MPC8306 qe uart

[go777]

Can MPC8306 QUICC Engine support UART rather than TDM? Need a New QE firm update to support this?

[LPP · Accepted solution]

MPC8306 UCCs support UART.

Please refer to MPC8306RM Section 22.2 "QUICC Engine Implementation Details for the MPC8306 and MPC8306S".

This function doesn't require special firmware.

[go777]

thanks for your response.

For MPC8306, the last firmware is MPC830x_1-0-0, the microcode also support UART & TDM?

In Linux kernel, the dts file for MPC830x(tdm port):

ucc@2400 {

   device_type = "tdm";

   compatible = "ucc-tdm-framer";

   cell-index = <5>;

   tdm-num = <1>;

   si-num = <1>;

   tdm-rx-clock = "clk3";

   tdm-tx-clock = "clk4";

   tdm-rx-sync = "RSYNC";

   tdm-tx-sync = "TSYNC";

   reg = <0x2400 0x200>;

   interrupts = <40>;

   interrupt-parent = <&qeic>;

  };

if I want change it to ucc uart port,I can write like this?

ucc@2400 {

   device_type = "serial";

   compatible = "ucc_uart";

   cell-index = <5>;

   port-number = <0>; /* Which ttyQEx device */

   rx-clock-name = "brg5";

   tx-clock-name = "brg5";

   reg = <0x2400 0x200>;

   interrupts = <40>;

   interrupt-parent = <&qeic>;

  };

I have no knowledge to microcode.

[LPP]

Please, refer to the following docs (RS485 example):