Mity CPU Platforms

09/16/2014

09:55 AM MityDSP-L138 (ARM9 Based Platforms) Software Development: RE: Adding SPI flash

The part works in SPI mode 0 or 3, but I tried all four modes (0 - 3). I also tried setting the fields .c2tdelay and... Mary Frantz

09:45 AM MityDSP-L138 (ARM9 Based Platforms) Software Development: RE: Adding SPI flash

Is the SPI mode field correct (polarity and phase, CPOL and CPHA is the part in SPI_MODE_0)?
You also look like y... Michael Williamson

09:06 AM MityDSP-L138 (ARM9 Based Platforms) Software Development: RE: Adding SPI flash

I confirmed with a scope that the chip select was not active.
I added DA850_GPIO2_15 to the the array of gpios in ... Mary Frantz

08:49 AM MitySOM-335x (ARM Cortex-A8 Based Products) PCB Development: RE: Pin mapping option for Carrier board design

This depends on at which stage you want access to the pins. Both u-boot and the kernel make changes to the pin mux. ... Jonathan Cormier

09/15/2014

04:29 PM MitySOM-335x (ARM Cortex-A8 Based Products) PCB Development: RE: Pin mapping option for Carrier board design

I see. Thank you.
And how am I be able to change them?
Zhe Zhe Ji

09/12/2014

09:19 AM MityDSP-L138 (ARM9 Based Platforms) Software Development: RE: Adding SPI flash

It would not apply (different driver, different logic handling platform arguments). Michael Williamson

09:17 AM MityDSP-L138 (ARM9 Based Platforms) Software Development: RE: Adding SPI flash

Note that if you want to use the hardware designated chip select for that spibus instead of a gpio then the SPI_INTER... Jonathan Cormier

09/11/2014

06:34 PM MitySOM-5CSX Altera Cyclone V Software Development: RE: U-Boot with large uImage containing initramfs

Hi Nicholas,
A little confused. Your build_ramdisk_image.sh appears to be building a 1 GB image for loading an SD... Michael Williamson

06:18 PM MityDSP-L138 (ARM9 Based Platforms) Software Development: RE: Adding SPI flash

Hi Mary,
Have you configured the pin-mux for the DA850_GPIO2_15, which would correspond to the chip select you are... Michael Williamson

01:20 PM MityDSP-L138 (ARM9 Based Platforms) Software Development: Adding SPI flash

We have a SPI serial flash device on our board, an M25PE80. It is connected to SPI1 with SPI1_CS1.
I created a ba... Mary Frantz

09/10/2014

04:03 PM MitySOM-5CSX Altera Cyclone V Software Development: RE: U-Boot with large uImage containing initramfs

Michael Williamson wrote:
> We've run into this issue before on a different ARM based processor.
>
> The problem ... Nicholas Crast

01:46 PM MityDSP-L138 (ARM9 Based Platforms) Software Development: RE: DSP HelloWorld Message Queue Buffer Length

Thanks for the clarification on the message handler code, and the message structure recommendation.
It definitely w... Doug Browning

11:01 AM MityDSP-L138 (ARM9 Based Platforms) Software Development: RE: DSP HelloWorld Message Queue Buffer Length

Doug,
As far as I understand the anLength is really the length of the buffer passed between the DSP and ARM and is... Jonathan Cormier

10:01 AM MityDSP-L138 (ARM9 Based Platforms) Software Development: DSP HelloWorld Message Queue Buffer Length

I'm modifying the DSP HelloWorld example code from the Wiki site to transfer data types other than strings (see SW Fo... Doug Browning

08:41 AM MitySOM-335x (ARM Cortex-A8 Based Products) PCB Development: RE: Pin mapping option for Carrier board design

Have you looked at this wiki page?
[[Pin Out]] Jonathan Cormier

09/09/2014

06:02 PM MitySOM-335x (ARM Cortex-A8 Based Products) PCB Development: Pin mapping option for Carrier board design

Hi,
I am now designing a carrier board for MitySOM335.
In the design guide, it mentions:
The I2C1 and I2C2 int... Zhe Ji

09/03/2014

01:24 PM MitySOM-5CSX Altera Cyclone V Software Development: dma_free_coherent error in Kernel driver

I am having problems DE-allocating DMA memory space. Allocation works correctly with dma_alloc_coherent. I get the fo... Julio Liriano

09/02/2014

08:33 AM MityDSP-L138 (ARM9 Based Platforms) Software Development: RE: How to probe the fpga_ctrl & fpga_gpio.ko module

