linux-kernel - [PATCH v2 09/13] arm64: dts: qcom: sa8775p: Add 'linux,pci-domain' to PCIe EP controller nodes

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Message-Id: <20240717-pci-qcom-hotplug-v2-9-71d304b817f8@linaro.org>
Date: Wed, 17 Jul 2024 22:33:14 +0530
From: Manivannan Sadhasivam via B4 Relay <devnull+manivannan.sadhasivam.linaro.org@...nel.org>
To: Lorenzo Pieralisi <lpieralisi@...nel.org>, 
 Krzysztof Wilczyński <kw@...ux.com>, 
 Rob Herring <robh@...nel.org>, Bjorn Helgaas <bhelgaas@...gle.com>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, 
 Kishon Vijay Abraham I <kishon@...nel.org>, 
 Bjorn Andersson <andersson@...nel.org>, 
 Konrad Dybcio <konrad.dybcio@...aro.org>
Cc: linux-pci@...r.kernel.org, linux-arm-msm@...r.kernel.org, 
 linux-kernel@...r.kernel.org, devicetree@...r.kernel.org, 
 Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
Subject: [PATCH v2 09/13] arm64: dts: qcom: sa8775p: Add 'linux,pci-domain'
 to PCIe EP controller nodes

From: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>

'linux,pci-domain' property provides the PCI domain number for the PCI
endpoint controllers in a SoC. If this property is not present, then an
unstable (across boots) unique number will be assigned.

Use this property to specify the domain number based on the actual hardware
instance of the PCI endpoint controllers in SA8775P SoC.

Reviewed-by: Konrad Dybcio <konrad.dybcio@...aro.org>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
---
 arch/arm64/boot/dts/qcom/sa8775p.dtsi | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sa8775p.dtsi b/arch/arm64/boot/dts/qcom/sa8775p.dtsi
index 23f1b2e5e624..198b39abde97 100644
--- a/arch/arm64/boot/dts/qcom/sa8775p.dtsi
+++ b/arch/arm64/boot/dts/qcom/sa8775p.dtsi
@@ -4618,6 +4618,7 @@ pcie0_ep: pcie-ep@...0000 {
 		phy-names = "pciephy";
 		max-link-speed = <3>; /* FIXME: Limiting the Gen speed due to stability issues */
 		num-lanes = <2>;
+		linux,pci-domain = <0>;
 
 		status = "disabled";
 	};
@@ -4775,6 +4776,7 @@ pcie1_ep: pcie-ep@...0000 {
 		phy-names = "pciephy";
 		max-link-speed = <3>; /* FIXME: Limiting the Gen speed due to stability issues */
 		num-lanes = <4>;
+		linux,pci-domain = <1>;
 
 		status = "disabled";
 	};

-- 
2.25.1