Add DT binding doc for iProc Shared MDIO Controller which
populate all masters to Shared MDIO framework.
Signed-off-by: Pramod Kumar <pramod.ku...@broadcom.com>
Reviewed-by: Ray Jui <ray....@broadcom.com>
Reviewed-by: Scott Branden <scott.bran...@broadcom.com>
---
.../bindings/bus/brcm,iproc-shared-mdio.txt | 76 ++++++++++++++++++++++
1 file changed, 76 insertions(+)
create mode 100644
Documentation/devicetree/bindings/bus/brcm,iproc-shared-mdio.txt
diff --git a/Documentation/devicetree/bindings/bus/brcm,iproc-shared-mdio.txt
b/Documentation/devicetree/bindings/bus/brcm,iproc-shared-mdio.txt
new file mode 100644
index 0000000..f455f3d
--- /dev/null
+++ b/Documentation/devicetree/bindings/bus/brcm,iproc-shared-mdio.txt
@@ -0,0 +1,76 @@
+Broadcom iProc Shared MDIO Controller
+
+Required properties:
+- compatible:
+ "brcm,iproc-shared-mdio" for shared MDIO controller.
+- reg: specifies the base physical address and size of the registers
+- reg-names: should be "mdio"
+- #address-cells: must be 1.
+- #size-cells: must be 0.
+
+optional:
+child nodes: Masters are represented as a child node of shared MDIO controller
+and all the PHYs handled by this master are represented as its child node.
+
+Master nodes properties are defined as-
+
+Required properties:
+- compatible: Used to match driver of this PHY.
+- reg: MDIO master ID.
+- #address-cells: must be 1.
+- #size-cells: must be 0.
+
+optional:
+-brcm,phy-internal: if presents, PHYs are internal. Absence shows phy is
+external.
+-brcm,is-c45: if presents, Controller uses Clause-45 to issue MDIO transaction.
+else Controller uses Clause-22 for transactions.
+
+PHY nodes are represented as the child node of Master. Child nodes properties
+are defined as-
+
+Required properties:
+-reg: phy id of attached PHY.
+
+optional:
+There could be additional properties required to configure the specific phy
like
+phy-mode in case of gpphy node below. These should be defined here and used by
+respective drivers.
+
+Example:
+iproc_mdio: iproc_mdio@663f0000 {
+ compatible = "brcm,iproc-shared-mdio";
+ reg = <0x6602023c 0x14>;
+ reg-names = "mdio";
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ sata-master@6 {
+ compatible = "brcm,iproc-ns2-sata-phy";
+ reg = <0x6>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ brcm,phy-internal;
+
+ sata_phy0: sata-phy@1 {
+ reg = <0x1>;
+ #phy-cells = <0>;
+ };
+
+ sata_phy1: sata-phy@2 {
+ reg = <0x2>;
+ #phy-cells = <0>;
+ };
+ };
+
+ eth-master@0 {
+ compatible = "brcm,iproc-mdio-master-eth";
+ reg = <0x0>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ gphy0: eth-phy@10 {
+ reg = <0x10>;
+ phy-mode = "mii";
+ };
+ };
+};
--
1.9.1
