linux-kernel - Re: [PATCH 4/4] ARM: dts: rockchip: Add quirk for resetting rk3288's dwc2 host on wakeup

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Message-ID: <20190412235738.GZ112750@google.com>
Date:   Fri, 12 Apr 2019 16:57:38 -0700
From:   Matthias Kaehlcke <mka@...omium.org>
To:     Douglas Anderson <dianders@...omium.org>
Cc:     Rob Herring <robh+dt@...nel.org>,
        Minas Harutyunyan <hminas@...opsys.com>,
        Heiko Stuebner <heiko@...ech.de>,
        Felipe Balbi <felipe.balbi@...ux.intel.com>,
        amstan@...omium.org, linux-rockchip@...ts.infradead.org,
        linux-usb@...r.kernel.org, Randy Li <ayaka@...lik.info>,
        ryandcase@...omium.org, jwerner@...omium.org,
        Elaine Zhang <zhangqing@...k-chips.com>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Mark Rutland <mark.rutland@....com>,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 4/4] ARM: dts: rockchip: Add quirk for resetting rk3288's
 dwc2 host on wakeup

On Fri, Apr 12, 2019 at 03:41:49PM -0700, Douglas Anderson wrote:
> The "host" USB port on rk3288 has a hardware errata where we've got to
> assert a PHY reset whenever we see a remote wakeup.  Add that quirk
> property to the device tree.
> 
> Signed-off-by: Douglas Anderson <dianders@...omium.org>
> ---
> 
>  arch/arm/boot/dts/rk3288.dtsi | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/arch/arm/boot/dts/rk3288.dtsi b/arch/arm/boot/dts/rk3288.dtsi
> index 92e0600595f8..6367c1b50fd7 100644
> --- a/arch/arm/boot/dts/rk3288.dtsi
> +++ b/arch/arm/boot/dts/rk3288.dtsi
> @@ -617,6 +617,7 @@
>  		dr_mode = "host";
>  		phys = <&usbphy2>;
>  		phy-names = "usb2-phy";
> +		snps,reset-phy-on-wake;
>  		status = "disabled";
>  	};
>  

Reviewed-by: Matthias Kaehlcke <mka@...omium.org>