i.MX Processors中的主题 Re: how does eim communicate with fpga

how does eim communicate with fpga

jingyangxie — Wed, 29 Nov 2017 03:31:06 GMT

Hi,all

I have a imx6sxsabresd board,want to use eim to communicate with fpga ,can anybody give me any advice ?

Re: how does eim communicate with fpga

jingyangxie — Wed, 29 Nov 2017 06:57:39 GMT

Hi,all

when I add supporting weim in the imx6sx-sdb.dts.the board cannot startup,but when I cancel the support for weim ,the board can startup ,what I add is as follow:

&weim {
   pinctrl-names = "default";
   pinctrl-0 = <&pinctrl_weim_fpga &pinctrl_weim_cs0>;
   #address-cells = <2>;
   #size-cells = <1>;
   ranges = <0 0 0x08000000 0x08000000>;
   status = "ok";

   fpga@0,0 {
      compatible = "fpga";
      reg = <0 0 0x02000000>;
      #address-cells = <1>;
      #size-cells = <1>;
      bank-width = <2>; //EIM_CSnGCR1 //EIM_CSnGCR2 //EIM_CSnRCR1 //EIM_CSnRCR2 //EIM_CSnWCR1 //EIM_CSnWCR2
      fsl,weim-cs-timing = <0x00630081 0x00000001 0x1c022000 0x0000c000 0x1404a38e 0x00000000>;
   };
};

Is there any mistake in my operation?

Re: how does eim communicate with fpga

weidong_sun — Wed, 29 Nov 2017 07:16:08 GMT

Hi xie,

If you want to connect FPGA to EIM interface, you can refer to imx6sx reference manual, page 994, and configure communication mode according to the list below:

Have a nice day!

TIC weidong sun