linux-kernel - Re: [PATCH v5 1/3] PCI: dwc: enable PCI Power Control Slot driver for QCOM

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Message-ID: <g4vti733clyly7uludeypp55s2s3ajznw4g3mjgo3segah3zdm@uixreuvty7px>
Date: Wed, 23 Jul 2025 20:04:46 +0530
From: Manivannan Sadhasivam <mani@...nel.org>
To: Wenbin Yao <quic_wenbyao@...cinc.com>
Cc: lpieralisi@...nel.org, kwilczynski@...nel.org, robh@...nel.org, 
	bhelgaas@...gle.com, sfr@...b.auug.org.au, qiang.yu@....qualcomm.com, 
	linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org, andersson@...nel.org, 
	konradybcio@...nel.org, krzk+dt@...nel.org, conor+dt@...nel.org, 
	linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org, krishna.chundru@....qualcomm.com, 
	quic_vbadigan@...cinc.com, quic_mrana@...cinc.com, quic_cang@...cinc.com
Subject: Re: [PATCH v5 1/3] PCI: dwc: enable PCI Power Control Slot driver
 for QCOM

On Tue, Jul 22, 2025 at 05:11:49PM GMT, Wenbin Yao wrote:
> From: Qiang Yu <qiang.yu@....qualcomm.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 standard PCI slots on some platforms eg. X1E80100-QCP can be
> correctly turned on/off if they are described under PCIe port device tree
> node.
> 
> Signed-off-by: Qiang Yu <qiang.yu@....qualcomm.com>
> Signed-off-by: Wenbin Yao <quic_wenbyao@...cinc.com>
> ---
>  drivers/pci/controller/dwc/Kconfig | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/pci/controller/dwc/Kconfig b/drivers/pci/controller/dwc/Kconfig
> index ff6b6d9e1..deafc512b 100644
> --- a/drivers/pci/controller/dwc/Kconfig
> +++ b/drivers/pci/controller/dwc/Kconfig
> @@ -298,6 +298,7 @@ config PCIE_QCOM
>  	select CRC8
>  	select PCIE_QCOM_COMMON
>  	select PCI_HOST_COMMON
> +	select PCI_PWRCTRL_SLOT

I guess you also need 'if HAVE_PWRCTRL'

- Mani

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