| Message ID | 20230916110902.234273-8-arinc.unal@arinc9.com |
|---|---|
| State | New |
| Headers | show |
| Series | [net-next,v2,01/10] net: dsa: mt7530: register OF node for internal MDIO bus | expand |
On 21.09.2023 16:00, Andrew Lunn wrote: >> - Link descriptions must be required on ethernet controllers. We don't care >> whether some Linux driver can or cannot find the PHY or set up a fixed >> link without looking at the devicetree. > > That can lead to future surprises, and breakage. > > Something which is not used is not tested, and so sometimes wrong, and > nobody knows. Say the driver is extended to a new device and actually > does need to use this never before used information. You then find it > is wrong, and you get a regression. > > We have had issues like this before. There are four rgmii phy-link > modes. We have had PHY drivers which ignored one of those modes, it > silently accepted it, but did not change the hardware to actually use > that mode. The PHY continues to use its reset defaults or strapping, > and it worked. A lot of device trees ended up using this mode. And it > was not the same as reset defaults/strapping. > > And then somebody needed that fourth mode, and made it actually > work. And all those boards wrongly using that mode broke. > > The lesson i learned from that episode is that anything in device tree > must actually be used and tested. It looks like the root cause here was the lack of dt-bindings to only allow the phy-mode values the hardware supports. What I see here is the driver change should've been tested on all different hardware the driver controls then the improper describing of hardware on the devicetree source file addressed. If a devicetree change that ensures proper describing of hardware is found to break a driver in the future, then that exposes a bug on the driver and the driver will have to be fixed. I don't see this upholding writing dt-bindings that ensures proper describing of the hardware. > >> Although I see dsa.yaml and dsa-port.yaml mostly consist of describing an >> ethernet switch with CPU port(s), there're properties that are specific to >> DSA, such as dsa,member on dsa.yaml and dsa-tag-protocol and label on >> dsa-port.yaml. > > I would say dsa,member does describe the hardware. It provides two > bits of information: > > Which cluster of switches does this switch belong to. You probably can > derive it using the DSA links between switches, which is also a > hardware property. But having it in device tree makes it simpler. > > Which switch is this within a cluster. You need to be able to say: > Send this frame out Port X of switch Y. How does a switch know it is > Y? It could be strapping, which is clearly a hardware property. > > dsa-tag-protocol is similar to phy-mode. It tells you the protocol > running between the CPU port and the SoC master interface. You often > can imply it, but again, it could be determined by strapping on the > switch. > > label is an interesting one, and probably would not be accepted if it > was proposed now. But it has been around a long time. It also does > describe the hardware, it is what is printed on the case next to the > RJ45. To make the user experience simpler, we then try to make the > linux interface name match the label on the case. Looks like we can incorporate dsa.port and dsa-port.yaml into ethernet-switch.yaml and ethernet-switch-port.yaml with adjustments. Arınç
