Re: [PATCH 1/2] dt-bindings: PCI: fsl,imx6q-pcie: Switch to undeprecated reset-gpios

[Krzysztof Kozlowski]

On 12/03/2026 17:29, Krzysztof Kozlowski wrote:
> On 12/03/2026 10:18, Sherry Sun wrote:
>>> Subject: [PATCH 1/2] dt-bindings: PCI: fsl,imx6q-pcie: Switch to undeprecated
>>> reset-gpios
>>>
>>> GPIOs with "gpio" suffix were long time ago deprecated, thus "reset-gpios" should
>>> be used.  Linux kernel supports both, referenced schema snps,dw-pcie-
>>> common.yaml lists both as well and this schema uses
>>> unevaluatedProperties:false, thus change has no impact except code readability
>>> and removing deprecated patterns.
>>>
>>> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxxxxxxxx>
>>> ---
>>>  Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml | 5 -----
>>>  1 file changed, 5 deletions(-)
>>>
>>> diff --git a/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml
>>> b/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml
>>> index 12a01f7a5744..b9ba938c6239 100644
>>> --- a/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml
>>> +++ b/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml
>>> @@ -58,11 +58,6 @@ properties:
>>>        - const: msi
>>>        - const: dma
>>>
>>> -  reset-gpio:
>>> -    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).
>>> -
>>
>> Add Dmitry and Bartosz.
>>
>> Hi Krzysztof,
>> Seems this property is still handled in gpiolib-of.c, see commit b8b80348c57b
>> ("gpiolib: of: add polarity quirk for Freescale PCIe controller").
>> Maybe need to change the quirk gpio_propname here too.
> 
> Oh, I missed that completely. Thanks for mentioning it.
> 
> 1. Having this property in drivers/gpio/gpiolib-of.c means we should
> keep it in the schema as deprecated, because each ABI should be documented.
> 
> 2. I can drop reset-gpio-active-high from DTS as well, because
> reset-gpios have proper flag.
> 
> 3. We don't need to update gpiolib-of.c, because standard flag from
> reset-gpios will be used.
> 
>>
>>
>>>    reset-gpio-active-high:
>>>      description: If present then the reset sequence using the GPIO
>>>        specified in the "reset-gpio" property is reversed (H=reset state,
>>
>>  Also change the "reset-gpio" to "reset-gpios" in this description.
>>
> 
> Also here - no need to update, because this will be used only for
> reset-gpio.

I will send a v2.

Best regards,
Krzysztof