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author | Emmanuel Vadot <manu@FreeBSD.org> | 2017-07-09 13:12:48 +0000 |
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committer | Emmanuel Vadot <manu@FreeBSD.org> | 2017-07-09 13:12:48 +0000 |
commit | f3f213a6f94d330b77b3910f4c66b62aeec50645 (patch) | |
tree | c3f9fb9d237fa970fbe2a2d425d0be312d0e86a7 /Bindings/net/mdio.txt | |
parent | 8fdc67f730291b64de002bf95d19ae75e058b8ce (diff) | |
download | src-f3f213a6f94d330b77b3910f4c66b62aeec50645.tar.gz src-f3f213a6f94d330b77b3910f4c66b62aeec50645.zip |
Notes
Diffstat (limited to 'Bindings/net/mdio.txt')
-rw-r--r-- | Bindings/net/mdio.txt | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/Bindings/net/mdio.txt b/Bindings/net/mdio.txt new file mode 100644 index 000000000000..96a53f89aa6e --- /dev/null +++ b/Bindings/net/mdio.txt @@ -0,0 +1,37 @@ +Common MDIO bus properties. + +These are generic properties that can apply to any MDIO bus. + +Optional properties: +- reset-gpios: One GPIO that control the RESET lines of all PHYs on that MDIO + bus. +- reset-delay-us: RESET pulse width in microseconds. + +A list of child nodes, one per device on the bus is expected. These +should follow the generic phy.txt, or a device specific binding document. + +The 'reset-delay-us' indicates the RESET signal pulse width in microseconds and +applies to all PHY devices. It must therefore be appropriately determined based +on all PHY requirements (maximum value of all per-PHY RESET pulse widths). + +Example : +This example shows these optional properties, plus other properties +required for the TI Davinci MDIO driver. + + davinci_mdio: ethernet@0x5c030000 { + compatible = "ti,davinci_mdio"; + reg = <0x5c030000 0x1000>; + #address-cells = <1>; + #size-cells = <0>; + + reset-gpios = <&gpio2 5 GPIO_ACTIVE_LOW>; + reset-delay-us = <2>; + + ethphy0: ethernet-phy@1 { + reg = <1>; + }; + + ethphy1: ethernet-phy@3 { + reg = <3>; + }; + }; |