On Thu, Sep 21, 2023 at 09:21:40PM +0300, Arınç ÜNAL wrote: > On 21.09.2023 16:00, Andrew Lunn wrote: > > > - Link descriptions must be required on ethernet controllers. We don't care > > > whether some Linux driver can or cannot find the PHY or set up a fixed > > > link without looking at the devicetree. > > > > That can lead to future surprises, and breakage. > > > > Something which is not used is not tested, and so sometimes wrong, and > > nobody knows. Say the driver is extended to a new device and actually > > does need to use this never before used information. You then find it > > is wrong, and you get a regression. > > > > We have had issues like this before. There are four rgmii phy-link > > modes. We have had PHY drivers which ignored one of those modes, it > > silently accepted it, but did not change the hardware to actually use > > that mode. The PHY continues to use its reset defaults or strapping, > > and it worked. A lot of device trees ended up using this mode. And it > > was not the same as reset defaults/strapping. > > > > And then somebody needed that fourth mode, and made it actually > > work. And all those boards wrongly using that mode broke. > > > > The lesson i learned from that episode is that anything in device tree > > must actually be used and tested. > > It looks like the root cause here was the lack of dt-bindings to > only allow the phy-mode values the hardware supports. That would not help. The hardware supported all 4 RGMII modes. So listing all four in the dt-binding would be correct. But the driver for the hardware had a bug, and so silently ignored one of the modes. That then masked the bugs in board DT files. > What I see here is the driver change should've been tested on all > different hardware the driver controls then the improper describing > of hardware on the devicetree source file addressed. Which is what did happen. But it took a while to find all those broken boards. For a period of time, we had regressions. Bugs happen. It is a fact of life. But we want those bugs to be easy to find as possible. If we force DT writers to add properties which the driver never uses, they are going to be bugs in those properties. And those bugs are not going to be easy to find, and quite likely, they will only be found a long time after they are added. We should not be adding unused properties and bugs just to keep a yaml checker happy. Andrew
On 22.09.2023 02:29, Andrew Lunn wrote: > On Thu, Sep 21, 2023 at 09:21:40PM +0300, Arınç ÜNAL wrote: >> On 21.09.2023 16:00, Andrew Lunn wrote: >>>> - Link descriptions must be required on ethernet controllers. We don't care >>>> whether some Linux driver can or cannot find the PHY or set up a fixed >>>> link without looking at the devicetree. >>> >>> That can lead to future surprises, and breakage. >>> >>> Something which is not used is not tested, and so sometimes wrong, and >>> nobody knows. Say the driver is extended to a new device and actually >>> does need to use this never before used information. You then find it >>> is wrong, and you get a regression. >>> >>> We have had issues like this before. There are four rgmii phy-link >>> modes. We have had PHY drivers which ignored one of those modes, it >>> silently accepted it, but did not change the hardware to actually use >>> that mode. The PHY continues to use its reset defaults or strapping, >>> and it worked. A lot of device trees ended up using this mode. And it >>> was not the same as reset defaults/strapping. >>> >>> And then somebody needed that fourth mode, and made it actually >>> work. And all those boards wrongly