linux-kernel - Re: [PATCH v7 7/8] arm64: defconfig: Enable TC9563 PWRCTL driver

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Message-ID: <CAMRc=McWw6tAjjaa6wst6y3+Dw=JT8446wwvQ0_c5LHHm=1Y-Q@mail.gmail.com>
Date: Wed, 29 Oct 2025 14:15:37 +0100
From: Bartosz Golaszewski <brgl@...ev.pl>
To: Krishna Chaitanya Chundru <krishna.chundru@....qualcomm.com>
Cc: Bjorn Helgaas <bhelgaas@...gle.com>, Lorenzo Pieralisi <lpieralisi@...nel.org>, 
	Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>, 
	chaitanya chundru <quic_krichai@...cinc.com>, Bjorn Andersson <andersson@...nel.org>, 
	Konrad Dybcio <konradybcio@...nel.org>, cros-qcom-dts-watchers@...omium.org, 
	Jingoo Han <jingoohan1@...il.com>, Krzysztof Wilczyński <kwilczynski@...nel.org>, 
	Manivannan Sadhasivam <mani@...nel.org>, Catalin Marinas <catalin.marinas@....com>, Will Deacon <will@...nel.org>, 
	quic_vbadigan@...cnic.com, amitk@...nel.org, linux-pci@...r.kernel.org, 
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
	linux-arm-msm@...r.kernel.org, jorge.ramirez@....qualcomm.com, 
	linux-arm-kernel@...ts.infradead.org, Dmitry Baryshkov <lumag@...nel.org>
Subject: Re: [PATCH v7 7/8] arm64: defconfig: Enable TC9563 PWRCTL driver

On Wed, Oct 29, 2025 at 12:30 PM Krishna Chaitanya Chundru
<krishna.chundru@....qualcomm.com> wrote:
>
> Enable TC9563 PCIe switch pwrctl driver by default. This is needed
> to power the PCIe switch which is present in Qualcomm RB3gen2 platform.
> Without this the switch will not powered up and we can't use the
> endpoints connected to the switch.
>
> Signed-off-by: Krishna Chaitanya Chundru <krishna.chundru@....qualcomm.com>
> ---
>  arch/arm64/configs/defconfig | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig
> index e3a2d37bd10423b028f59dc40d6e8ee1c610d6b8..fe5c9951c437a67ac76bf939a9e436eafa3820bf 100644
> --- a/arch/arm64/configs/defconfig
> +++ b/arch/arm64/configs/defconfig
> @@ -249,6 +249,7 @@ CONFIG_PCIE_LAYERSCAPE_GEN4=y
>  CONFIG_PCI_ENDPOINT=y
>  CONFIG_PCI_ENDPOINT_CONFIGFS=y
>  CONFIG_PCI_EPF_TEST=m
> +CONFIG_PCI_PWRCTRL_TC9563=m
>  CONFIG_DEVTMPFS=y
>  CONFIG_DEVTMPFS_MOUNT=y
>  CONFIG_FW_LOADER_USER_HELPER=y
>
> --
> 2.34.1
>

Can't we just do the following in the respective Kconfig entry?

config PCI_PWRCTRL_TC9563
    tristate ...
    default m if ARCH_QCOM

Bart