Re: [PATCH v4 10/13] phy: usb: PHY's MDIO registers not accessible without device installed

From: Florian Fainelli
Date: Fri Jan 03 2020 - 13:27:29 EST

On 1/3/20 10:18 AM, Al Cooper wrote:
> When there is no device connected and FSM is enabled, the XHCI puts
> the PHY into suspend mode. When the PHY is put into suspend mode
> the USB LDO powers down the PHY. This causes the MDIO to be
> inaccessible and its registers reset to default. The fix is to
> disable FSM.
> Signed-off-by: Al Cooper <alcooperx@xxxxxxxxx>

Reviewed-by: Florian Fainelli <f.fainelli@xxxxxxxxx>