using that mode broke. >>> >>> The lesson i learned from that episode is that anything in device tree >>> must actually be used and tested. >> >> It looks like the root cause here was the lack of dt-bindings to >> only allow the phy-mode values the hardware supports. > > That would not help. The hardware supported all 4 RGMII modes. So > listing all four in the dt-binding would be correct. But the driver > for the hardware had a bug, and so silently ignored one of the > modes. That then masked the bugs in board DT files. > >> What I see here is the driver change should've been tested on all >> different hardware the driver controls then the improper describing >> of hardware on the devicetree source file addressed. > > Which is what did happen. But it took a while to find all those broken > boards. For a period of time, we had regressions. > > Bugs happen. It is a fact of life. But we want those bugs to be easy > to find as possible. If we force DT writers to add properties which > the driver never uses, they are going to be bugs in those > properties. And those bugs are not going to be easy to find, and quite > likely, they will only be found a long time after they are added. We > should not be adding unused properties and bugs just to keep a yaml > checker happy. Understood. Then I will refrain from enforcing link descriptions altogether as I can't justify enforcing them on ethernet controllers selectively because certain Linux drivers don't make use of the link properties and may expose bugs if used. The link properties are still allowed for all ethernet controllers though, just not enforced. But I suppose it's better to optionally find the bug instead of causing a regression then finding the bug. Arınç
diff --git a/Documentation/devicetree/bindings/net/altr,tse.yaml b/Documentation/devicetree/bindings/net/altr,tse.yaml index f5d3b70af07a..24e0f1213109 100644 --- a/Documentation/devicetree/bindings/net/altr,tse.yaml +++ b/Documentation/devicetree/bindings/net/altr,tse.yaml @@ -67,6 +67,7 @@ required: allOf: - $ref: ethernet-controller.yaml# + - $ref: ethernet-controller.yaml#/$defs/phylink - if: properties: compatible: diff --git a/Documentation/devicetree/bindings/net/cdns,macb.yaml b/Documentation/devicetree/bindings/net/cdns,macb.yaml index bf8894a0257e..a455de04c5f1 100644 --- a/Documentation/devicetree/bindings/net/cdns,macb.yaml +++ b/Documentation/devicetree/bindings/net/cdns,macb.yaml @@ -156,6 +156,7 @@ required: allOf: - $ref: ethernet-controller.yaml# + - $ref: ethernet-controller.yaml#/$defs/phylink - if: not: diff --git a/Documentation/devicetree/bindings/net/dsa/arrow,xrs700x.yaml b/Documentation/devicetree/bindings/net/dsa/arrow,xrs700x.yaml index 9565a7402146..7829fc9e202d 100644 --- a/Documentation/devicetree/bindings/net/dsa/arrow,xrs700x.yaml +++ b/Documentation/devicetree/bindings/net/dsa/arrow,xrs700x.yaml @@ -29,6 +29,12 @@ properties: reg: maxItems: 1 +patternProperties: + "^(ethernet-)?ports$": + patternProperties: + "^(ethernet-)?port@[0-9]+$": + $ref: /schemas/net/ethernet-controller.yaml#/$defs/phylink + required: - compatible - reg diff --git a/Documentation/devicetree/bindings/net/dsa/brcm,b53.yaml b/Documentation/devicetree/bindings/net/dsa/brcm,b53.yaml index 0bb2ff0cf2d0..ed5b3eab1948 100644 --- a/Documentation/devicetree/bindings/net/dsa/brcm,b53.yaml +++ b/Documentation/devicetree/bindings/net/dsa/brcm,b53.yaml @@ -142,6 +142,15 @@ allOf: reg: maxItems: 1 + - if: + required: [ mdio ] + then: + patternProperties: + "^(ethernet-)?ports$": + patternProperties: + "^(ethernet-)?port@[0-9]+$": + $ref: /schemas/net/ethernet-controller.yaml#/$defs/phylink + unevaluatedProperties: false examples: diff --git a/Documentation/devicetree/bindings/net/dsa/brcm,sf2.yaml b/Documentation/devicetree/bindings/net/dsa/brcm,sf2.yaml index c745407f2f68..6cffcd35a943 100644 --- a/Documentation/devicetree/bindings/net/dsa/brcm,sf2.yaml +++ b/Documentation/devicetree/bindings/net/dsa/brcm,sf2.yaml @@ -81,7 +81,10 @@ properties: patternProperties: '^port@[0-9a-f]$': - $ref: dsa-port.yaml# + type: object + allOf: + - $ref: dsa-port.yaml# + - $ref: /schemas/net/ethernet-controller.yaml#/$defs/phylink unevaluatedProperties: false properties: @@ -161,6 +164,7 @@ examples: port@0 { label = "gphy"; reg = <0>; + phy-handle = <&phy8>; }; }; }; diff --git a/Documentation/devicetree/bindings/net/dsa/hirschmann,hellcreek.yaml b/Documentation/devicetree/bindings/net/dsa/hirschmann,hellcreek.yaml index 4021b054f684..30b4c7b1fd08 100644 --- a/Documentation/devicetree/bindings/net/dsa/hirschmann,hellcreek.yaml +++ b/Documentation/devicetree/bindings/net/dsa/hirschmann,hellcreek.yaml @@ -67,6 +67,12 @@ properties: additionalProperties: false +patternProperties: + "^(ethernet-)?ports$": + patternProperties: + "^(ethernet-)?port@[0-9]+$": + $ref: /schemas/net/ethernet-controller.yaml#/$defs/phylink + required: - compatible - reg diff --git a/Documentation/devicetree/bindings/net/dsa/mediatek,mt7530.yaml b/Documentation/devicetree/bindings/net/dsa/mediatek,mt7530.yaml index 31a7dbbf704d..a8e1134707e4 100644 --- a/Documentation/devicetree/bindings/net/dsa/mediatek,mt7530.yaml +++ b/Documentation/devicetree/bindings/net/dsa/mediatek,mt7530.yaml @@ -297,6 +297,15 @@ allOf: mediatek,mcm: false reset-names: false + - if: + required: [ mdio ] + then: + patternProperties: + "^(ethernet-)?ports$": + patternProperties: + "^(ethernet-)?port@[0-9]+$": + $ref: /schemas/net/ethernet-controller.yaml#/$defs/phylink + unevaluatedProperties: false examples: diff --git a/Documentation/devicetree/bindings/net/dsa/microchip,ksz.yaml b/Documentation/devicetree/bindings/net/dsa/microchip,ksz.yaml index 20e4174fe1ab..d8f12234eec6 100644 --- a/Documentation/devicetree/bindings/net/dsa/microchip,ksz.yaml +++ b/Documentation/devicetree/bindings/net/dsa/microchip,ksz.yaml @@ -60,6 +60,15 @@ required: - compatible - reg +if: + required: [ mdio ] +then: + patternProperties: + "^(ethernet-)?ports$": + patternProperties: + "^(ethernet-)?port@[0-9]+$": + $ref: /schemas/net/ethernet-controller.yaml#/$defs/phylink + unevaluatedProperties: false examples: diff --git a/Documentation/devicetree/bindings/net/dsa/microchip,lan937x.yaml b/Documentation/devicetree/bindings/net/dsa/microchip,lan937x.yaml index 33a4926b2d94..44a892b93eca 100644 --- a/Documentation/devicetree/bindings/net/dsa/microchip,lan937x.yaml +++ b/Documentation/devicetree/bindings/net/dsa/microchip,lan937x.yaml @@ -65,6 +65,15 @@ required: - compatible - reg +if: + required: [ mdio ] +then: + patternProperties: + "^(ethernet-)?ports$": + patternProperties: + "^(ethernet-)?port@[0-9]+$": + $ref: /schemas/net/ethernet-controller.yaml#/$defs/phylink + unevaluatedProperties: false examples: diff --git a/Documentation/devicetree/bindings/net/dsa/mscc,ocelot.yaml b/Documentation/devicetree/bindings/net/dsa/mscc,ocelot.yaml index fe02d05196e4..80cc9c49282b 100644 --- a/Documentation/devicetree/bindings/net/dsa/mscc,ocelot.yaml +++ b/Documentation/devicetree/bindings/net/dsa/mscc,ocelot.yaml @@ -73,6 +73,12 @@ properties: little-endian: true big-endian: true +patternProperties: + "^(ethernet-)?ports$": + patternProperties: + "^(ethernet-)?port@[0-9]+$": + $ref: /schemas/net/ethernet-controller.yaml#/$defs/phylink + required: - compatible - reg diff --git a/Documentation/devicetree/bindings/net/dsa/nxp,sja1105.yaml b/Documentation/devicetree/bindings/net/dsa/nxp,sja1105.yaml index 6838dc165d06..1d5c4a81caf6 100644 --- a/Documentation/devicetree/bindings/net/dsa/nxp,sja1105.yaml +++ b/Documentation/devicetree/bindings/net/dsa/nxp,sja1105.yaml @@ -79,6 +79,7 @@ patternProperties: "^(ethernet-)?ports$": patternProperties: "^(ethernet-)?port@[0-9]+$": + $ref: /schemas/net/ethernet-controller.yaml#/$defs/phylink allOf: - if: properties: diff --git a/Documentation/devicetree/bindings/net/dsa/qca8k.yaml b/Documentation/devicetree/bindings/net/dsa/qca8k.yaml index c472050582be..546939ab2053 100644 --- a/Documentation/devicetree/bindings/net/dsa/qca8k.yaml +++ b/Documentation/devicetree/bindings/net/dsa/qca8k.yaml @@ -114,6 +114,15 @@ required: - compatible - reg +if: + required: [ mdio ] +then: + patternProperties: + "^(ethernet-)?ports$": + patternProperties: + "^(ethernet-)?port@[0-6]$": + $ref: /schemas/net/ethernet-controller.yaml#/$defs/phylink + unevaluatedProperties: false examples: diff --git a/Documentation/devicetree/bindings/net/dsa/realtek.yaml b/Documentation/devicetree/bindings/net/dsa/realtek.yaml index 62ebaa4b5ae3..ec0428b74157 100644 --- a/Documentation/devicetree/bindings/net/dsa/realtek.yaml +++ b/Documentation/devicetree/bindings/net/dsa/realtek.yaml @@ -6,8 +6,7 @@ $schema: http://devicetree.org/meta-schemas/core.yaml# title: Realtek switches for unmanaged switches -allOf: - - $ref: dsa.yaml#/$defs/ethernet-ports +$ref: dsa.yaml#/$defs/ethernet-ports maintainers: - Linus Walleij <linus.walleij@linaro.org> @@ -107,33 +106,43 @@ properties: compatible: const: realtek,smi-mdio -if: - required: - - reg +allOf: + - if: + required: + - reg -then: - $ref: /schemas/spi/spi-peripheral-props.yaml# - properties: - mdc-gpios: false - mdio-gpios: false - mdio: + then: + $ref: /schemas/spi/spi-peripheral-props.yaml# properties: - compatible: false + mdc-gpios: false + mdio-gpios: false + mdio: + properties: + compatible: false -else: - properties: - mdio: - required: - - compatible + else: + properties: + mdio: + required: + - compatible - required: - - mdc-gpios - - mdio-gpios - - mdio - - reset-gpios + required: + - mdc-gpios + - mdio-gpios + - mdio + - reset-gpios -required: - - compatible + required: + - compatible + + - if: + required: [ mdio ] + then: + patternProperties: + "^(ethernet-)?ports$": + patternProperties: + "^(ethernet-)?port@[0-9]+$": + $ref: /schemas/net/ethernet-controller.yaml#/$defs/phylink unevaluatedProperties: false diff --git a/Documentation/devicetree/bindings/net/dsa/renesas,rzn1-a5psw.yaml b/Documentation/devicetree/bindings/net/dsa/renesas,rzn1-a5psw.yaml index 9ad9f5cdf688..7ec4371932ef 100644 --- a/Documentation/devicetree/bindings/net/dsa/renesas,rzn1-a5psw.yaml +++ b/Documentation/devicetree/bindings/net/dsa/renesas,rzn1-a5psw.yaml @@ -72,7 +72,7 @@ properties: patternProperties: "^(ethernet-)?port@[0-4]$": - type: object + $ref: /schemas/net/ethernet-controller.yaml#/$defs/phylink description: Ethernet switch ports properties: diff --git a/Documentation/devicetree/bindings/net/fsl,fman-dtsec.yaml b/Documentation/devicetree/bindings/net/fsl,fman-dtsec.yaml index c80c880a9dab..c31db5f7d548 100644 --- a/Documentation/devicetree/bindings/net/fsl,fman-dtsec.yaml +++ b/Documentation/devicetree/bindings/net/fsl,fman-dtsec.yaml @@ -136,6 +136,7 @@ dependencies: allOf: - $ref: ethernet-controller.yaml# + - $ref: ethernet-controller.yaml#/$defs/phylink - if: properties: compatible: diff --git a/Documentation/devicetree/bindings/net/fsl,qoriq-mc-dpmac.yaml b/Documentation/devicetree/bindings/net/fsl,qoriq-mc-dpmac.yaml index a1b71b35319e..b2cab0fa7b35 100644 --- a/Documentation/devicetree/bindings/net/fsl,qoriq-mc-dpmac.yaml +++ b/Documentation/devicetree/bindings/net/fsl,qoriq-mc-dpmac.yaml @@ -15,6 +15,7 @@ description: allOf: - $ref: ethernet-controller.yaml# + - $ref: ethernet-controller.yaml#/$defs/phylink properties: compatible: diff --git a/Documentation/devicetree/bindings/net/marvell,pp2.yaml b/Documentation/devicetree/bindings/net/marvell,pp2.yaml index 4eadafc43d4f..8e60cc4bbbc9 100644 --- a/Documentation/devicetree/bindings/net/marvell,pp2.yaml +++ b/Documentation/devicetree/bindings/net/marvell,pp2.yaml @@ -59,7 +59,9 @@ patternProperties: '^(ethernet-)?port@[0-2]$': type: object description: subnode for each ethernet port. - $ref: ethernet-controller.yaml# + allOf: + - $ref: ethernet-controller.yaml# + - $ref: ethernet-controller.yaml#/$defs/phylink unevaluatedProperties: false properties: diff --git a/Documentation/devicetree/bindings/net/mediatek,net.yaml b/Documentation/devicetree/bindings/net/mediatek,net.yaml index e74502a0afe8..7562bb64baa9 100644 --- a/Documentation/devicetree/bindings/net/mediatek,net.yaml +++ b/Documentation/devicetree/bindings/net/mediatek,net.yaml @@ -391,6 +391,7 @@ patternProperties: unevaluatedProperties: false allOf: - $ref: ethernet-controller.yaml# + - $ref: ethernet-controller.yaml#/$defs/phylink description: Ethernet MAC node properties: diff --git a/Documentation/devicetree/bindings/net/microchip,lan966x-switch.yaml b/Documentation/devicetree/bindings/net/microchip,lan966x-switch.yaml index 306ef9ecf2b9..a770cfc490a9 100644 --- a/Documentation/devicetree/bindings/net/microchip,lan966x-switch.yaml +++ b/Documentation/devicetree/bindings/net/microchip,lan966x-switch.yaml @@ -73,7 +73,9 @@ properties: "^port@[0-9a-f]+$": type: object - $ref: /schemas/net/ethernet-controller.yaml# + allOf: + - $ref: ethernet-controller.yaml# + - $ref: ethernet-controller.yaml#/$defs/phylink unevaluatedProperties: false properties: diff --git a/Documentation/devicetree/bindings/net/microchip,sparx5-switch.yaml b/Documentation/devicetree/bindings/net/microchip,sparx5-switch.yaml index fcafef8d5a33..da4b4d934705 100644 --- a/Documentation/devicetree/bindings/net/microchip,sparx5-switch.yaml +++ b/Documentation/devicetree/bindings/net/microchip,sparx5-switch.yaml @@ -84,7 +84,10 @@ properties: patternProperties: "^port@[0-9a-f]+$": - $ref: /schemas/net/ethernet-controller.yaml# + type: object + allOf: + - $ref: ethernet-controller.yaml# + - $ref: ethernet-controller.yaml#/$defs/phylink unevaluatedProperties: false properties: diff --git a/Documentation/devicetree/bindings/net/mscc,vsc7514-switch.yaml b/Documentation/devicetree/bindings/net/mscc,vsc7514-switch.yaml index 8ee2c7d7ff42..b3aff7b0790e 100644 --- a/Documentation/devicetree/bindings/net/mscc,vsc7514-switch.yaml +++ b/Documentation/devicetree/bindings/net/mscc,vsc7514-switch.yaml @@ -126,6 +126,11 @@ properties: - const: xtr - const: fdma + ethernet-ports: + patternProperties: + "^port@[0-9a-f]+$": + $ref: ethernet-controller.yaml#/$defs/phylink + required: - compatible - reg diff --git