imx6solo U-Boot 2017.03启动到MMC

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imx6solo U-Boot 2017.03启动到MMC

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wuxiuxinxiuxin
Contributor II

大家好,我移植“U-Boot 2017.03-imx_v2017.03_4.9.88_2.0.0” 到自己的imx6solo的时候遇到问题,路过的朋友能帮我解答吗?

下面是启动logo:

pastedImage_1.png

mx6solo_4x_mt41j128.cfg有做过压力测试通过之后重新编辑过了, 附件是我的移植记录,

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shaojunke
Contributor I

Hi Wuxiuxin:

    你的问题有解决吗?我也是用这个版本的uboot,移植到imx6 Dual Lite,也是碰到这个问题,到MMC就卡死不动了。

    刚开始我也怀疑是DDR有问题,但我把MMC的初始化给拿掉,uboot可以顺利的跑起来,如下log:

U-Boot 2017.03-imx_v2017.03_4.9.88_2.0.0_ga+gb76bb1b (Nov 12 2018 - 20:44:00 +0800)

CPU: Freescale i.MX6DL rev1.3 996 MHz (running at 792 MHz)
CPU: Extended Commercial temperature grade (-20C to 105C) at 36C
Reset cause: POR
Model: Freescale i.MX6 DualLite SABRE Smart Device Board
Board: MX6-SabreSD
DRAM: 1 GiB
KSJ: Call in Fun:initr_announce, Line350
No panel detected: default to Hannstar-XGA
Display: Hannstar-XGA (1024x768)
In: serial
Out: serial
Err: serial
No MMC device available
KSJ: Call in Fun:initr_announce, Line350
Normal Boot
env_buf [32 bytes] too small for value of "bootcmd"
Hit any key to stop autoboot: 0
=>

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Bio_TICFSL
NXP TechSupport
NXP TechSupport

Hi Wuxiunxin,

if board is based on nxp evk design I believe these settings

can be left in default state. It is necessary to run ddr test

i.MX6/7 DDR Stress Test Tool V2.90 

and change uboot/../mx6ullevk/imximage_lpddr2.cfg with new calibration

coefficients found from test.

 

Regards

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shaojunke
Contributor I

Or I should enable it in dts? Thanks.

/*
* TODO:
* Because lack of clk driver, if SDHC clk is not enabled,
* need to enable it first before this driver is invoked.
*
* we use MXC_ESDHC_CLK to get clk freq.
* If one would like to make this function work,
* the aliases should be provided in dts as this:
*
* aliases {
* mmc0 = &usdhc1;
* mmc1 = &usdhc2;
* mmc2 = &usdhc3;
* mmc3 = &usdhc4;
* };
* Then if your board only supports mmc2 and mmc3, but we can
* correctly get the seq as 2 and 3, then let mxc_get_clock
* work as expected.
*/

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shaojunke
Contributor I

Hi  Bio_TICFSL:

      I met the same issue, mmc initialized failed on imx6 dual lite board. 

      At first, I think the problem would be the ddr, but after I removed mmc initilization in code, the uboot will run up, here is the log.

      Could you help provide some advices? thanks.

U-Boot 2017.03-imx_v2017.03_4.9.88_2.0.0_ga+gb76bb1b (Nov 12 2018 - 20:44:00 +0800)

CPU: Freescale i.MX6DL rev1.3 996 MHz (running at 792 MHz)
CPU: Extended Commercial temperature grade (-20C to 105C) at 36C
Reset cause: POR
Model: Freescale i.MX6 DualLite SABRE Smart Device Board
Board: MX6-SabreSD
DRAM: 1 GiB
KSJ: Call in Fun:initr_announce, Line350
No panel detected: default to Hannstar-XGA
Display: Hannstar-XGA (1024x768)
In: serial
Out: serial
Err: serial
No MMC device available
KSJ: Call in Fun:initr_announce, Line350
Normal Boot
env_buf [32 bytes] too small for value of "bootcmd"
Hit any key to stop autoboot: 0 
=>

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