topic Re: i.MX6_Boot Mode setting in i.MX Processors

i.MX6_Boot Mode setting

jackyc_wu — Mon, 07 Aug 2017 01:25:12 GMT

Hi,
I have some board bring up issue, Need help for setting Boot Config.
The MPU is i.MX6ull, chosen SD card and eMMC for my boot device ,Reference document :IMX6ULLRM Rev. 0, 09/2016

Issue as below :

RM Section 5 -
SD/eSD Boot Fusemap (Table 5-5)
1. BOOT_CFG1 [0] : What is SD Loopback Clock Source Sel ? through SD pad and direct means ?
2. BOOT_CFG1 [1] : Is SD POWER Cycle Enable means that if i had RST pin with my boot deviece, choose -> Enabled via USDHC_RST pad ? if not, choose No power cycle?
3. BOOT_CFG1 [3:2] : How to choose ? any suggestion ?
4. BOOT_CFG1 [4] : Is SDR25 SDR50 SDR104 -> Fast Boot? if not, why?
5. BOOT_CFG2 [7:6] : What is SD Calibration Step means, and how to setting ?

MMC/eMMC Boot Fusemap (Table 5-6)
6. BOOT_CFG1[0] : Same problem as the 1st point
7. BOOT_CFG1[1] : Same problem as the 2nd point
8. BOOT_CFG1[3:2] : What is Fast Boot Acknowledge Disable setting depends and its meaning ?
What version of eMMC will it be high speed mode or Regular?

Please help, and extremely grateful!
Best regards,

Jacky.

Re: i.MX6_Boot Mode setting

Rita_Wang — Wed, 09 Aug 2017 07:14:54 GMT

Hi Jack,

About the boot mode settting you can refer to the i.MX6ULL schematic boot up design. You can directly refer to it. And in your case you created our engineer have give reply to you, please have a check.
Have a great day,
Rita

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Re: i.MX6_Boot Mode setting

Yuri — Wed, 16 Aug 2017 05:40:49 GMT

Hello,

You may create request to get boot utility to review boot log.

Regards,

Yuri.