Hi, I suspect that UART flow control (RTS, CTS) does not work on the sipeed lichee rv dock (D1 chip) board with Tina linux. I came to the assumption after testing bluetooth (RTL8723DS). In general BT works, but if the CPU is very busy, I get "Bluetooth: Out-of-order packet arrived (6 != 7)" from the kernel. The device tree is configured as followed:
uart1_pins_a: uart1_pins@0 { pins = "PG6", "PG7", "PG8", "PG9"; function = "uart1"; drive-strength = <10>; bias-pull-up; }; uart1_pins_b: uart1_pins { pins = "PG6", "PG7", "PG8", "PG9"; function = "gpio_in"; }; &uart1 { uart-has-rtscts; pinctrl-names = "default"; pinctrl-0 = <&uart1_pins_a>; pinctrl-1 = <&uart1_pins_b>; status = "okay"; };I assume something is wrong in the device tree and CTS RTS is not activated. Is there something else to activate flow controls?
