Re: [PATCH] dt-bindings: usb: ti,usb8041: Fold in TI USB8020B

[Alexander Stein <alexander.stein@ew.tq-group.com>]

Am Dienstag, 3. November 2026, 10:53:29 Mitteleuropäische Normalzeit schrieb Chen-Yu Tsai:
> TI USB8020B is another USB 3.0 hub that currently has a separate yet
> similar, albeit more limited binding.
> 
> Fold the TI USB8020B compatibles into the TI USB8041 binding, thus
> allowing the TI USB8020B to correctly allow downstream ports through
> the common USB hub binding.
> 
> The requirement of "peer-hub" is relaxed, as done in commit e44297dd2b75
> ("dt-bindings: usb: ti,usb8041: Support nested USB hubs"). The hub chip
> might only have its HighSpeed data lines connected, and thus would not
> have a SuperSpeed peer hub.
> 
> Signed-off-by: Chen-Yu Tsai <wenst@chromium.org>

Looks good to me:
Acked-by: Alexander Stein <alexander.stein@ew.tq-group.com>

> ---
> Cc: Macpaul Lin <macpaul.lin@mediatek.com>
> ---
>  .../devicetree/bindings/usb/ti,usb8020b.yaml  | 69 -------------------
>  .../devicetree/bindings/usb/ti,usb8041.yaml   |  5 +-
>  2 files changed, 4 insertions(+), 70 deletions(-)
>  delete mode 100644 Documentation/devicetree/bindings/usb/ti,usb8020b.yaml
> 
> diff --git a/Documentation/devicetree/bindings/usb/ti,usb8020b.yaml b/Documentation/devicetree/bindings/usb/ti,usb8020b.yaml
> deleted file mode 100644
> index 61217da8b2f3..000000000000
> --- a/Documentation/devicetree/bindings/usb/ti,usb8020b.yaml
> +++ /dev/null
> @@ -1,69 +0,0 @@
> -# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
> -%YAML 1.2
> ----
> -$id: http://devicetree.org/schemas/usb/ti,usb8020b.yaml#
> -$schema: http://devicetree.org/meta-schemas/core.yaml#
> -
> -title: TI USB8020B USB 3.0 hub controller
> -
> -maintainers:
> -  - Macpaul Lin <macpaul.lin@mediatek.com>
> -
> -allOf:
> -  - $ref: usb-device.yaml#
> -
> -properties:
> -  compatible:
> -    enum:
> -      - usb451,8025
> -      - usb451,8027
> -
> -  reg: true
> -
> -  reset-gpios:
> -    items:
> -      - description: GPIO specifier for GRST# pin.
> -
> -  vdd-supply:
> -    description:
> -      VDD power supply to the hub
> -
> -  peer-hub:
> -    $ref: /schemas/types.yaml#/definitions/phandle
> -    description:
> -      phandle to the peer hub on the controller.
> -
> -required:
> -  - compatible
> -  - reg
> -  - peer-hub
> -
> -additionalProperties: false
> -
> -examples:
> -  - |
> -    #include <dt-bindings/gpio/gpio.h>
> -
> -    usb {
> -        dr_mode = "host";
> -        #address-cells = <1>;
> -        #size-cells = <0>;
> -
> -        /* 2.0 hub on port 1 */
> -        hub_2_0: hub@1 {
> -            compatible = "usb451,8027";
> -            reg = <1>;
> -            peer-hub = <&hub_3_0>;
> -            reset-gpios = <&pio 7 GPIO_ACTIVE_HIGH>;
> -            vdd-supply = <&usb_hub_fixed_3v3>;
> -        };
> -
> -        /* 3.0 hub on port 2 */
> -        hub_3_0: hub@2 {
> -            compatible = "usb451,8025";
> -            reg = <2>;
> -            peer-hub = <&hub_2_0>;
> -            reset-gpios = <&pio 7 GPIO_ACTIVE_HIGH>;
> -            vdd-supply = <&usb_hub_fixed_3v3>;
> -        };
> -    };
> diff --git a/Documentation/devicetree/bindings/usb/ti,usb8041.yaml b/Documentation/devicetree/bindings/usb/ti,usb8041.yaml
> index 07e13fae640b..74021d13a43a 100644
> --- a/Documentation/devicetree/bindings/usb/ti,usb8041.yaml
> +++ b/Documentation/devicetree/bindings/usb/ti,usb8041.yaml
> @@ -4,10 +4,11 @@
>  $id: http://devicetree.org/schemas/usb/ti,usb8041.yaml#
>  $schema: http://devicetree.org/meta-schemas/core.yaml#
>  
> -title: TI USB8041 and USB8044 USB 3.0 hub controllers
> +title: TI USB80xx USB 3.0 hub controllers
>  
>  maintainers:
>    - Alexander Stein <alexander.stein@ew.tq-group.com>
> +  - Macpaul Lin <macpaul.lin@mediatek.com>
>  
>  allOf:
>    - $ref: usb-device.yaml#
> @@ -16,6 +17,8 @@ allOf:
>  properties:
>    compatible:
>      enum:
> +      - usb451,8025
> +      - usb451,8027
>        - usb451,8140
>        - usb451,8142
>        - usb451,8440
> 


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