Pull tty / serial driver updates from Greg KH:
 "Here is the tty/serial driver set of changes for 6.14-rc1. Nothing
  major in here, it was delayed a bit due to a regression found in
  linux-next which has now been reverted and verified that it is fixed.

  Other than the reverts, highlights include:

   - 8250 work to get the nbcon mode working (partially reverted)

   - altera_jtaguart minor fixes

   - fsl_lpuart minor updates

   - sh-sci driver minor updatesa

   - other tiny driver updates and cleanups

  All of these have been in linux-next for a while, and now with no
  reports of problems (thanks to the reverts)"

* tag 'tty-6.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (44 commits)
  Revert "serial: 8250: Switch to nbcon console"
  Revert "serial: 8250: Revert "drop lockdep annotation from serial8250_clear_IER()""
  serial: sh-sci: Increment the runtime usage counter for the earlycon device
  serial: sh-sci: Clean sci_ports[0] after at earlycon exit
  serial: sh-sci: Do not probe the serial port if its slot in sci_ports[] is in use
  serial: sh-sci: Move runtime PM enable to sci_probe_single()
  serial: sh-sci: Drop __initdata macro for port_cfg
  serial: kgdb_nmi: Remove unused knock code
  tty: Permit some TIOCL_SETSEL modes without CAP_SYS_ADMIN
  tty: xilinx_uartps: split sysrq handling
  serial: 8250: Revert "drop lockdep annotation from serial8250_clear_IER()"
  serial: 8250: Switch to nbcon console
  serial: 8250: Provide flag for IER toggling for RS485
  serial: 8250: Use high-level writing function for FIFO
  serial: 8250: Use frame time to determine timeout
  serial: 8250: Adjust the timeout for FIFO mode
  tty: atmel_serial: Use of_property_present() for non-boolean properties
  serial: sc16is7xx: Add polling mode if no IRQ pin is available
  dt-bindings: serial: sc16is7xx: Add description for polling mode
  tty: serial: atmel: make it selectable for ARCH_LAN969X
  ...

Found SpacemiT's K1 uart controller is compatible with
Intel's Xscale uart, but it's still worth to introduce a new compatible.

Acked-by: Conor Dooley <conor.dooley@microchip.com>
Acked-by: Palmer Dabbelt <palmer@rivosinc.com>
Signed-off-by: Yixun Lan <dlan@gentoo.org>

Polling mode is enabled if the "interrupts" property is missing.
Thus, this commit deletes "interrupts" entry from "required" section
and adds a description for the fallback to polling mode at the
"interrupts" entry.

Signed-off-by: Andre Werner <andre.werner@systec-electronic.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20250110073104.1029633-1-andre.werner@systec-electronic.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Document scif bindings for the Renesas RZ/G3E (a.k.a r9a09g047) SoC.
SCIF interface in Renesas RZ/G3E is similar to the one available in
RZ/V2H.

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20241122124558.149827-2-biju.das.jz@bp.renesas.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

The UMS9632 uses the SC9632 serial device.

Signed-off-by: Wenhua Lin <Wenhua.Lin@unisoc.com>
Link: https://lore.kernel.org/r/20241113110516.2166328-3-Wenhua.Lin@unisoc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Add dedicated samsung,exynos8895-uart compatible to the dt-schema for
representing uart of the Exynos8895 SoC.

Like GS101, it has a required DT property samsung,uart-fifosize, but
it does not exhibit the 32 bit register access limit.

Signed-off-by: Ivaylo Ivanov <ivo.ivanov.ivanov1@gmail.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20241023090902.538040-2-ivo.ivanov.ivanov1@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

The UART of SG2044 is modified version of the standard Synopsys
DesignWare UART. The UART on SG2044 relys on the internal divisor
and can not set right clock rate for the common bitrates.

Add compatibles string for the Sophgo SG2044 uarts.

Signed-off-by: Inochi Amaoto <inochiama@gmail.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20241024062105.782330-3-inochiama@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Each vendor have an items entry of its own compatible, It is needless
and can be merged as it share the same base "snps,dw-apb-uart"
compatible.

Merge the duplicate compatible entry into one item entry.

Signed-off-by: Inochi Amaoto <inochiama@gmail.com>
Suggested-by: Conor Dooley <conor@kernel.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20241024062105.782330-2-inochiama@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Rockchip RK3528 comes with a snps-dw-apb-uart compatible UART. Document
it in dt-bindings.

Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Yao Zi <ziyao@disroot.org>
Link: https://lore.kernel.org/r/20240919111413.45413-4-ziyao@disroot.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Add a Rockchip RK3576 compatible.

Signed-off-by: Detlev Casanova <detlev.casanova@collabora.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: Heiko Stuebner <heiko@sntech.de>
Link: https://lore.kernel.org/r/20240918150704.1163581-2-detlev.casanova@collabora.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>