Embedded module TQMLS102xA - PTXdist Linux BSP documentation
BSP Rev.0106 add second QSPI NOR chip
In BSP Rev.0106 the second QSPI NOR chip has been removed from the default BSP configuration.
If a second device is placed on the TQMLS102xA module please apply the following changes in the
devicetree source file ls1021a-tqmls1021a.dtsi.
&qspi {
+ fsl,qspi-has-second-chip;
status = "okay";
qflash0: mt25ql512@0 {
@@ -139,12 +138,4 @@
};
};
};
+ qflash1: mt25ql512@1 {
+ compatible = "micron,n25q512ax3", "cfi-flash";
+ #address-cells = <1>;
+ #size-cells = <1>;
+ spi-max-frequency = <20000000>;
+ reg = <1>;
+ };
};
Use BSP Rev.0100 on MBLS102xA Rev.01xx
BSP Rev.0100 was designed to be run on Rev.0200 of the MBLS012xA.
On Rev.0200 of the MBLS102xA a different package type of the ethernet PHY is used than on Rev.01xx.
This results in different PHY addresses:
| Connector | Controller | MBLS102xA Rev.01xx | MBLS102xA Rev.02xx |
|---|---|---|---|
| X12 | EC1 | 0x0D | 0x0C |
| X13 | EC2 | 0x13 | 0x03 |
| X11 | EC3 | 0x05 | 0x04 |
In order to use BSP Rev.0100 on MBLS102xA Rev.01xx the following patches must not be applied:
- U-Boot
- 0010-tqmls102xa-set-phy-addresses-for-mbls1021a.0200.patch
- 0011-phy_ti-adapt-hard-coded-skew-to-custom-values.patch
- Linux
- 0110-arm-dt-mbls102xa-set-phy-addresses-for-rev.0200.patch
- 0111-dt-mbls102xa-adapt-phy-timing-to-rev0200.patch
To “disable” these patches, simply comment them out in the corresponding series file:
Please note that the following interfaces cannot be used when using Rev.01xx of the MBLS102xA:
- EC2
- SATA
Use BSP Rev.0100 on MBLS102xA Rev.01xx
BSP Rev.0100 was designed to be run on Rev.0200 of the MBLS012xA.
On Rev.0200 of the MBLS102xA a different package type of the ethernet PHY is used than on Rev.01xx.
This results in different PHY addresses:
| Connector | Controller | MBLS102xA Rev.01xx | MBLS102xA Rev.02xx |
|---|---|---|---|
| X12 | EC1 | 0x0D | 0x0C |
| X13 | EC2 | 0x13 | 0x03 |
| X11 | EC3 | 0x05 | 0x04 |
In order to use BSP Rev.0100 on MBLS102xA Rev.01xx the following patches must not be applied:
- U-Boot
- 0010-tqmls102xa-set-phy-addresses-for-mbls1021a.0200.patch
- 0011-phy_ti-adapt-hard-coded-skew-to-custom-values.patch
- Linux
- 0110-arm-dt-mbls102xa-set-phy-addresses-for-rev.0200.patch
- 0111-dt-mbls102xa-adapt-phy-timing-to-rev0200.patch
To “disable” these patches, simply comment them out in the corresponding series file:
- EC2
- SATA
Load / Change / Save the Device Tree under U-Boot
Devicetree can be edit with the fdt commands under U-Boot.
Therefore you can have a look at the following tutorial.
1) At first the fdt file has to be loaded from the current boot medium (mmc) into RAM.
=> run loadfdt
2) Next step is to set the predefined U-Boot environment variable fdt_addr through the fdt addr command.
=> fdt addr $fdt_addr
3) Afterwards the size of the fdt has to be increased (to the next 4K divider) in order to have some space for modifications. This is simply done by entering:
=> fdt resize
4) List device in the tree you want to change to have a look at the default settings.
5) To modify a value of a propertie use the fdt set command.
=> fdt set <path> <property> <value>
6) Optional: If you want to save your modified Devicetree back to mmc you'll have to run the following command:
=> mmc dev $mmcdev; mmc write $fdt_addr $fdt_start $fdt_size
* BSP Rev. >0102 <code>⇒ fatwrite mmc $mmcdev:$firmwarepart $fdt_addr $fdt_file <totalsize></code> You can find out <totalsize> of the modified fdt by entering the command fdt header Otherwise you can boot your module with the changed Devicetree right after the modification.