[net-next,1/8] dt-bindings: net: mediatek,net: add mt7988-eth binding

  Introduce DT bindings for the MT7988 SoC to mediatek,net.yaml.
The MT7988 SoC got 3 Ethernet MACs operating at a maximum of
10 Gigabit/sec supported by 2 packet processor engines for
offloading tasks.
The first MAC is hard-wired to a built-in switch which exposes
four 1000Base-T PHYs as user ports.
It also comes with built-in 2500Base-T PHY which can be used
with the 2nd GMAC.
The 2nd and 3rd GMAC can be connected to external PHYs or provide
SFP(+) cages attached via SGMII, 1000Base-X, 2500Base-X, USXGMII,
5GBase-KR or 10GBase-KR.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
---
 .../devicetree/bindings/net/mediatek,net.yaml | 111 ++++++++++++++++++
 1 file changed, 111 insertions(+)


base-commit: e431e712c83676a8a9cd3988b323e3ef994a8ff3
  

On Sun, Jun 11, 2023 at 01:32:27AM +0100, Daniel Golle wrote:
> Introduce DT bindings for the MT7988 SoC to mediatek,net.yaml.
> The MT7988 SoC got 3 Ethernet MACs operating at a maximum of
> 10 Gigabit/sec supported by 2 packet processor engines for
> offloading tasks.
> The first MAC is hard-wired to a built-in switch which exposes
> four 1000Base-T PHYs as user ports.
> It also comes with built-in 2500Base-T PHY which can be used
> with the 2nd GMAC.
> The 2nd and 3rd GMAC can be connected to external PHYs or provide
> SFP(+) cages attached via SGMII, 1000Base-X, 2500Base-X, USXGMII,
> 5GBase-KR or 10GBase-KR.

Are you _sure_ that they are GBASE-KR, and not just GBASE-R ? Are they
designed for backplane links, and thus have some form of negotiation?
If they have no negotiation, they may not be GBASE-KR.

Thanks.
  

On 11/06/2023 02:32, Daniel Golle wrote:
> Introduce DT bindings for the MT7988 SoC to mediatek,net.yaml.
> The MT7988 SoC got 3 Ethernet MACs operating at a maximum of
> 10 Gigabit/sec supported by 2 packet processor engines for
> offloading tasks.
> The first MAC is hard-wired to a built-in switch which exposes
> four 1000Base-T PHYs as user ports.
> It also comes with built-in 2500Base-T PHY which can be used
> with the 2nd GMAC.
> The 2nd and 3rd GMAC can be connected to external PHYs or provide
> SFP(+) cages attached via SGMII, 1000Base-X, 2500Base-X, USXGMII,
> 5GBase-KR or 10GBase-KR.
> 
> Signed-off-by: Daniel Golle <daniel@makrotopia.org>
> ---
>  .../devicetree/bindings/net/mediatek,net.yaml | 111 ++++++++++++++++++
>  1 file changed, 111 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/net/mediatek,net.yaml b/Documentation/devicetree/bindings/net/mediatek,net.yaml
> index acb2b2ac4fe1e..f08151a60084b 100644
> --- a/Documentation/devicetree/bindings/net/mediatek,net.yaml
> +++ b/Documentation/devicetree/bindings/net/mediatek,net.yaml
> @@ -23,6 +23,7 @@ properties:
>        - mediatek,mt7629-eth
>        - mediatek,mt7981-eth
>        - mediatek,mt7986-eth
> +      - mediatek,mt7988-eth
>        - ralink,rt5350-eth
>  
>    reg:
> @@ -70,6 +71,22 @@ properties:
>        A list of phandle to the syscon node that handles the SGMII setup which is required for
>        those SoCs equipped with SGMII.
>  
> +  mediatek,toprgu:
> +    $ref: /schemas/types.yaml#/definitions/phandle
> +    description:
> +      Phandle to the mediatek toprgu controller used to provide various clocks
> +      and reset to the system.
> +
> +  mediatek,usxgmiisys:
> +    $ref: /schemas/types.yaml#/definitions/phandle-array
> +    minItems: 2
> +    maxItems: 2
> +    items:
> +      maxItems: 1
> +    description:
> +      A list of phandle to the syscon node that handles the USXGMII setup which is required for
> +      those SoCs equipped with USXGMII.

