linux-kernel - [PATCH v1 1/3] arm64: defconfig: enable PCI Power Control for PCIe3

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Message-Id: <20250320055502.274849-2-quic_wenbyao@quicinc.com>
Date: Thu, 20 Mar 2025 13:55:00 +0800
From: Wenbin Yao <quic_wenbyao@...cinc.com>
To: andersson@...nel.org, konradybcio@...nel.org, robh@...nel.org,
        krzk+dt@...nel.org, conor+dt@...nel.org, linux-arm-msm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        catalin.marinas@....com, will@...nel.org, quic_qianyu@...cinc.com,
        sfr@...b.auug.org.au, linux-arm-kernel@...ts.infradead.org
Cc: quic_wenbyao@...cinc.com
Subject: [PATCH v1 1/3] arm64: defconfig: enable PCI Power Control for PCIe3

From: Qiang Yu <quic_qianyu@...cinc.com>

Enable the pwrctrl driver, which is utilized to manage the power supplies
of the devices connected to the PCI slots. This ensures that the voltage
rails of the x8 PCI slots on the X1E80100 - QCP can be correctly turned
on/off if they are described under PCIe port device tree node.

Signed-off-by: Qiang Yu <quic_qianyu@...cinc.com>
Signed-off-by: Wenbin Yao <quic_wenbyao@...cinc.com>
---
 arch/arm64/configs/defconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig
index 85ec2fba1..de86d1121 100644
--- a/arch/arm64/configs/defconfig
+++ b/arch/arm64/configs/defconfig
@@ -245,6 +245,7 @@ CONFIG_PCIE_LAYERSCAPE_GEN4=y
 CONFIG_PCI_ENDPOINT=y
 CONFIG_PCI_ENDPOINT_CONFIGFS=y
 CONFIG_PCI_EPF_TEST=m
+CONFIG_PCI_PWRCTL_SLOT=y
 CONFIG_DEVTMPFS=y
 CONFIG_DEVTMPFS_MOUNT=y
 CONFIG_FW_LOADER_USER_HELPER=y
-- 
2.34.1