tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1Device-Tree bindings for i2c gpio driver
2
3Required properties:
4 - compatible = "i2c-gpio";
5 - gpios: sda and scl gpio
6
7
8Optional properties:
9 - i2c-gpio,sda-open-drain: sda as open drain
10 - i2c-gpio,scl-open-drain: scl as open drain
11 - i2c-gpio,scl-output-only: scl as output only
12 - i2c-gpio,delay-us: delay between GPIO operations (may depend on each platform)
13 - i2c-gpio,timeout-ms: timeout to get data
14
15Example nodes:
16
17i2c@0 {
18 compatible = "i2c-gpio";
19 gpios = <&pioA 23 0 /* sda */
20 &pioA 24 0 /* scl */
21 >;
22 i2c-gpio,sda-open-drain;
23 i2c-gpio,scl-open-drain;
24 i2c-gpio,delay-us = <2>; /* ~100 kHz */
25 #address-cells = <1>;
26 #size-cells = <0>;
27
28 rv3029c2@56 {
29 compatible = "rv3029c2";
30 reg = <0x56>;
31 };
32};