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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /Documentation/devicetree/bindings/net/dsa/lan9303.txt | |
parent | Initial commit. (diff) | |
download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip |
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'Documentation/devicetree/bindings/net/dsa/lan9303.txt')
-rw-r--r-- | Documentation/devicetree/bindings/net/dsa/lan9303.txt | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/net/dsa/lan9303.txt b/Documentation/devicetree/bindings/net/dsa/lan9303.txt new file mode 100644 index 000000000..46a732087 --- /dev/null +++ b/Documentation/devicetree/bindings/net/dsa/lan9303.txt @@ -0,0 +1,100 @@ +SMSC/MicroChip LAN9303 three port ethernet switch +------------------------------------------------- + +Required properties: + +- compatible: should be + - "smsc,lan9303-i2c" for I2C managed mode + or + - "smsc,lan9303-mdio" for mdio managed mode + +Optional properties: + +- reset-gpios: GPIO to be used to reset the whole device +- reset-duration: reset duration in milliseconds, defaults to 200 ms + +Subnodes: + +The integrated switch subnode should be specified according to the binding +described in dsa/dsa.txt. The CPU port of this switch is always port 0. + +Note: always use 'reg = <0/1/2>;' for the three DSA ports, even if the device is +configured to use 1/2/3 instead. This hardware configuration will be +auto-detected and mapped accordingly. + +Example: + +I2C managed mode: + + master: masterdevice@X { + + fixed-link { /* RMII fixed link to LAN9303 */ + speed = <100>; + full-duplex; + }; + }; + + switch: switch@a { + compatible = "smsc,lan9303-i2c"; + reg = <0xa>; + reset-gpios = <&gpio7 6 GPIO_ACTIVE_LOW>; + reset-duration = <200>; + + ports { + #address-cells = <1>; + #size-cells = <0>; + + port@0 { /* RMII fixed link to master */ + reg = <0>; + ethernet = <&master>; + }; + + port@1 { /* external port 1 */ + reg = <1>; + label = "lan1"; + }; + + port@2 { /* external port 2 */ + reg = <2>; + label = "lan2"; + }; + }; + }; + +MDIO managed mode: + + master: masterdevice@X { + phy-handle = <&switch>; + + mdio { + #address-cells = <1>; + #size-cells = <0>; + + switch: switch-phy@0 { + compatible = "smsc,lan9303-mdio"; + reg = <0>; + reset-gpios = <&gpio7 6 GPIO_ACTIVE_LOW>; + reset-duration = <100>; + + ports { + #address-cells = <1>; + #size-cells = <0>; + + port@0 { + reg = <0>; + ethernet = <&master>; + }; + + port@1 { /* external port 1 */ + reg = <1>; + label = "lan1"; + }; + + port@2 { /* external port 2 */ + reg = <2>; + label = "lan2"; + }; + }; + }; + }; + }; |