Not an overlay but…
I added these to am335x-bone-common.dtsi and got all three I2C devices in /dev
i2c1_pins: pinmux_i2c1_pins {
pinctrl-single,pins = <
0x158 0x72 /* uart1_ctsn.i2c2_sda, SLEWCTRL_SLOW | INPUT_PULLUP | MODE2 /
0x15c 0x72 / uart1_rtsn.i2c2_scl, SLEWCTRL_SLOW | INPUT_PULLUP | MODE2 */
;
};
&i2c1 {
status = “okay”;
pinctrl-names = “default”;
pinctrl-0 = <&i2c1_pins>;
clock-frequency = <100000>;
};
If you browse though the source file it should be fairly self-explanatory where each snippet should go. Tested the bus and it works just fine!