linux-kernel - Re: [PATCH] schemas: PCI: Add standard PCIe WAKE# signal

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Message-ID: <e840e6b6-f2c1-9e85-bfb3-fba1471dad32@oss.qualcomm.com>
Date: Wed, 28 May 2025 10:20:24 +0530
From: Krishna Chaitanya Chundru <krishna.chundru@....qualcomm.com>
To: robh@...nel.org
Cc: linux-arm-msm@...r.kernel.org, helgaas@...nel.org, krzk@...nel.org,
        manivannan.sadhasivam@...aro.org, devicetree@...r.kernel.org,
        dmitry.baryshkov@...aro.org, lpieralisi@...nel.org, kw@...ux.com,
        conor+dt@...nel.org, linux-pci@...r.kernel.org,
        linux-kernel@...r.kernel.org, devicetree-spec@...r.kernel.org,
        quic_vbadigan@...cinc.com, andersson@...nel.org, sherry.sun@....com
Subject: Re: [PATCH] schemas: PCI: Add standard PCIe WAKE# signal


On 5/15/2025 2:35 PM, Krishna Chaitanya Chundru wrote:
> As per PCIe spec 6, sec 5.3.3.2 document PCI standard WAKE# signal,
> which is used to re-establish power and reference clocks to the
> components within its domain.
> 
Hi Rob,

can you check this patch once.

- Krishna Chaitanya.
> Signed-off-by: Krishna Chaitanya Chundru <krishna.chundru@....qualcomm.com>
> ---
>   dtschema/schemas/pci/pci-bus-common.yaml | 4 ++++
>   1 file changed, 4 insertions(+)
> 
> diff --git a/dtschema/schemas/pci/pci-bus-common.yaml b/dtschema/schemas/pci/pci-bus-common.yaml
> index ca97a00..a39fafc 100644
> --- a/dtschema/schemas/pci/pci-bus-common.yaml
> +++ b/dtschema/schemas/pci/pci-bus-common.yaml
> @@ -142,6 +142,10 @@ properties:
>       description: GPIO controlled connection to PERST# signal
>       maxItems: 1
>   
> +  wake-gpios:
> +    description: GPIO controlled connection to WAKE# signal
> +    maxItems: 1
> +
>     slot-power-limit-milliwatt:
>       description:
>         If present, specifies slot power limit in milliwatts.