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This document describes various specifics of the '''DEV-i.MX53''' development board (100-4121-X) as far as the '''Bluetechnix MX53 Linux Board Support Package''' is concerned.

= Quick start =

Here is how to start with your core module CM-i.MX53 and your development board DEV-i.MX53.

*Plug in the core module into the development board
*Configure the DIP switches on the development board for [[#SPI NOR flash|SPI-NOR boot]]
*Connect 12..16V DC to X4
*Hold down S4 for 1 second
*Connect a monitor via HDMI (X20) or connect to the serial terminal (X14) to see the board's boot messages

= Boot modes =

The DEV-i.MX53 base board allows to configure the CM-i.MX53 module's boot mode via two DIP switches.

== SPI NOR flash ==
{|
| || width="150" | V1.0.x || || ≥V1.1.x
|-
|S2 || {{dipswitch|1|0|0|1|1|0|1|X}} || S2 || {{dipswitch|1|0|0|1|X|1|X|0}}
|-
|S1 || {{dipswitch|X|1|1|1|0|0|0|0}} || S1 || {{dipswitch|X|1|1|1|0|0|0|0}}
|-
|}

== NAND flash (CM-i.MX53-C-C-Q24S1024F4N2048) ==
{|
| || width="150" | ≥V1.0.x || || ≥V1.1.x
|-
| S2 || {{dipswitch|1|0|1|1|1|0|0|1}} || S2 || {{dipswitch|1|0|1|1|1|0|1|0}}
|-
| S1 || {{dipswitch|1|1|0|0|0|1|0|0}} || S1 || {{dipswitch|1|1|0|0|0|1|0|0}}
|-
|}

== NAND flash (CM-i.MX53-C-I-Q24S1024F4N2048) ==
{|
| || width="150" | V1.0.x || || ≥V1.1.x
|-
| || N/A || S2 || {{dipswitch|1|0|1|1|0|0|1|0}}
|-
| || N/A || S1 || {{dipswitch|1|1|0|0|0|1|0|0}}
|-
|}

== SD (Secure Digital) card ==
{|
| || width="150" | V1.0.x || || ≥V1.1.x
|-
| S2 || {{dipswitch|1|0|0|1|1|0|1|X}} || S2 || {{dipswitch|1|0|0|1|X|1|X|0}}
|-
| S1 || {{dipswitch|X|1|1|0|1|0|0|0}} || S1 || {{dipswitch|X|1|1|0|1|0|0|0}}
|-
|}

== SATA hard disk ==
Boot from SATA hard disk attached to DEV-i.MX5x (X24). Note that an i.MX53 fuse must be blown for SATA boot to work, see [[Linux Software User Manual (i.MX53 Modules)#SATA|the SW User Manual]].

{|
| || width="150" | V1.0.x || || ≥V1.1.x
|-
| S2 || {{dipswitch|X|X|X|X|1|0|X|X}} || S2 || {{dipswitch|X|X|X|X|X|X|X|0}}
|-
| S1 || {{dipswitch|X|1|0|1|0|0|0|0}} || S1 || {{dipswitch|X|1|0|1|0|0|0|0}}
|-
|}

== USB/UART boot mode ==
Boot from USB-OTG or UART1 (X15 or X14)

''NOTE: The ''mfgtool'' requires this boot mode to be set.''

{|
| || width="150" | V1.0.x || || ≥V1.1.x
|-
| S2 || {{dipswitch|X|X|X|X|1|0|X|X}} || S2 || {{dipswitch|X|X|X|X|X|X|X|0}}
|-
| S1 || {{dipswitch|X|X|X|X|X|X|1|1}} || S1 || {{dipswitch|X|X|X|X|X|X|1|1}}
|-
|}

= JTAG connector =

Some JTAG debuggers, like the PEEDI JTAG, short pins #1 and #2 (VREF and VSUPPLY) of the [https://www.jtagtest.com/pinouts/arm20 20-pin ARM JTAG header] (X9). On the DEV-i.MX5x, these pins are connected to different voltages (2V8 vs. 3V3) and MUST NOT be shortened.

;Important!
:If your JTAG device/connector shortens pins #1 and pins #2, the following switch setting must be done on DEV-i.MX53 ≥V1.1.x. It disconnects 3V3 from JTAG pin #2 (VSUPPLY).
:'''Do not connect such a JTAG device to DEV-i.MX53 V1.0.x'''.

{|
| width="250" | || || ≥V1.1.x
|-
| Disconnect 3V3 from JTAG pin #2 (VSUPPLY) || S2 || {{dipswitch|X|X|X|X|X|X|X|0}}
|-
| Connect 3V3 to VSUPPLY || S2 || {{dipswitch|X|X|X|X|X|X|X|1}}
|-
|}

= Linux kernel configuration =

There is a Linux kernel parameter for the DEV-i.MX53 base board which enables some specific features at boot time. Add this to your ''bootargs_base'' variable in U-Boot.

*Boot U-Boot
*Press any key to stop Linux kernel boot, you will get to U-Boot's prompt.
*Add the Linux kernel parameter:
CM-i.MX53 U-Boot> setenv bootargs_base $(bootargs_base) board=devimx5x
CM-i.MX53 U-Boot> printenv bootargs_base
bootargs_base=setenv bootargs console=ttymxc0,115200 hdmi di1_primary video=mxcd
i1fb:RGB24,1280x720M@60 console=tty1 board=devimx5x
CM-i.MX53 U-Boot>

If you want to make this change permanent (usually you will) also do:
CM-i.MX53 U-Boot> saveenv
This will write the environment to permanent storage.

What it does:
*Enables the WP (write protect) pin of the SD card slot
*Enables the ''poweroff'' command to switch off the PMIC
*Properly resets the USB hub on the DEV-i.MX53

[[Category:i.MX53]]

Linux BSP customization for DEV-i.MX53 - Versionsgeschichte

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