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[net-next,1/2] dt-bindings: net: snps,dwmac: add phy-supply support

Message ID 20230717164307.2868264-1-m.felsch@pengutronix.de (mailing list archive)
State Superseded
Delegated to: Netdev Maintainers
Headers show
Series [net-next,1/2] dt-bindings: net: snps,dwmac: add phy-supply support | expand

Checks

Context Check Description
netdev/tree_selection success Clearly marked for net-next
netdev/apply fail Patch does not apply to net-next

Commit Message

Marco Felsch July 17, 2023, 4:43 p.m. UTC
Document the common phy-supply property to be able to specify a phy
regulator.

Signed-off-by: Marco Felsch <m.felsch@pengutronix.de>
---
 Documentation/devicetree/bindings/net/snps,dwmac.yaml | 3 +++
 1 file changed, 3 insertions(+)

Comments

Krzysztof Kozlowski July 17, 2023, 4:47 p.m. UTC | #1
On 17/07/2023 18:43, Marco Felsch wrote:
> Document the common phy-supply property to be able to specify a phy
> regulator.
> 
> Signed-off-by: Marco Felsch <m.felsch@pengutronix.de>
> ---
>  Documentation/devicetree/bindings/net/snps,dwmac.yaml | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/net/snps,dwmac.yaml b/Documentation/devicetree/bindings/net/snps,dwmac.yaml
> index 363b3e3ea3a60..f66d1839cf561 100644
> --- a/Documentation/devicetree/bindings/net/snps,dwmac.yaml
> +++ b/Documentation/devicetree/bindings/net/snps,dwmac.yaml
> @@ -159,6 +159,9 @@ properties:
>        can be passive (no SW requirement), and requires that the MAC operate
>        in a different mode than the PHY in order to function.
>  
> +  phy-supply:
> +    description: PHY regulator
> +

Isn't this property of the PHY? Why would the Ethernet controller play
with a supply of a phy?

Best regards,
Krzysztof
Marco Felsch July 17, 2023, 4:57 p.m. UTC | #2
On 23-07-17, Krzysztof Kozlowski wrote:
> On 17/07/2023 18:43, Marco Felsch wrote:
> > Document the common phy-supply property to be able to specify a phy
> > regulator.
> > 
> > Signed-off-by: Marco Felsch <m.felsch@pengutronix.de>
> > ---
> >  Documentation/devicetree/bindings/net/snps,dwmac.yaml | 3 +++
> >  1 file changed, 3 insertions(+)
> > 
> > diff --git a/Documentation/devicetree/bindings/net/snps,dwmac.yaml b/Documentation/devicetree/bindings/net/snps,dwmac.yaml
> > index 363b3e3ea3a60..f66d1839cf561 100644
> > --- a/Documentation/devicetree/bindings/net/snps,dwmac.yaml
> > +++ b/Documentation/devicetree/bindings/net/snps,dwmac.yaml
> > @@ -159,6 +159,9 @@ properties:
> >        can be passive (no SW requirement), and requires that the MAC operate
> >        in a different mode than the PHY in order to function.
> >  
> > +  phy-supply:
> > +    description: PHY regulator
> > +
> 
> Isn't this property of the PHY? Why would the Ethernet controller play
> with a supply of a phy?

Because this is the current state. Please check the all other MACs
handling the phy-supply (if supported). Some of them handling it under
the mdio-node (not the phy-node) but most bindings do specify this on
MAC level (e.g. FEC, DWMAC (suni, rk)).

I agree that the phy sould handle this but this would be a lot more
effort and since the dwmac-sun8i/rk bindings do support this on MAC
level I would keep it that way.

Regards,
  Marco
Krzysztof Kozlowski July 18, 2023, 7:59 a.m. UTC | #3
On 17/07/2023 18:57, Marco Felsch wrote:
> On 23-07-17, Krzysztof Kozlowski wrote:
>> On 17/07/2023 18:43, Marco Felsch wrote:
>>> Document the common phy-supply property to be able to specify a phy
>>> regulator.
>>>
>>> Signed-off-by: Marco Felsch <m.felsch@pengutronix.de>
>>> ---
>>>  Documentation/devicetree/bindings/net/snps,dwmac.yaml | 3 +++
>>>  1 file changed, 3 insertions(+)
>>>
>>> diff --git a/Documentation/devicetree/bindings/net/snps,dwmac.yaml b/Documentation/devicetree/bindings/net/snps,dwmac.yaml
>>> index 363b3e3ea3a60..f66d1839cf561 100644
>>> --- a/Documentation/devicetree/bindings/net/snps,dwmac.yaml
>>> +++ b/Documentation/devicetree/bindings/net/snps,dwmac.yaml
>>> @@ -159,6 +159,9 @@ properties:
>>>        can be passive (no SW requirement), and requires that the MAC operate
>>>        in a different mode than the PHY in order to function.
>>>  
>>> +  phy-supply:
>>> +    description: PHY regulator
>>> +
>>
>> Isn't this property of the PHY? Why would the Ethernet controller play
>> with a supply of a phy?
> 
> Because this is the current state. Please check the all other MACs
> handling the phy-supply (if supported). Some of them handling it under
> the mdio-node (not the phy-node) but most bindings do specify this on
> MAC level (e.g. FEC, DWMAC (suni, rk)).
> 
> I agree that the phy sould handle this but this would be a lot more
> effort and since the dwmac-sun8i/rk bindings do support this on MAC
> level I would keep it that way.

Indeed phy bindings do not allow a supply.

Best regards,
Krzysztof
Krzysztof Kozlowski July 18, 2023, 8 a.m. UTC | #4
On 17/07/2023 18:43, Marco Felsch wrote:
> Document the common phy-supply property to be able to specify a phy
> regulator.
> 
> Signed-off-by: Marco Felsch <m.felsch@pengutronix.de>
> ---


Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

Best regards,
Krzysztof
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/net/snps,dwmac.yaml b/Documentation/devicetree/bindings/net/snps,dwmac.yaml
index 363b3e3ea3a60..f66d1839cf561 100644
--- a/Documentation/devicetree/bindings/net/snps,dwmac.yaml
+++ b/Documentation/devicetree/bindings/net/snps,dwmac.yaml
@@ -159,6 +159,9 @@  properties:
       can be passive (no SW requirement), and requires that the MAC operate
       in a different mode than the PHY in order to function.
 
+  phy-supply:
+    description: PHY regulator
+
   snps,axi-config:
     $ref: /schemas/types.yaml#/definitions/phandle
     description: