AUX_CH_D_XELPD
[AUX_CH_D_XELPD] = DP_AUX_D,
.aux_ch_start = AUX_CH_D_XELPD,
if (DISPLAY_VER(display) >= 13 && aux_ch >= AUX_CH_D_XELPD)
snprintf(buf, size, "%c", 'A' + aux_ch - AUX_CH_D_XELPD + AUX_CH_D);