On Thu, Feb 20, 2014 at 05:14:39AM +0000, Peter Chen wrote:
> When we need the PHY can be waken up by external signals,
> we can call this API. Besides, we call mxs_phy_disconnect_line
> at this API to close the connection between USB PHY and
> controller, after that, the line state from controller is SE0.
> Once the PHY is out of power, without calling mxs_phy_disconnect_line,
> there are unknown wakeups due to dp/dm floating at device mode.
>
> Signed-off-by: Peter Chen <peter.chen@xxxxxxxxxxxxx>
> ---
> drivers/usb/phy/phy-mxs-usb.c | 116 +++++++++++++++++++++++++++++++++++++++++
> 1 files changed, 116 insertions(+), 0 deletions(-)
[...]
> +static void mxs_phy_disconnect_line(struct mxs_phy *mxs_phy, bool on)
> +{
> + bool vbus_is_on = false;
> +
> + /* If the SoCs don't need to disconnect line without vbus, quit */
> + if (!(mxs_phy->data->flags & MXS_PHY_DISCONNECT_LINE_WITHOUT_VBUS))
> + return;
> +
> + /* If the SoCs don't have anatop, quit */
> + if (!mxs_phy->regmap_anatop)
> + return;
So it looks like fsl,anatop is truly optional.
Thanks,
Mark.
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