About JCarl.1

JCarl.1 · 2020-10-11

I'm trying to boot an STM32MP157 using the v5.4-stm32mp branch of ST's Linux kernel, and it doesn't appear that peripherals under the simple-bus node in the DTS file are getting probed. I copied the stm32mp157d-dk1.dts file as a starting point, but s...

JCarl.1 · 2020-08-15

I'm bringing up a custom STM32MP15x-based design, and I'm encountering what looks like stack corruption issues in U-Boot (and I can't get a kernel to boot).Symptoms:I've enabled early debug printing, and get the following output:U-Boot SPL 2020.04-st...

JCarl.1 · 2020-05-29

I'm running the STM32MP157A-DK Discovery board through HyperLynx and I'm getting some pretty horrible ringing on the address lines, along with timing violations when I use the DDRx Batch Simulation, and I'd like to verify my setup is good.First, I ex...

JCarl.1 · 2020-09-14

@SMich.1, as I said, I'm not using a PMIC — just 3.3V and 1.35V regulators.By the way, I ended up solving the problem! I had swapped DQM0 and DQM1 (ugh). Since 90% of U-Boot uses 32-bit accesses, it actually kind-of-sort-of worked, but it would glit...

JCarl.1 · 2020-08-26

Honestly, I'm just using whichever versions of U-Boot / Linux that are currently in Buildroot. I forgot to mention that this SD card boots fine on a DK1 board, so it's definitely a hardware issue. Thanks for the help anyway, though.

JCarl.1 · 2020-08-20

Activating and configuring components on the A7 side will trigger STM32CubeIDE to generate DTS code that configures the peripherals accordingly, just like on any other embedded Linux system running on an Arm chip. The Linux kernel modules for each pe...

JCarl.1 · 2020-08-19

STM32CubeIDE is just a modified version of Eclipse designed specifically for microcontroller development. There's no reason you can't launch multiple debug sessions concurrently, each connecting to a different GDB server under the hood, which would c...

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STM32MP157D DTS v2 simple-bus node not enabling? No UART, MMC, or any other peripherals getting initialized

Glitchy U-Boot behavior with custom STM32MP157D-based design

Horrible signal reflections and timing violations in DDR3L HyperLynx simulation of the STM32MP157 Discovery

Re: Glitchy U-Boot behavior with custom STM32MP157D-based design

Re: Glitchy U-Boot behavior with custom STM32MP157D-based design

Re: Hello, I have a question regarding ST marketing on the STM32MP1 devices. According to the page, it states "STM32MP1 users can now choose from several IDEs from leading vendors and enjoy free license"

Re: Hello, I have a question regarding ST marketing on the STM32MP1 devices. According to the page, it states "STM32MP1 users can now choose from several IDEs from leading vendors and enjoy free license"