netdev - [PATCH v2 net-next 4/5] dsa: Add spi support to Microchip KSZ switches

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Message-ID: <9235D6609DB808459E95D78E17F2E43D40A632CA@CHN-SV-EXMX02.mchp-main.com>
Date:   Fri, 12 May 2017 20:08:00 +0000
From:   <Woojung.Huh@...rochip.com>
To:     <andrew@...n.ch>, <f.fainelli@...il.com>,
        <vivien.didelot@...oirfairelinux.com>,
        <sergei.shtylyov@...entembedded.com>, <netdev@...r.kernel.org>
CC:     <davem@...emloft.net>, <UNGLinuxDriver@...rochip.com>
Subject: [PATCH v2 net-next 4/5] dsa: Add spi support to Microchip KSZ
 switches

From: Woojung Huh <Woojung.Huh@...rochip.com>

A sample SPI configuration for Microchip KSZ switches.

Signed-off-by: Woojung Huh <Woojung.Huh@...rochip.com>
---
 Documentation/devicetree/bindings/net/dsa/ksz.txt | 73 +++++++++++++++++++++++
 1 file changed, 73 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/net/dsa/ksz.txt

diff --git a/Documentation/devicetree/bindings/net/dsa/ksz.txt b/Documentation/devicetree/bindings/net/dsa/ksz.txt
new file mode 100644
index 0000000..8a13966
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/dsa/ksz.txt
@@ -0,0 +1,73 @@
+Microchip KSZ Series Ethernet switches
+==================================
+
+Required properties:
+
+- compatible: For external switch chips, compatible string must be exactly one
+  of: "microchip,ksz9477"
+
+See Documentation/devicetree/bindings/dsa/dsa.txt for a list of additional
+required and optional properties.
+
+Examples:
+
+Ethernet switch connected via SPI to the host, CPU port wired to eth0:
+
+		eth0: ethernet@...01000 {
+			fixed-link {
+				reg = <7>
+				speed = <1000>;
+				duplex-full;
+			};
+		};
+
+		spi1: spi@...08000 {
+			pinctrl-0 = <&pinctrl_spi_ksz>;
+			cs-gpios = <&pioC 25 0>;
+			id = <1>;
+			status = "okay";
+
+			ksz9477: ksz9477@0 {
+				compatible = "microchip,ksz9477";
+				reg = <0>;
+
+				spi-max-frequency = <44000000>;
+				spi-cpha;
+				spi-cpol;
+
+				status = "okay";
+				ports {
+					#address-cells = <1>;
+					#size-cells = <0>;
+					port@0 {
+						reg = <0>;
+						label = "lan1";
+					};
+					port@1 {
+						reg = <1>;
+						label = "lan2";
+					};
+					port@2 {
+						reg = <2>;
+						label = "lan3";
+					};
+					port@3 {
+						reg = <3>;
+						label = "lan4";
+					};
+					port@4 {
+						reg = <4>;
+						label = "lan5";
+					};
+					port@5 {
+						reg = <5>;
+						label = "cpu";
+						ethernet = <&eth0>;
+						fixed-link {
+							speed = <1000>;
+							full-duplex;
+						};
+					};
+				};
+			};
+		};
-- 
2.7.4