From bb3831294cd50750806f2ce8d73317dc8feeda09 Mon Sep 17 00:00:00 2001 From: Bruno Thomsen Date: Thu, 30 Jul 2020 21:57:48 +0200 Subject: net: mdiobus: add reset-post-delay-us handling Load new "reset-post-delay-us" value from MDIO properties, and if configured to a greater then zero delay do a flexible sleeping delay after MDIO bus reset deassert. This allows devices to exit reset state before start bus communication. Signed-off-by: Bruno Thomsen Reviewed-by: Andrew Lunn Reviewed-by: Florian Fainelli Signed-off-by: David S. Miller --- drivers/net/phy/mdio_bus.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'drivers/net/phy') diff --git a/drivers/net/phy/mdio_bus.c b/drivers/net/phy/mdio_bus.c index 5df3782b05b4..0af20faad69d 100644 --- a/drivers/net/phy/mdio_bus.c +++ b/drivers/net/phy/mdio_bus.c @@ -556,6 +556,8 @@ int __mdiobus_register(struct mii_bus *bus, struct module *owner) gpiod_set_value_cansleep(gpiod, 1); fsleep(bus->reset_delay_us); gpiod_set_value_cansleep(gpiod, 0); + if (bus->reset_post_delay_us > 0) + fsleep(bus->reset_post_delay_us); } if (bus->reset) { -- cgit v1.2.3