From 3a30ae6ef3cba29c83ca791bde0d06f182d5678d Mon Sep 17 00:00:00 2001 From: Richard Leitner Date: Mon, 11 Dec 2017 13:16:57 +0100 Subject: phylib: Add device reset delay support Some PHYs need a minimum time after the reset gpio was asserted and/or deasserted. To ensure we meet these timing requirements add two new optional devicetree parameters for the phy: reset-delay-us and reset-post-delay-us. Signed-off-by: Richard Leitner Reviewed-by: Geert Uytterhoeven Reviewed-by: Andrew Lunn Signed-off-by: David S. Miller --- drivers/of/of_mdio.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'drivers/of/of_mdio.c') diff --git a/drivers/of/of_mdio.c b/drivers/of/of_mdio.c index 98258583abb0..7c8767176315 100644 --- a/drivers/of/of_mdio.c +++ b/drivers/of/of_mdio.c @@ -77,6 +77,10 @@ static int of_mdiobus_register_phy(struct mii_bus *mdio, if (of_property_read_bool(child, "broken-turn-around")) mdio->phy_ignore_ta_mask |= 1 << addr; + of_property_read_u32(child, "reset-delay-us", &phy->mdio.reset_delay); + of_property_read_u32(child, "reset-post-delay-us", + &phy->mdio.reset_post_delay); + /* Associate the OF node with the device structure so it * can be looked up later */ of_node_get(child); -- cgit v1.2.3