Using the common Clock code to describe the UART baud rate clock makes it easier for the UART driver to be compatible with the baud rate requirements of the UART IP on different meson chips. Add Meson S4 SoC compatible. Yu Tu (5): dt-bindings: serial: meson: Drop compatible = amlogic,meson-gx-uart. tty: serial: meson: Request the register region in meson_uart_probe() tty: serial: meson: The UART baud rate calculation is described using the common clock code. tty: serial: meson: Make the bit24 and bit [26,27] of the UART_REG5 register writable tty: serial: meson: Added S4 SOC compatibility. V1 -> V2: Use CCF to describe the UART baud rate clock.Make some changes as discussed in the email V2 -> V3: add compatible = "amlogic,meson-gx-uart". Because it must change the DTS before it can be deleted V3 -> V4: Change CCF to describe the UART baud rate clock as discussed in the email. Link:https://lore.kernel.org/linux-amlogic/20211230102110.3861-4-yu.tu@xxxxxxxxxxx/ .../bindings/serial/amlogic,meson-uart.yaml | 10 +- drivers/tty/serial/meson_uart.c | 244 ++++++++++++------ 2 files changed, 177 insertions(+), 77 deletions(-) -- 2.33.1