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Message-ID: <20230722-coleslaw-breeder-40827e23f717@spud>
Date:   Sat, 22 Jul 2023 12:42:09 +0100
From:   Conor Dooley <conor@...nel.org>
To:     Sebastian Reichel <sebastian.reichel@...labora.com>
Cc:     Heiko Stuebner <heiko@...ech.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Thinh Nguyen <Thinh.Nguyen@...opsys.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        linux-rockchip@...ts.infradead.org, linux-usb@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, kernel@...labora.com
Subject: Re: [PATCH v2 1/3] dt-bindings: usb: add rk3588 compatible to
 rockchip,dwc3

On Thu, Jul 20, 2023 at 07:36:41PM +0200, Sebastian Reichel wrote:
> RK3588 has three DWC3 controllers. Two of them are fully functional in
> host, device and OTG mode including USB2 support. They are connected to
> dedicated PHYs, that also support USB-C's DisplayPort alternate mode.
> 
> The third controller is connected to one of the combphy's shared
> with PCIe and SATA. It can only be used in host mode and does not
> support USB2. Compared to the other controllers this one needs
> some extra clocks.
> 
> Signed-off-by: Sebastian Reichel <sebastian.reichel@...labora.com>

I feel like I say it a bunch for some of these Rockchip bindings
patches, but if you're adding more clocks for some SoCs, should some
per-SoC constraints not also be added?

> ---
>  .../devicetree/bindings/usb/rockchip,dwc3.yaml        | 11 +++++++++--
>  1 file changed, 9 insertions(+), 2 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/usb/rockchip,dwc3.yaml b/Documentation/devicetree/bindings/usb/rockchip,dwc3.yaml
> index 291844c8f3e1..cbc3e55e05e1 100644
> --- a/Documentation/devicetree/bindings/usb/rockchip,dwc3.yaml
> +++ b/Documentation/devicetree/bindings/usb/rockchip,dwc3.yaml
> @@ -30,6 +30,7 @@ select:
>          enum:
>            - rockchip,rk3328-dwc3
>            - rockchip,rk3568-dwc3
> +          - rockchip,rk3588-dwc3
>    required:
>      - compatible
>  
> @@ -39,6 +40,7 @@ properties:
>        - enum:
>            - rockchip,rk3328-dwc3
>            - rockchip,rk3568-dwc3
> +          - rockchip,rk3588-dwc3
>        - const: snps,dwc3
>  
>    reg:
> @@ -58,7 +60,9 @@ properties:
>            Master/Core clock, must to be >= 62.5 MHz for SS
>            operation and >= 30MHz for HS operation
>        - description:
> -          Controller grf clock
> +          Controller grf clock OR UTMI clock
> +      - description:
> +          PIPE clock
>  
>    clock-names:
>      minItems: 3
> @@ -66,7 +70,10 @@ properties:
>        - const: ref_clk
>        - const: suspend_clk
>        - const: bus_clk
> -      - const: grf_clk
> +      - enum:
> +          - grf_clk
> +          - utmi
> +      - const: pipe
>  
>    power-domains:
>      maxItems: 1
> -- 
> 2.40.1
> 

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