysztof.kozlowski+dt@...aro.org>, <jonathanh@...dia.com>,
        <dmitry.osipenko@...labora.com>, <viresh.kumar@...aro.org>,
        <gregkh@...uxfoundation.org>, <steven.price@....com>,
        <kw@...ux.com>, <linux-pci@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-tegra@...r.kernel.org>, <linux-pm@...r.kernel.org>,
        <vidyas@...dia.com>, Manikanta Maddireddy <mmaddireddy@...dia.com>
Subject: [RFC,v14 4/5] arm64: tegra: Add PCIe port node with PCIe WAKE# for C1 controller

Add PCIe port node under the PCIe controller-1 device tree node to support
PCIe WAKE# interrupt for WiFi.

Signed-off-by: Manikanta Maddireddy <mmaddireddy@...dia.com>
---

Changes in v14:
New patch in the series to support PCIe WAKE# in NVIDIA Jetson AGX Orin.

 .../dts/nvidia/tegra234-p3737-0000+p3701-0000.dts     | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/arch/arm64/boot/dts/nvidia/tegra234-p3737-0000+p3701-0000.dts b/arch/arm64/boot/dts/nvidia/tegra234-p3737-0000+p3701-0000.dts
index 8a9747855d6b..9c89be263141 100644
--- a/arch/arm64/boot/dts/nvidia/tegra234-p3737-0000+p3701-0000.dts
+++ b/arch/arm64/boot/dts/nvidia/tegra234-p3737-0000+p3701-0000.dts
@@ -2147,6 +2147,17 @@ pcie@...00000 {
 
 			phys = <&p2u_hsio_3>;
 			phy-names = "p2u-0";
+
+			pci@0,0 {
+				reg = <0x0000 0 0 0 0>;
+				#address-cells = <3>;
+				#size-cells = <2>;
+				ranges;
+
+				interrupt-parent = <&gpio>;
+				interrupts = <TEGRA234_MAIN_GPIO(L, 2) IRQ_TYPE_LEVEL_LOW>;
+				interrupt-names = "wakeup";
+			};
 		};
 
 		pcie@...60000 {
-- 
2.25.1