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[PATCH net-next v3 v3 1/2] dt-bindings: net: xilinx_axienet: Document additional clocks

From: Robert Hancock <hidden>
Date: 2021-03-12 19:54:05
Also in: linux-devicetree
Subsystem: networking drivers, open firmware and flattened device tree bindings, the rest · Maintainers: Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds

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

Signed-off-by: Robert Hancock <redacted>
---
 .../bindings/net/xilinx_axienet.txt           | 25 ++++++++++++++-----
 1 file changed, 19 insertions(+), 6 deletions(-)
diff --git a/Documentation/devicetree/bindings/net/xilinx_axienet.txt b/Documentation/devicetree/bindings/net/xilinx_axienet.txt
index 2cd452419ed0..b8e4894bc634 100644
--- 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>;
-- 
2.27.0
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