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authorBruno Thomsen <bruno.thomsen@gmail.com>2020-07-30 21:57:48 +0200
committerDavid S. Miller <davem@davemloft.net>2020-08-04 00:01:02 +0200
commitbb3831294cd50750806f2ce8d73317dc8feeda09 (patch)
treeb1954b61b77d4b8ed1a001a58609941317e9f712 /drivers/of
parentnet: mdiobus: use flexible sleeping for reset-delay-us (diff)
downloadlinux-bb3831294cd50750806f2ce8d73317dc8feeda09.tar.xz
linux-bb3831294cd50750806f2ce8d73317dc8feeda09.zip
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 <bruno.thomsen@gmail.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/of')
-rw-r--r--drivers/of/of_mdio.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/of/of_mdio.c b/drivers/of/of_mdio.c
index eb84507de28a..cb32d7ef4938 100644
--- a/drivers/of/of_mdio.c
+++ b/drivers/of/of_mdio.c
@@ -268,6 +268,8 @@ int of_mdiobus_register(struct mii_bus *mdio, struct device_node *np)
/* Get bus level PHY reset GPIO details */
mdio->reset_delay_us = DEFAULT_GPIO_RESET_DELAY;
of_property_read_u32(np, "reset-delay-us", &mdio->reset_delay_us);
+ mdio->reset_post_delay_us = 0;
+ of_property_read_u32(np, "reset-post-delay-us", &mdio->reset_post_delay_us);
/* Register the MDIO bus */
rc = mdiobus_register(mdio);