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Date:   Tue, 12 Apr 2022 07:14:47 +0200
From:   Greg KH <gregkh@linuxfoundation.org>
To:     Surong Pang <surong.pang@gmail.com>
Cc:     mathias.nyman@intel.com, linux-usb@vger.kernel.org,
        linux-kernel@vger.kernel.org
Subject: Re: [PATCH V1 1/1] usb/host: To get "usb3-slow-suspend" property,
 then to set xhci quirks
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References: <20220412025952.21062-1-surong.pang@gmail.com>
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On Tue, Apr 12, 2022 at 10:59:52AM +0800, Surong Pang wrote:
> From: Surong Pang <surong.pang@unisoc.com>
> 
> To set xhci->quirks value according to "usb3-slow-suspend" property
> 
> Signed-off-by: Surong Pang <surong.pang@unisoc.com>
> ---
>  drivers/usb/host/xhci-plat.c | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c
> index 649ffd861b44..6bc456bc6468 100644
> --- a/drivers/usb/host/xhci-plat.c
> +++ b/drivers/usb/host/xhci-plat.c
> @@ -302,6 +302,9 @@ static int xhci_plat_probe(struct platform_device *pdev)
>  		if (device_property_read_bool(tmpdev, "usb3-lpm-capable"))
>  			xhci->quirks |= XHCI_LPM_SUPPORT;
>  
> +		if (device_property_read_bool(tmpdev, "usb3-slow-suspend"))
> +			xhci->quirks |= XHCI_SLOW_SUSPEND;

Where is that property documented?