| Message ID | 20231113204052.43688-1-festevam@gmail.com (mailing list archive) |
|---|---|
| State | Changes Requested |
| Delegated to: | Netdev Maintainers |
| Headers | show |
| Series | [net-next] dt-bindings: net: snps,dwmac: Do not make 'phy-mode' required | expand |
On Mon, Nov 13, 2023 at 05:40:52PM -0300, Fabio Estevam wrote: > From: Fabio Estevam <festevam@denx.de> > > The property 'phy-connection-type' can also be used to describe > the interface type between the Ethernet device and the Ethernet PHY > device. > > Mark 'phy-mode' as a non required property. Hi Fabio What does the driver actually require? Will it error out if neither is provided? Maybe we should be changing the condition that one or the other is required? Andrew
On 11/13/23 13:51, Andrew Lunn wrote: > On Mon, Nov 13, 2023 at 05:40:52PM -0300, Fabio Estevam wrote: >> From: Fabio Estevam <festevam@denx.de> >> >> The property 'phy-connection-type' can also be used to describe >> the interface type between the Ethernet device and the Ethernet PHY >> device. >> >> Mark 'phy-mode' as a non required property. > > Hi Fabio > > What does the driver actually require? Will it error out if neither is > provided? > > Maybe we should be changing the condition that one or the other is > required? 'phy-connection-type' is the deprecated version of 'phy-mode' which of_get_phy_mode() will fall back to if 'phy-mode' is not provided. It does not appear that stmmac attempts to use anything other than of_get_phy_mode() therefore would not it be acceptable to update the relevant .dts file such that it uses 'phy-mode'? That really should not have a functional impact given that of_get_phy_mode() has worked that way for a while.
On Mon, Nov 13, 2023 at 02:03:00PM -0800, Florian Fainelli wrote: > On 11/13/23 13:51, Andrew Lunn wrote: > > On Mon, Nov 13, 2023 at 05:40:52PM -0300, Fabio Estevam wrote: > > > From: Fabio Estevam <festevam@denx.de> > > > > > > The property 'phy-connection-type' can also be used to describe > > > the interface type between the Ethernet device and the Ethernet PHY > > > device. > > > > > > Mark 'phy-mode' as a non required property. > > > > Hi Fabio > > > > What does the driver actually require? Will it error out if neither is > > provided? > > > > Maybe we should be changing the condition that one or the other is > > required? Hi Florian > 'phy-connection-type' is the deprecated version of 'phy-mode' I thought that too, but Documentation/devicetree/bindings/net/ethernet-controller.yaml does not mark it deprecated. The original .txt file has a different wording: - phy-mode: string, operation mode of the PHY interface. This is now a de-facto standard property; supported values are: * "internal" (Internal means there is not a standard bus between the MAC and the PHY, something proprietary is being used to embed the PHY in the MAC.) * "mii" * "gmii" - phy-connection-type: the same as "phy-mode" property but described in the Devicetree Specification; So it could technically be we cannot deprecate phy-connection-type because it is part of the standard, and we need to accept it. > which > of_get_phy_mode() will fall back to if 'phy-mode' is not provided. It does > not appear that stmmac attempts to use anything other than of_get_phy_mode() > therefore would not it be acceptable to update the relevant .dts file such > that it uses 'phy-mode'? Using phy-mode would be more consistent, since its used > 10x more than phy-connection-type. Andrew
Hi Andrew and Florian, On Mon, Nov 13, 2023 at 7:23 PM Andrew Lunn <andrew@lunn.ch> wrote: > Using phy-mode would be more consistent, since its used > 10x more > than phy-connection-type. Thanks for the suggestion. I will change the dts to use phy-mode then. Thanks
diff --git a/Documentation/devicetree/bindings/net/snps,dwmac.yaml b/Documentation/devicetree/bindings/net/snps,dwmac.yaml index 5c2769dc689a..6c0d9e694d76 100644 --- a/Documentation/devicetree/bindings/net/snps,dwmac.yaml +++ b/Documentation/devicetree/bindings/net/snps,dwmac.yaml @@ -505,6 +505,10 @@ properties: required: - compatible + phy-connection-type: true + + phy-mode: true + stmmac-axi-config: type: object unevaluatedProperties: false @@ -564,7 +568,6 @@ required: - reg - interrupts - interrupt-names - - phy-mode dependencies: snps,reset-active-low: ["snps,reset-gpio"]