This patch series adds a driver for the 16550-like UARTs on National Instruments (NI) embedded controller hardware. These UARTs have an interface that is compatble with the TL16C550C (for which we build on top of 8250_core) but also has extra registers for the embedded RS-232/RS-485 tranceiver control circuitry. Changes from v3 -> v4: - remove "clock-names" from schema, as there is only one clock - remove legacy "clock-frequency" from schema - use GENMASK - fix spacing - fix uartclk on NIC792B devices - add comments to clarify flag usage v3: https://lore.kernel.org/linux-serial/20230329154235.615349-1-brenda.streiff@xxxxxx/T/#me4a5f3dfe0282145565d409f06934739b7a4b023 v2: https://lore.kernel.org/linux-serial/20230329154235.615349-1-brenda.streiff@xxxxxx/T/#mbdd219bdffc41e766634440ff6fe37e75d5a8c0e v1: https://lore.kernel.org/linux-serial/20230329154235.615349-1-brenda.streiff@xxxxxx/T/#m05ac0a562351ebf2807c3c226cbe9ba3ebf0045e Brenda Streiff (2): dt-bindings: serial: ni,ni16650: add bindings serial: 8250: add driver for NI UARTs .../bindings/serial/ni,ni16550.yaml | 64 +++ MAINTAINERS | 7 + drivers/tty/serial/8250/8250_ni.c | 467 ++++++++++++++++++ drivers/tty/serial/8250/Kconfig | 13 + drivers/tty/serial/8250/Makefile | 1 + 5 files changed, 552 insertions(+) create mode 100644 Documentation/devicetree/bindings/serial/ni,ni16550.yaml create mode 100644 drivers/tty/serial/8250/8250_ni.c -- 2.30.2