a/Documentation/devicetree/bindings/net/qca,ar71xx.yaml b/Documentation/devicetree/bindings/net/qca,ar71xx.yaml index 89f94b31b546..d021bfb4ad20 100644 --- a/Documentation/devicetree/bindings/net/qca,ar71xx.yaml +++ b/Documentation/devicetree/bindings/net/qca,ar71xx.yaml @@ -8,6 +8,7 @@ title: QCA AR71XX MAC allOf: - $ref: ethernet-controller.yaml# + - $ref: ethernet-controller.yaml#/$defs/phylink maintainers: - Oleksij Rempel <o.rempel@pengutronix.de> diff --git a/Documentation/devicetree/bindings/net/snps,dwmac.yaml b/Documentation/devicetree/bindings/net/snps,dwmac.yaml index ddf9522a5dc2..62d8c2cfafe9 100644 --- a/Documentation/devicetree/bindings/net/snps,dwmac.yaml +++ b/Documentation/devicetree/bindings/net/snps,dwmac.yaml @@ -567,6 +567,7 @@ dependencies: allOf: - $ref: ethernet-controller.yaml# + - $ref: ethernet-controller.yaml#/$defs/phylink - if: properties: compatible: diff --git a/Documentation/devicetree/bindings/net/ti,k3-am654-cpsw-nuss.yaml b/Documentation/devicetree/bindings/net/ti,k3-am654-cpsw-nuss.yaml index c9c25132d154..d4366a11918e 100644 --- a/Documentation/devicetree/bindings/net/ti,k3-am654-cpsw-nuss.yaml +++ b/Documentation/devicetree/bindings/net/ti,k3-am654-cpsw-nuss.yaml @@ -117,7 +117,9 @@ properties: type: object description: CPSWxG NUSS external ports - $ref: ethernet-controller.yaml# + allOf: + - $ref: ethernet-controller.yaml# + - $ref: ethernet-controller.yaml#/$defs/phylink unevaluatedProperties: false properties: diff --git a/Documentation/devicetree/bindings/net/xlnx,axi-ethernet.yaml b/Documentation/devicetree/bindings/net/xlnx,axi-ethernet.yaml index 1d33d80af11c..f8894546c02a 100644 --- a/Documentation/devicetree/bindings/net/xlnx,axi-ethernet.yaml +++ b/Documentation/devicetree/bindings/net/xlnx,axi-ethernet.yaml @@ -130,7 +130,8 @@ required: - phy-handle allOf: - - $ref: /schemas/net/ethernet-controller.yaml# + - $ref: ethernet-controller.yaml# + - $ref: ethernet-controller.yaml#/$defs/phylink additionalProperties: false
Phylink bindings are required for ethernet controllers that utilise phylink_fwnode_phy_connect() directly or through phylink_of_phy_connect(), and register OF-based only MDIO buses, if they register any. All the drivers that utilise phylink_fwnode_phy_connect() directly or through phylink_of_phy_connect(): - DSA - drivers/net/ethernet/mscc/ocelot_net.c - mscc,vsc7514-switch.yaml - drivers/net/ethernet/microchip/sparx5/sparx5_netdev.c - microchip,sparx5-switch.yaml - drivers/net/ethernet/altera/altera_tse_main.c - altr,tse.yaml - drivers/net/ethernet/xilinx/xilinx_axienet_main.c - xlnx,axi-ethernet.yaml - drivers/net/ethernet/mediatek/mtk_eth_soc.c - mediatek,net.yaml - drivers/net/ethernet/ti/am65-cpsw-nuss.c - ti,k3-am654-cpsw-nuss.yaml - drivers/net/ethernet/atheros/ag71xx.c - qca,ar71xx.yaml - drivers/net/ethernet/freescale/dpaa/dpaa_eth.c - fsl,fman-dtsec.yaml - drivers/net/ethernet/microchip/lan966x/lan966x_main.c - microchip,lan966x-switch.yaml - drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c - marvell,pp2.yaml - drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.c - fsl,qoriq-mc-dpmac.yaml - drivers/net/ethernet/cadence/macb_main.c - cdns,macb.yaml - Can register non-OF-based bus. - drivers/net/ethernet/stmicro/stmmac/stmmac_main.c - snps,dwmac.yaml - Can register non-OF-based bus. - drivers/net/ethernet/marvell/mvneta.c - marvell-armada-370-neta.txt - drivers/net/ethernet/freescale/enetc/enetc.c - fsl-enetc.txt RFC: The drivers marked with "can register non-OF-based bus" seem to