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

[Wenbin Yao (Consultant)]

On 3/21/2025 6:01 AM, Bryan O'Donoghue wrote:
> On 20/03/2025 05:55, Wenbin Yao wrote:
>> From: Qiang Yu <quic_qianyu at quicinc.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 at quicinc.com>
>> Signed-off-by: Wenbin Yao <quic_wenbyao at quicinc.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
>>
>>
>
> PCI_PWRCTL_SLOT is a tristate symbol why be a "y" instead of an "m" 
> i.e. compile this into the kernel instead of having it be a module ?

It can be compiled as module if this is preferred.

>
> ---
> bod

-- 
With best wishes
Wenbin