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Age	Commit message (Collapse)	Author	Files	Lines
2017-04-26	dt-bindings: mdio: Clarify binding document	Florian Fainelli	1	-4/+8
	The described GPIO reset property is applicable to all child PHYs. If we have one reset line per PHY present on the MDIO bus, these automatically become properties of the child PHY nodes. Finally, indicate how the RESET pulse width must be defined, which is the maximum value of all individual PHYs RESET pulse widths determined by reading their datasheets. Fixes: 69226896ad63 ("mdio_bus: Issue GPIO RESET to PHYs.") Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Reviewed-by: Roger Quadros <rogerq@ti.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-24	mdio_bus: Issue GPIO RESET to PHYs.	Roger Quadros	1	-0/+33
	Some boards [1] leave the PHYs at an invalid state during system power-up or reset thus causing unreliability issues with the PHY which manifests as PHY not being detected or link not functional. To fix this, these PHYs need to be RESET via a GPIO connected to the PHY's RESET pin. Some boards have a single GPIO controlling the PHY RESET pin of all PHYs on the bus whereas some others have separate GPIOs controlling individual PHY RESETs. In both cases, the RESET de-assertion cannot be done in the PHY driver as the PHY will not probe till its reset is de-asserted. So do the RESET de-assertion in the MDIO bus driver. [1] - am572x-idk, am571x-idk, a437x-idk Signed-off-by: Roger Quadros <rogerq@ti.com> Signed-off-by: David S. Miller <davem@davemloft.net>