supports eg20t ptp clock

Supports EG20T ptp clock in the driver

Changes e-mail address.

Adds number.

Signed-off-by: Takahiro Shimizu <tshimizu818@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 13 insertions, 0 deletions

diff --git a/drivers/ptp/Kconfig b/drivers/ptp/Kconfig
index 68d72010229..cd9bc3b129b 100644
--- a/drivers/ptp/Kconfig
+++ b/drivers/ptp/Kconfig
@@ -72,4 +72,17 @@ config DP83640_PHY
           In order for this to work, your MAC driver must also
           implement the skb_tx_timetamp() function.
 
+config PTP_1588_CLOCK_PCH
+        tristate "Intel PCH EG20T as PTP clock"
+        depends on PTP_1588_CLOCK
+        depends on PCH_GBE
+        help
+          This driver adds support for using the PCH EG20T as a PTP
+          clock. This clock is only useful if your PTP programs are
+          getting hardware time stamps on the PTP Ethernet packets
+          using the SO_TIMESTAMPING API.
+
+          To compile this driver as a module, choose M here: the module
+          will be called ptp_pch.
+
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