Follow the steps below to disable the log output from U-Boot and TF-A. 1. Open the necessary U-Boot configurations by running the following command # make uboot-menuconfig Console ---> [ ] Console recording [*] Add functionality to disable console completely () Board specific string to be added to u...

In specific circumstances, it may be necessary to fine-tune the core power of the chip if the VDD_Core falls short of 1.25V. It's important to note that the suitability of this method depends on the power IC integrated into the board. Please refer to the power IC's specifications, as it may not supp...

If you use a larger-sized touch screen, you may notice that the touch position is less accurate due to the higher resistance of larger resistive touch screens. To address this issue, it's necessary to reduce the ADC clock speed, allowing the ADC voltage sufficient time to charge. Change the ADC0 clo...

Please refer to “Interworking of MA35D1 RTP and Linux”. https://www.nuvoton.com/products/microprocessors/arm-cortex-a35-mpus/ma35d1-high-performance-edge-iiot-series/?group=Document&rt=Application%20Note&tab=2 The application note teaches you how to load ELF to RTP and RTP binary ELF file are genera...

When modifying the display pixel clock, it's essential to adjust the VPLL accordingly. Please take note of this. Some display modules may require a pixel clock that is higher or lower than our VPLL, so it's important to be aware of our VPLL limitations. VPLL Limitation 85.7 MHz < VPLL < 2400 MHz VPL...

The default booting sources for the MA35 series are primarily eMMC/SD. If you've already built an image but wish to change this configuration, you'll need to clean the arm-trusted-firmware, U-Boot, and rebuild them again. Here are the steps: 1. Change the booting source to your preference: # make me...

Most users need to select a suitable flash with sufficient capacity. To assist with this, we've compiled a list of image sizes generated by Buildroot/Yocto/OpenWrt. Please note that this list is for reference only, as the actual size may vary depending on the packages installed. The size of eMMC/SD ...

In certain situations where you need to write an image to MA35D1 in a Linux environment within VMware, you may encounter an issue where NuWriter cannot detect the device. NuWriter can be downloaded from https://github.com/OpenNuvoton/MA35D1_NuWriter To resolve this, first, check if MA35's USB device...

This FAQ explains how to utilize the DDR parameter file to generate a Linux image. After using the DDR parameter Excel file provided by Nuvoton, place the file "custom_ddr.h" into a specific folder depending on the Linux production tool you are using. Buildroot: Replace the custom_ddr.h in “ddr” fol...

Default NAND Flash rootfs is 100MB and part of space is occupied by UBIFS, so it may not be enough. This FAQ would guide you how to extend the rootfs size. Please verify the "maximum logical eraseblock count" in Buildroot menuconfig. The default value is 2800, which corresponds to a maximum rootfs s...