On May 30, 2023, at 9:09 AM, Nikos Nikoleris <nikos.nikoleris@xxxxxxx> wrote: > > +static void uart0_init_acpi(void) > +{ > + struct spcr_descriptor *spcr = find_acpi_table_addr(SPCR_SIGNATURE); > + > + assert_msg(spcr, "Unable to find ACPI SPCR"); > + uart0_base = ioremap(spcr->serial_port.address, spcr->serial_port.bit_width); > +} Is it possible as a fallback, is SPCR is not available, to UART_EARLY_BASE as address and bit_width as bit-width? I would appreciate it, since it would help my setup.