Re: [PATCH 1/6] dt-bindings: usb: dwc3: add property to disable xhci 64bit support

[Peter Chen <peter.chen@nxp.com>]

On 20-06-09 19:12:40, Li Jun wrote:
> Add a property "snps,xhci-dis-64bit-support-quirk" to disable xhci 64bit
> address support, this is due to SoC integration can't support it but
> the AC64 bit (bit 0) of HCCPARAMS1 is set to be 1.
> 
> Signed-off-by: Li Jun <jun.li@nxp.com>
> ---
>  Documentation/devicetree/bindings/usb/dwc3.txt | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/usb/dwc3.txt b/Documentation/devicetree/bindings/usb/dwc3.txt
> index d03edf9..d16cba7 100644
> --- a/Documentation/devicetree/bindings/usb/dwc3.txt
> +++ b/Documentation/devicetree/bindings/usb/dwc3.txt
> @@ -109,6 +109,9 @@ Optional properties:
>  			When just one value, which means INCRX burst mode enabled. When
>  			more than one value, which means undefined length INCR burst type
>  			enabled. The values can be 1, 4, 8, 16, 32, 64, 128 and 256.
> + - snps,xhci-dis-64bit-support-quirk: set if the AC64 bit (bit 0) of HCCPARAMS1 is set
> +			to be 1, but the controller actually can't handle 64-bit address
> +			due to SoC integration.
>  
>   - in addition all properties from usb-xhci.txt from the current directory are
>     supported as well

Why not adding it at usb-xhci.txt directly? It is more like general
property, I see Renesas rcar platforms also have this quirk.

-- 

Thanks,
Peter Chen