summaryrefslogtreecommitdiffstats
path: root/drivers/net/phy/micrel.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/net/phy/micrel.c')
-rw-r--r--drivers/net/phy/micrel.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/net/phy/micrel.c b/drivers/net/phy/micrel.c
index 2ec19e5540bf..05d20343b816 100644
--- a/drivers/net/phy/micrel.c
+++ b/drivers/net/phy/micrel.c
@@ -25,6 +25,7 @@
#include <linux/micrel_phy.h>
#include <linux/of.h>
#include <linux/clk.h>
+#include <linux/delay.h>
/* Operation Mode Strap Override */
#define MII_KSZPHY_OMSO 0x16
@@ -952,6 +953,12 @@ static int kszphy_resume(struct phy_device *phydev)
genphy_resume(phydev);
+ /* After switching from power-down to normal mode, an internal global
+ * reset is automatically generated. Wait a minimum of 1 ms before
+ * read/write access to the PHY registers.
+ */
+ usleep_range(1000, 2000);
+
ret = kszphy_config_reset(phydev);
if (ret)
return ret;