amd-xgbe: Add hardware timestamp support

This patch adds support for Tx and Rx hardware timestamping.

Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 10 insertions, 6 deletions

diff --git a/Documentation/devicetree/bindings/net/amd-xgbe.txt b/Documentation/devicetree/bindings/net/amd-xgbe.txt
index f6db1ba87a3f..41354f730beb 100644
--- a/Documentation/devicetree/bindings/net/amd-xgbe.txt
+++ b/Documentation/devicetree/bindings/net/amd-xgbe.txt
@@ -8,10 +8,14 @@ Required properties:
 - interrupt-parent: Should be the phandle for the interrupt controller
   that services interrupts for this device
 - interrupts: Should contain the amd-xgbe interrupt
-- clocks: Should be the DMA clock for the amd-xgbe device (used for
-  calculating the correct Rx interrupt watchdog timer value on a DMA
-  channel for coalescing)
-- clock-names: Should be the name of the DMA clock, "dma_clk"
+- clocks:
+   - DMA clock for the amd-xgbe device (used for calculating the
+     correct Rx interrupt watchdog timer value on a DMA channel
+     for coalescing)
+   - PTP clock for the amd-xgbe device
+- clock-names: Should be the names of the clocks
+   - "dma_clk" for the DMA clock
+   - "ptp_clk" for the PTP clock
 - phy-handle: See ethernet.txt file in the same directory
 - phy-mode: See ethernet.txt file in the same directory
 
@@ -27,8 +31,8 @@ Example:
                       <0 0xe0780000 0 0x80000>;
                 interrupt-parent = <&gic>;
                 interrupts = <0 325 4>;
-                clocks = <&xgbe_clk>;
-                clock-names = "dma_clk";
+                clocks = <&xgbe_dma_clk>, <&xgbe_ptp_clk>;
+                clock-names = "dma_clk", "ptp_clk";
                 phy-handle = <&phy>;
                 phy-mode = "xgmii";
                 mac-address = [ 02 a1 a2 a3 a4 a5 ];