After some digging in downstream sources, it was found that the TPS65132 outputs are fixed to +5.4V and -5.4V respectively. This is further confirmed on runtime through debugfs, the troubleshooting guide confirms this as well. Specify these limits as such. Signed-off-by: Stanislav Jakubek <stano.jakubek@gmail.com> Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com> Link: https://lore.kernel.org/r/b67ed6c7813fa52cf00b473dded9b5042102f593.1746711762.git.stano.jakubek@gmail.com Signed-off-by: Bjorn Andersson <andersson@kernel.org>