https://groups.google.com/g/linux-kernel-proxy/c/ThBxwO8pJKo
Pinmux bindings proposal
bindingsproposal
https://opensecura.googlesource.com/3p/lowrisc/opentitan/+/689a5d4e069fc2951bf13d94143929f1e2cdf7c7/hw/ip/pinmux/rtl/pinmux_jtag_buf.sv
hw/ip/pinmux/rtl/pinmux_jtag_buf.sv - 3p/lowrisc/opentitan - Git at Google
https://lkml.org/lkml/2012/1/13/377
LKML: Shawn Guo: Re: [RFC PATCH v3 2/5] pinctrl: add dt binding support for pinmux mappings