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 compatible with the TL16C550C (for which we build on top of 8250_core) but also has extra registers for the embedded RS-232/RS-485 transceiver control circuitry. --- Changes from v4 -> v5: - set_mctrl callback needs to set CLKSEL in up->mcr, not local mctrl - initialize potentially-uninitialized 'prescaler' - Style fixes: - comment the effect of the PCR modes - remove extraneous parens - add to Makefile in the post-66ebe67d1b68 sorted order v4: https://lore.kernel.org/linux-serial/20230505213850.829639-1-brenda.streiff@xxxxxx/ v3: https://lore.kernel.org/linux-serial/20230418223800.284601-1-brenda.streiff@xxxxxx/ v2: https://lore.kernel.org/linux-serial/20230410211152.94332-1-brenda.streiff@xxxxxx/ v1: https://lore.kernel.org/linux-serial/20230329154235.615349-1-brenda.streiff@xxxxxx/ Brenda Streiff (2): dt-bindings: serial: ni,ni16650: add bindings serial: 8250: add driver for NI UARTs .../bindings/serial/ni,ni16550.yaml | 51 ++ MAINTAINERS | 7 + drivers/tty/serial/8250/8250_ni.c | 478 ++++++++++++++++++ drivers/tty/serial/8250/Kconfig | 13 + drivers/tty/serial/8250/Makefile | 1 + 5 files changed, 550 insertions(+) create mode 100644 Documentation/devicetree/bindings/serial/ni,ni16550.yaml create mode 100644 drivers/tty/serial/8250/8250_ni.c -- 2.30.2
