i.MX Processors中的主题 Re: about IMX6D uboot

about IMX6D uboot

cotway — Sun, 23 Jun 2019 17:57:35 GMT

Refer to the official imx6q board to customize the imx6d board(pmic and ddr3 are the same ),but can't use mfgtools to download uboot. especially, loading U-boot all the time. who can help me ? where should i modify ?

Re: about IMX6D uboot

Rita_Wang — Tue, 25 Jun 2019 04:02:38 GMT

Hi,

The i.MX6Q and i.MX6D are the same die, they're just fused differently. Here you can check the uboot fuse NUM_CORES, in our reference maunual you can see the 0x430.

i.MX6 Quad versus Dual differentiated by fuse NUM_CORES .

Have a nice day

Rita

Re: about IMX6D uboot

cotway — Tue, 25 Jun 2019 04:18:30 GMT

But,after changed cpu to imx6q,the result is the same. mfgtools can loading uboot image.etc.,but jump to os few minutes ,loading uboot again all the time.

Re: about IMX6D uboot

Rita_Wang — Thu, 27 Jun 2019 03:40:46 GMT

So sorry for above reply, the i.MX6D software is the same with the i.MX6Q. When the power the board, and system running, it will detect the chip. Here your error maybe caused by the DDR configuration, you can use the ddr test tool to test it first.

https://community.nxp.com/docs/DOC-105652

Re: about IMX6D uboot

cotway — Mon, 01 Jul 2019 11:11:26 GMT

thanks your reply.we had tried ,when Excel sets 528Mhz 64bit calibration failed；when Excel sets 400mhz 32bit calibration succeeded,but in the ddr stress ,(400-600mhz)432mhz will be error.although,changed register in the uboot ,serial will be output when we use sb_load tools,however，just five line outputs. we are checking para or pcb layout.

Re: about IMX6D uboot

Rita_Wang — Thu, 04 Jul 2019 07:48:12 GMT

The test tool support the 528Mhz and 400MHz, others are not support. Here your board test succeeded on the 400MHz, so you can set the 400MHz in your uboot. And the mfgtool firmware os also need to set and build.