From: Shaohui Xie <Shaohui.Xie@xxxxxxxxxxxxx>
This binding is for FMan MDIO, it covers FMan v2 & FMan v3.
Signed-off-by: Shaohui Xie <Shaohui.Xie@xxxxxxxxxxxxx>
---
changes in V2:
addressed comments from Scott in V1.
.../devicetree/bindings/powerpc/fsl/fman.txt | 69 ++++++++++++++++++++++
1 file changed, 69 insertions(+)
diff --git a/Documentation/devicetree/bindings/powerpc/fsl/fman.txt b/Documentation/devicetree/bindings/powerpc/fsl/fman.txt
index edeea16..1523a87 100644
--- a/Documentation/devicetree/bindings/powerpc/fsl/fman.txt
+++ b/Documentation/devicetree/bindings/powerpc/fsl/fman.txt
@@ -7,6 +7,7 @@ CONTENTS
- FMan MURAM Node
- FMan dTSEC/XGEC/mEMAC Node
- FMan IEEE 1588 Node
+ - FMan MDIO Node
- Example
=============================================================================
@@ -357,6 +358,68 @@ ptp-timer@fe000 {
};
=============================================================================
+FMan MDIO Node
+
+DESCRIPTION
+
+The MDIO is a bus to which the PHY devices are connected.
+
+PROPERTIES
+
+- compatible
+ Usage: required
+ Value type: <stringlist>
+ Definition: A standard property.
+ Must include "fsl,fman-mdio" for 1 Gb/s MDIO from FMan v2.
+ Must include "fsl,fman-xmdio" for 10 Gb/s MDIO from FMan v2.
+ Must include "fsl,fman-memac-mdio" for 1/10 Gb/s MDIO from
+ FMan v3.
+
+- reg
+ Usage: required
+ Value type: <prop-encoded-array>
+ Definition: A standard property.
+
+- bus-frequency
+ Usage: optional
+ Value type: <u32>
+ Definition: Specifies external MDIO bus clock speed which is
+ different from MDIO standard 2.5MHz. Should be defined for SoCs
+ on which the standard one cannot work.
+
+- interrupts
+ Usage: optional
+ Value type: <prop-encoded-array>
+ Definition: Event interrupt of external MDIO controller.
+ 1 Gb/s MDIO and 10 Gb/s MDIO has one interrupt respectively.
+
+- fsl,fman-internal-mdio
+ Usage: required for internal MDIO
+ Value type: boolean
+ Definition: Fman has internal MDIO for internal PCS(Physical
+ Coding Sublayer) PHYs and external MDIO for external PHYs.
+ The settings and programming routines for internal/external
+ MDIO are different. Must be included for internal MDIO.
+
+EXAMPLE
+
+Example for FMan v2 external MDIO:
+
+mdio@f1000 {
+ compatible = "fsl,fman-xmdio";
+ reg = <0xf1000 0x1000>;
+ bus-frequency = <20000>;
+};
+
+Example for FMan v3 internal MDIO:
+
+mdio@f1000 {
+ compatible = "fsl,fman-memac-mdio";
+ reg = <0xf1000 0x1000>;
+ fsl,fman-internal-mdio;
+};
+
+=============================================================================
Example
fman@400000 {
@@ -531,4 +594,10 @@ fman@400000 {
compatible = "fsl,fman-ptp-timer";
reg = <0xfe000 0x1000>;
};
+
+ mdio@f1000 {
+ compatible = "fsl,fman-xmdio";
+ reg = <0xf1000 0x1000>;
+ bus-frequency = <20000>;
+ };
};
--
1.8.4.1
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