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e1721ba0e6
Added bindings specification for bitbanged gpio driver for Dallas one wire protocol Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com>
41 lines
822 B
Plaintext
41 lines
822 B
Plaintext
W1 gpio device binding - one wire protocol over bitbanged gpio
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=======================
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Child nodes are required in device tree. The driver will detect
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the devices serial number and then search in the child nodes in the device tree
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for the proper node and try to match it with the device.
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Also check doc/device-tree-bindings/w1-eeprom for possible child nodes drivers
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Driver:
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- drivers/w1/w1-gpio.c
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Software w1 device-tree node properties:
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Required:
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* compatible = "w1-gpio";
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* gpios = <...>;
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This is the gpio used for one wire protocol, using bitbanging
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Optional:
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* none
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Example:
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onewire_tm: onewire {
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compatible = "w1-gpio";
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gpios = <&pioA 32 0>;
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};
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Example with child:
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onewire_tm: onewire {
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compatible = "w1-gpio";
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gpios = <&pioA 32 0>;
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eeprom1: eeprom@0 {
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compatible = "maxim,ds24xxx";
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}
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};
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