[PATCH 1/2] net: mdiobus: reset deassert delay

[Bruno Thomsen]

The current reset logic only has a delay during assert.
This reuses the delay value as deassert delay to ensure
PHYs are ready for commands. Delays are typically needed
when external hardware slows down reset release with a
RC network. This solution does not need any new device
tree bindings.
It also improves handling of long delays (>20ms) by using
the generic fsleep() for selecting appropriate delay
function.

Signed-off-by: Bruno Thomsen <bruno.thom...@gmail.com>
---
 drivers/net/phy/mdio_bus.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/phy/mdio_bus.c b/drivers/net/phy/mdio_bus.c
index 6ceee82b2839..84d5ab07fe16 100644
--- a/drivers/net/phy/mdio_bus.c
+++ b/drivers/net/phy/mdio_bus.c
@@ -627,8 +627,9 @@ int __mdiobus_register(struct mii_bus *bus, struct module 
*owner)
                bus->reset_gpiod = gpiod;
 
                gpiod_set_value_cansleep(gpiod, 1);
-               udelay(bus->reset_delay_us);
+               fsleep(bus->reset_delay_us);
                gpiod_set_value_cansleep(gpiod, 0);
+               fsleep(bus->reset_delay_us);
        }
 
        if (bus->reset) {

base-commit: 92ed301919932f777713b9172e525674157e983d
-- 
2.26.2