Why do you need two phandles for the same node?

> +
>    mediatek,wed:
>      $ref: /schemas/types.yaml#/definitions/phandle-array
>      minItems: 2
> @@ -84,6 +101,21 @@ properties:
>      description:
>        Phandle to the mediatek wed-pcie controller.
>  
> +  mediatek,xfi_pextp:

Underscores are not allowed in property names.

> +    $ref: /schemas/types.yaml#/definitions/phandle-array
> +    minItems: 2
> +    maxItems: 2
> +    items:
> +      maxItems: 1
> +    description:
> +      A list of phandle to the syscon node that handles the XFI setup which is required for
> +      those SoCs equipped with XFI.
> +
> +  mediatek,xfi_pll:
> +    $ref: /schemas/types.yaml#/definitions/phandle
> +    description:
> +      Phandle to the XFI PLL unit.

This looks like a clock.

> +
>    dma-coherent: true
>  
>    mdio-bus:
> @@ -290,6 +322,85 @@ allOf:
>            minItems: 2
>            maxItems: 2
>  
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            const: mediatek,mt7988-eth
> +    then:
> +      properties:
> +        interrupts:
> +          minItems: 4
> +
> +        clocks:
> +          minItems: 34
> +          maxItems: 34
> +
> +        clock-names:
> +          items:
> +            - const: crypto
> +            - const: fe
> +            - const: gp2
> +            - const: gp1
> +            - const: gp3
> +            - const: ethwarp_wocpu2
> +            - const: ethwarp_wocpu1
> +            - const: ethwarp_wocpu0
> +            - const: esw
> +            - const: netsys0
> +            - const: netsys1
> +            - const: sgmii_tx250m
> +            - const: sgmii_rx250m
> +            - const: sgmii2_tx250m
> +            - const: sgmii2_rx250m
> +            - const: top_usxgmii0_sel
> +            - const: top_usxgmii1_sel
> +            - const: top_sgm0_sel
> +            - const: top_sgm1_sel
> +            - const: top_xfi_phy0_xtal_sel
> +            - const: top_xfi_phy1_xtal_sel
> +            - const: top_eth_gmii_sel
> +            - const: top_eth_refck_50m_sel
> +            - const: top_eth_sys_200m_sel
> +            - const: top_eth_sys_sel
> +            - const: top_eth_xgmii_sel
> +            - const: top_eth_mii_sel
> +            - const: top_netsys_sel
> +            - const: top_netsys_500m_sel
> +            - const: top_netsys_pao_2x_sel
> +            - const: top_netsys_sync_250m_sel
> +            - const: top_netsys_ppefb_250m_sel
> +            - const: top_netsys_warp_sel
> +            - const: wocpu1
> +            - const: wocpu0
> +            - const: xgp1
> +            - const: xgp2
> +            - const: xgp3
> +
> +        mediatek,sgmiisys:
> +          minItems: 2
> +          maxItems: 2
> +
> +        mediatek,usxgmiisys:
> +          minItems: 2
> +          maxItems: 2

Why do you need this here?

> +
> +        mediatek,xfi_pextp:
> +          minItems: 2
> +          maxItems: 2
> +
> +        mediatek,xfi_pll:
> +          minItems: 1
> +          maxItems: 1
> +
> +        mediatek,infracfg:
> +          minItems: 1
> +          maxItems: 1
> +
> +        mediatek,toprgu:
> +          minItems: 1
> +          maxItems: 1

All this looks redundant.



Best regards,
Krzysztof