BBAI-64 device tree overlays

RobertCNelson · July 20, 2022, 7:56pm

The extlinux options for overlays is listed here:

the repo and branch is:

git clone -b v5.10.x-ti-arm64 https://github.com/beagleboard/BeagleBoard-DeviceTrees/
cd ./BeagleBoard-DeviceTrees/
make
sudo make install

There are 3 current overlays…

I’m working on mergeing these in…

github.com

jadonk/BeagleBoard-DeviceTrees/blob/ai64/src/arm64/k3-j721e-beagleboneai64.dts#L857-L874


      
          /* macro: BONE_PIN( <pin>, <mode_name>, <register_value_macro(s)> */
          #define BONE_PIN(XX,ZZ,QQ) \
          	XX##_##ZZ##_pin: pinmux_##XX##_##ZZ##_pin { pinctrl-single,pins = < QQ >; };
          
          	/* Full P8/P9 header mode definitions */
          	/* P8_01 - GND */
          	/* P8_02 - GND */
          	BONE_PIN(P8_03, default,   P8_03(PIN_INPUT, 7))
          	BONE_PIN(P8_03, pruout,    P8_03(INPUT_DISABLE, 0))
          	BONE_PIN(P8_03, pruin,     P8_03(PIN_INPUT, 1))
          	BONE_PIN(P8_03, can,       P8_03(INPUT_EN, 6))
          	BONE_PIN(P8_03, gpio,      P8_03(INPUT_EN, 7))
          	BONE_PIN(P8_03, gpio_pu,   P8_03(PIN_INPUT_PULLUP, 7))
          	BONE_PIN(P8_03, gpio_pd,   P8_03(PIN_INPUT_PULLDOWN, 7))
          
          	BONE_PIN(P8_04, default,   P8_04(PIN_INPUT, 7))
          	BONE_PIN(P8_04, pruout,    P8_04(INPUT_DISABLE, 0))
          	BONE_PIN(P8_04, pruin,     P8_04(PIN_INPUT, 1))

Right not mostly making it automated from ti’s json files… As hand edits become too complex!

Regards,