linux-kernel - Re: [PATCH 01/10] dt-bindings: PCI: fsl,imx6q-pcie: Add reset GPIO in Root Port node

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Message-ID: <20260121164002.GA3427694-robh@kernel.org>
Date: Wed, 21 Jan 2026 10:40:02 -0600
From: Rob Herring <robh@...nel.org>
To: Sherry Sun <sherry.sun@....com>
Cc: hongxing.zhu@....com, l.stach@...gutronix.de, bhelgaas@...gle.com,
	lpieralisi@...nel.org, kwilczynski@...nel.org, mani@...nel.org,
	krzk+dt@...nel.org, conor+dt@...nel.org, shawnguo@...nel.org,
	s.hauer@...gutronix.de, festevam@...il.com, frank.li@....com,
	kernel@...gutronix.de, linux-pci@...r.kernel.org,
	devicetree@...r.kernel.org, imx@...ts.linux.dev,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 01/10] dt-bindings: PCI: fsl,imx6q-pcie: Add reset GPIO
 in Root Port node

On Mon, Jan 19, 2026 at 06:02:26PM +0800, Sherry Sun wrote:
> Update the fsl,imx6q-pcie.yaml to include the reset-gpios property in
> the Root Port node.
> 
> There is already 'reset-gpios' property defined for PERST# in
> pci-bus-common.yaml, so use that property instead of 'reset-gpio' in
> this file, for backward compatibility, do not remove the existing
> property in the bridge node, but mark them as 'deprecated' instead.
> 
> Signed-off-by: Sherry Sun <sherry.sun@....com>
> ---
>  .../bindings/pci/fsl,imx6q-pcie.yaml          | 29 +++++++++++++++++++
>  1 file changed, 29 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml b/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml
> index 12a01f7a5744..74156b42e7a2 100644
> --- a/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml
> +++ b/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml
> @@ -59,9 +59,12 @@ properties:
>        - const: dma
>  
>    reset-gpio:
> +    deprecated: true
>      description: Should specify the GPIO for controlling the PCI bus device
>        reset signal. It's not polarity aware and defaults to active-low reset
>        sequence (L=reset state, H=operation state) (optional required).
> +      This property is deprecated, instead of referencing this property from the
> +      host bridge node, use the reset-gpios property from the root port node.
>  
>    reset-gpio-active-high:

Probably this needs to be deprecated too?

>      description: If present then the reset sequence using the GPIO