search the MDIO bus to connect the PHY to the MAC using phylink_connect_phy() and/or phy_find_first() if phylink bindings don't exist. Should we enforce phylink bindings on their schemas regardless? DSA, like any other driver utilising the Linux MDIO infrastructure, can register a bus. On certain conditions, it registers the MDIO bus of the switch it controls non-OF-based. We can know when DSA won't create any non-OF-based buses. That leaves us with only OF-based buses in which case we can enforce phylink bindings for user ports. The bindings are already enforced for shared ports so we can enforce the bindings for all ports on the switch schemas which will achieve the same result with fewer lines. By looking at whether the mdio child node exists and what is explained on it, we can enforce phylink bindings. - mscc,vsc7514-switch.yaml - Enforce phylink bindings for all ports. - arrow,xrs700x.yaml - Enforce phylink bindings for all ports. - brcm,b53.yaml - Enforce phylink bindings for all ports if "mdio" is defined. - brcm,sf2.yaml - Enforce phylink bindings for all ports. - hirschmann,hellcreek.yaml - Enforce phylink bindings for all ports. - mediatek,mt7530.yaml - Enforce phylink bindings for all ports if "mdio" is defined. - microchip,ksz.yaml - Enforce phylink bindings for all ports if "mdio" is defined. - microchip,lan937x.yaml - Enforce phylink bindings for all ports if "mdio" is defined. - mscc,ocelot.yaml - Enforce phylink bindings for all ports. - nxp,sja1105.yaml - Enforce phylink bindings for all ports. - qca8k.yaml - Enforce phylink bindings for all ports if "mdio" is defined. - realtek.yaml - Enforce phylink bindings for all ports if "mdio" is defined. - renesas,rzn1-a5psw.yaml - Enforce phylink bindings for all ports. - ar9331.txt - Enforce phylink bindings for all ports. - lan9303.txt - Enforce phylink bindings for all ports if "mdio" is defined. - lantiq-gswip.txt - Enforce phylink bindings for all ports. - marvell.txt - Enforce phylink bindings for all ports if "mdio" is defined. - vitesse,vsc73xx.txt - Enforce phylink bindings for all ports if "mdio" is defined. I will convert the non json-schema documents accordingly. Signed-off-by: Arınç ÜNAL <arinc.unal@arinc9.com> --- .../devicetree/bindings/net/altr,tse.yaml | 1 + .../devicetree/bindings/net/cdns,macb.yaml | 1 + .../bindings/net/dsa/arrow,xrs700x.yaml | 6 ++ .../devicetree/bindings/net/dsa/brcm,b53.yaml | 9 +++ .../devicetree/bindings/net/dsa/brcm,sf2.yaml | 6 +- .../net/dsa/hirschmann,hellcreek.yaml | 6 ++ .../bindings/net/dsa/mediatek,mt7530.yaml | 9 +++ .../bindings/net/dsa/microchip,ksz.yaml | 9 +++ .../bindings/net/dsa/microchip,lan937x.yaml | 9 +++ .../bindings/net/dsa/mscc,ocelot.yaml | 6 ++ .../bindings/net/dsa/nxp,sja1105.yaml | 1 + .../devicetree/bindings/net/dsa/qca8k.yaml | 9 +++ .../devicetree/bindings/net/dsa/realtek.yaml | 57 +++++++++++-------- .../bindings/net/dsa/renesas,rzn1-a5psw.yaml | 2 +- .../bindings/net/fsl,fman-dtsec.yaml | 1 + .../bindings/net/fsl,qoriq-mc-dpmac.yaml | 1 + .../devicetree/bindings/net/marvell,pp2.yaml | 4 +- .../devicetree/bindings/net/mediatek,net.yaml | 1 + .../net/microchip,lan966x-switch.yaml | 4 +- .../bindings/net/microchip,sparx5-switch.yaml | 5 +- .../bindings/net/mscc,vsc7514-switch.yaml | 5 ++ .../devicetree/bindings/net/qca,ar71xx.yaml | 1 + .../devicetree/bindings/net/snps,dwmac.yaml | 1 + .../bindings/net/ti,k3-am654-cpsw-nuss.yaml | 4 +- .../bindings/net/xlnx,axi-ethernet.yaml | 3 +- 25 files changed, 130 insertions(+), 31 deletions(-)