PowerQUICC ProcessorsのトピックRe: Re: MPC8306 qe uart

MPC8306 qe uart

go777 — Mon, 13 Jan 2014 09:49:43 GMT

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

LPP — Mon, 13 Jan 2014 10:07:47 GMT

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 — Mon, 13 Jan 2014 10:41:03 GMT

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 — Fri, 17 Jan 2014 03:34:13 GMT

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