linux-kernel - Re: [PATCH v3 11/15] phy: tegra: xusb: Tegra210 host mode VBUS control

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Message-ID: <20200928134244.GL3065790@ulmo>
Date:   Mon, 28 Sep 2020 15:42:44 +0200
From:   Thierry Reding <thierry.reding@...il.com>
To:     JC Kuo <jckuo@...dia.com>
Cc:     gregkh@...uxfoundation.org, robh@...nel.org, jonathanh@...dia.com,
        kishon@...com, linux-tegra@...r.kernel.org,
        linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, nkristam@...dia.com
Subject: Re: [PATCH v3 11/15] phy: tegra: xusb: Tegra210 host mode VBUS
 control

On Wed, Sep 09, 2020 at 04:10:37PM +0800, JC Kuo wrote:
> To support XUSB host controller ELPG, this commit moves VBUS control
> .phy_power_on()/.phy_power_off() to .phy_init()/.phy_exit().
> When XUSB host controller enters ELPG, host driver invokes
> .phy_power_off(), VBUS should remain ON so that USB devices will not
> disconnect. VBUS can be turned OFF when host driver invokes
> .phy_exit() which indicates disabling a USB port.
> 
> Signed-off-by: JC Kuo <jckuo@...dia.com>
> ---
> v3:
>    new, was a part of "phy: tegra: xusb: Add wake/sleepwalk for Tegra210"
> 
>  drivers/phy/tegra/xusb-tegra210.c | 52 ++++++++++++++++++++++++-------
>  1 file changed, 40 insertions(+), 12 deletions(-)

Acked-by: Thierry Reding <treding@...dia.com>

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