Clarification please
“see what ball P9_14 goes to”
what is a ball in this context?
I do have a copy of AM335x and AMIC110 Sitara Processor TRM (Literature Number: SPRUH73Q) October 2011-Revised December 2019 from TI site: https://www.ti.com/lit/ug/spruh73n/spruh73n.pdf
5000 pages of shear terror. I feel like Dante descending into the Inferno 
9-14 is ZCZ ball U14 gpmc_a2 (gpio1_18) : src/arm/am335x-bone-common-univ.dtsi · v5.10.x-ti-unified · BeagleBoard.org / BeagleBoard-DeviceTrees · GitLab
#define P9_14(mode) AM33XX_IOPAD(0x0848, mode) /* U14: gpmc_a2 */ : include/dt-bindings/board/am335x-bone-pins.h · v5.10.x-ti-unified · BeagleBoard.org / BeagleBoard-DeviceTrees · GitLab
Edit: ball in this context, is really the physical “solder ball location” on the soc using an A-Z by 0-X number grid (U over, 14 across)…
Regards,
A ball in this context are the small semi-circular blobs of solder between the chip
and the printed circuit board.
As for the TRM, I would happily take 5000 pages of information as opposed to
some obscure and in most cases NDA’d marketing brochure any day.
Thanks, that clears it up. Its like an old paper map.
Hehe, Robert beat me to it, but in his latest post, mode is the PINMUX mode,
in this case 0 to 7, which you can find in the TRM.