Re: [PATCH v4 10/13] phy: usb: PHY's MDIO registers not accessible without device installed
From: Florian Fainelli <f.fainelli@gmail.com>
Date: 2020-01-03 18:27:29
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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@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> -- Florian _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel