dt-bindings: net: xilinx_axienet: Document additional clocks

Update DT bindings to describe all of the clocks that the axienet
driver will now be able to make use of.

Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Robert Hancock <robert.hancock@calian.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/Documentation/devicetree/bindings/net/xilinx_axienet.txt b/Documentation/devicetree/bindings/net/xilinx_axienet.txt
index 2cd4524..b8e4894 100644 (file)
--- a/Documentation/devicetree/bindings/net/xilinx_axienet.txt
+++ b/Documentation/devicetree/bindings/net/xilinx_axienet.txt
@@ -42,11 +42,23 @@ Optional properties:
                  support both 1000BaseX and SGMII modes. If set, the phy-mode
                  should be set to match the mode selected on core reset (i.e.
                  by the basex_or_sgmii core input line).
-- clocks       : AXI bus clock for the device. Refer to common clock bindings.
-                 Used to calculate MDIO clock divisor. If not specified, it is
-                 auto-detected from the CPU clock (but only on platforms where
-                 this is possible). New device trees should specify this - the
-                 auto detection is only for backward compatibility.
+- clock-names:           Tuple listing input clock names. Possible clocks:
+                 s_axi_lite_clk: Clock for AXI register slave interface
+                 axis_clk: AXI4-Stream clock for TXD RXD TXC and RXS interfaces
+                 ref_clk: Ethernet reference clock, used by signal delay
+                          primitives and transceivers
+                 mgt_clk: MGT reference clock (used by optional internal
+                          PCS/PMA PHY)
+
+                 Note that if s_axi_lite_clk is not specified by name, the
+                 first clock of any name is used for this. If that is also not
+                 specified, the clock rate is auto-detected from the CPU clock
+                 (but only on platforms where this is possible). New device
+                 trees should specify all applicable clocks by name - the
+                 fallbacks to an unnamed clock or to CPU clock are only for
+                 backward compatibility.
+- clocks:        Phandles to input clocks matching clock-names. Refer to common
+                 clock bindings.
 - axistream-connected: Reference to another node which contains the resources
                       for the AXI DMA controller used by this device.
                       If this is specified, the DMA-related resources from that
@@ -62,7 +74,8 @@ Example:
                device_type = "network";
                interrupt-parent = <&microblaze_0_axi_intc>;
                interrupts = <2 0 1>;
-               clocks = <&axi_clk>;
+               clock-names = "s_axi_lite_clk", "axis_clk", "ref_clk", "mgt_clk";
+               clocks = <&axi_clk>, <&axi_clk>, <&pl_enet_ref_clk>, <&mgt_clk>;
                phy-mode = "mii";
                reg = <0x40c00000 0x40000 0x50c00000 0x40000>;
                xlnx,rxcsum = <0x2>;