dan1234 Posted February 14, 2019 Share Posted February 14, 2019 (edited) Hello! In this topic: It was confirmed that more than 1 pin GPIO can be used for 1-wire bus. How can I edit or create my sun8i-h3-w1-gpio.dts for this? Spoiler /dts-v1/; /plugin/; / { compatible = "allwinner,sun8i-h3"; fragment@0 { target = <&pio>; __overlay__ { w1_pins: w1_pins { pins = "PD14"; function = "gpio_in"; }; }; }; fragment@1 { target-path = "/"; __overlay__ { onewire@0 { compatible = "w1-gpio"; pinctrl-names = "default"; pinctrl-0 = <&w1_pins>; gpios = <&pio 3 14 0>; /* PD14 */ status = "okay"; }; }; }; }; Can anyone give an example? Thank you in advance! Edited February 14, 2019 by dan1234 Link to comment Share on other sites More sharing options...
dan1234 Posted February 14, 2019 Author Share Posted February 14, 2019 If I change sun8i-h3-w1-gpio.dts as follows: /dts-v1/; /plugin/; / { compatible = "allwinner,sun8i-h3"; fragment@0 { target = <&pio>; __overlay__ { w1_pins: w1_pins { pins = "PA20" ,"PA10"; functions = "gpio_in"; }; }; }; fragment@1 { target-path = "/"; __overlay__ { onewire@0 { compatible = "w1-gpio"; pinctrl-names = "default"; pinctrl-0 = <&w1_pins>; gpios = <&pio 0 20 0>, <&pio 0 10 0>; status = "okay"; }; }; }; }; That as 1-wire bus works only the first pin (PA20) from the specified. The second pin (PA10) is not working as 1-wire bus. What am I doing wrong? Link to comment Share on other sites More sharing options...
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