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

Florian Fainelli f.fainelli at gmail.com
Fri Jan 3 10:27:25 PST 2020


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 at gmail.com>

Reviewed-by: Florian Fainelli <f.fainelli at gmail.com>
-- 
Florian



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