net: mdio: add definition for clock stop capable bit

Add a definition for the clock stop capable bit in the PCS MMD. This
bit indicates whether the MAC is able to stop the transmit xMII clock
while it is signalling LPI.

Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Link: https://patch.msgid.link/E1tYADb-0014PV-6T@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/include/uapi/linux/mdio.h b/include/uapi/linux/mdio.h
index f0d3f268240d867e2f0f7447d44689e89b345267..6975f182b22c603c09632613b3f5298642dbe2a6 100644 (file)
--- a/include/uapi/linux/mdio.h
+++ b/include/uapi/linux/mdio.h
@@ -125,6 +125,7 @@
 #define MDIO_STAT1_LPOWERABLE          0x0002  /* Low-power ability */
 #define MDIO_STAT1_LSTATUS             BMSR_LSTATUS
 #define MDIO_STAT1_FAULT               0x0080  /* Fault */
+#define MDIO_PCS_STAT1_CLKSTOP_CAP     0x0040
 #define MDIO_AN_STAT1_LPABLE           0x0001  /* Link partner AN ability */
 #define MDIO_AN_STAT1_ABLE             BMSR_ANEGCAPABLE
 #define MDIO_AN_STAT1_RFAULT           BMSR_RFAULT