There is no 'config UART' base definition in the tree; the only
definition was an accidental bare declaration in the
cy8cproto_062_4343w board Kconfig.defconfig, so every
'select UART' resolved against a phantom bool that gates nothing.
- bluetooth: hci: BT_AIROC: drop the select. BT_H4 already selects
BT_UART, which selects SERIAL and UART_INTERRUPT_DRIVEN, so the
H4 transport is fully covered.
- sensor: explorir_m, fcx_mldx5, s3km1110: drop the select. These
drivers already have 'depends on UART_INTERRUPT_DRIVEN', which
requires SERIAL; replacing the select with 'select SERIAL' would
create a Kconfig dependency loop through UART_INTERRUPT_DRIVEN.
- input: ch9350l: drop the select for the same reason (it depends
on SERIAL_SUPPORT_INTERRUPT and selects UART_INTERRUPT_DRIVEN).
- stepper: adi_tmc: STEPPER_ADI_TMC_UART: replace with
'select SERIAL', matching the sibling STEPPER_ADI_TMCM_RS485
symbol, so enabling the UART bus variant actually enables the
serial drivers.
Found by a full-tree Kconfig audit cross-referencing every defined
symbol against its uses.
Assisted-by: Claude:claude-fable-5
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
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