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chao an
cfd1771981
This PR adds complete driver support for the Xilinx UART Peripheral System (XUARTPS) in the NuttX serial driver framework. The implementation includes the core driver code (uart_xlnx_ps.c), configuration files (Kconfig-xlnxps), header definitions (uart_xlnx_ps.h), and integration with the existing NuttX build system (CMakeLists.txt, Make.defs, Kconfig). The driver supports UART0 configuration with customizable parameters (base address, clock frequency, IRQ number, baud rate, parity, data bits, stop bits), RX/TX buffer sizing, hardware flow control (RTS/CTS), interrupt-driven data transfer, and console mapping for XUARTPS UART0. It also provides standard serial driver operations (setup, shutdown, attach/detach, ioctl, send/receive) and early serial initialization for boot-time console access. Signed-off-by: chao an <anchao.archer@bytedance.com>