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path: root/drivers/net/phy/micrel.c
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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 995110804a4b..fe03a3a2c4c2 100644
--- a/drivers/net/phy/micrel.c
+++ b/drivers/net/phy/micrel.c
@@ -28,6 +28,7 @@
#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
@@ -730,6 +731,12 @@ 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);
+
/* Enable PHY Interrupts */
if (phy_interrupt_is_valid(phydev)) {
phydev->interrupts = PHY_INTERRUPT_ENABLED;