Have you made any progress with this problem? Jonathan Cormier

08/29/2014

12:23 PM MitySOM-5CSX Altera Cyclone V Software Development: RE: Compiling Memory Size into U-boot

I think I see my error.
The ubootenv.bin file doesn't go into any of the three partitions generated by that automat... Julio Liriano

10:09 AM MitySOM-5CSX Altera Cyclone V Software Development: RE: Compiling Memory Size into U-boot

From that script to combine the uBoot image with the rootFS as well as the uBoot blob, I gleaned that
to write the ... Julio Liriano

08/28/2014

05:20 PM MitySOM-5CSX Altera Cyclone V Software Development: RE: Compiling Memory Size into U-boot

We actually create the environment using *mkenvimage*, which takes a text file and then store this on the SD card, wh... Daniel Vincelette

04:57 PM MitySOM-5CSX Altera Cyclone V Software Development: Compiling Memory Size into U-boot

I read this link:
https://support.criticallink.com/redmine/projects/mityarm-5cs/wiki/ARM_Software_FAQs
And I kno... Julio Liriano

04:20 PM MitySOM-5CSX Altera Cyclone V Software Development: RE: U-Boot with large uImage containing initramfs

I have attempted the following:
1.) Create .tar.gz rootfs with yocto
2.) Create ext3 ramdisk image of rootfs
3.)... Nicholas Crast

12:42 PM MitySOM-5CSX Altera Cyclone V Software Development: RE: U-Boot with large uImage containing initramfs

Michael Williamson wrote:
> We've run into this issue before on a different ARM based processor.
>
> The problem ... Nicholas Crast

07:55 AM MitySOM-5CSX Altera Cyclone V Software Development: RE: U-Boot with large uImage containing initramfs

We've run into this issue before on a different ARM based processor.
The problem is the linker for the kernel is p... Michael Williamson

12:37 PM MitySOM-5CSX Altera Cyclone V Software Development: RE: Memory Aligned Byte Array

Mike,
I will definitely need more than a single 4096 byte page. I can
call __get_free_pages() to allocate a con... Julio Liriano

11:42 AM MitySOM-5CSX Altera Cyclone V Software Development: RE: Memory Aligned Byte Array

Any kernel memory allocation is going to be page aligned (4K), it has to be. That's how the linux kernel memory mana... Michael Williamson

11:19 AM MitySOM-5CSX Altera Cyclone V Software Development: RE: Memory Aligned Byte Array

Mike,
I'm writing a device driver to handle this DMA setup. I want the kernel to give me a chunk of physical memo... Julio Liriano

07:09 AM MitySOM-5CSX Altera Cyclone V Software Development: RE: Memory Aligned Byte Array

Not entirely sure what you are up to here.
Is your linux application running in user space? If it is, you may nee... Michael Williamson

08/27/2014

02:11 PM MitySOM-5CSX Altera Cyclone V Software Development: U-Boot with large uImage containing initramfs

Hi,
I am trying to boot from a uImage containing an initramfs with the mitySOM-5csx devkit. When I use the core-im... Nicholas Crast

08/26/2014

03:16 PM MitySOM-5CSX Altera Cyclone V Software Development: Memory Aligned Byte Array

Posted on behalf of a customer:
I have a byte array in my Linux application into which I want my DMA firmware to w... Alexander Block

08/19/2014

11:31 AM MityDSP-L138 (ARM9 Based Platforms) Software Development: RE: How to probe the fpga_ctrl & fpga_gpio.ko module

yes,
echo "146" > /sys/class/gpio/export --> sh: write error: Invalid argument
it may be that fpga_gpio... HYUNG KI KIM

08:50 AM MityDSP-L138 (ARM9 Based Platforms) Software Development: RE: How to probe the fpga_ctrl & fpga_gpio.ko module

Did you mean ... Jonathan Cormier

08:26 AM MityDSP-L138 (ARM9 Based Platforms) Software Development: RE: How to probe the fpga_ctrl & fpga_gpio.ko module

HYUNG KI KIM wrote:
> I'm tryint to control FPGA of GPIO on the linux driver side with MityL138-DSP(L138-FI-236-RL)... HYUNG KI KIM

08:24 AM MityDSP-L138 (ARM9 Based Platforms) Software Development: RE: How to probe the fpga_ctrl & fpga_gpio.ko module

HYUNG KI KIM wrote:
> I'm tryint to control FPGA of GPIO on the linux driver side with MityL138-DSP(L138-FI-236-RL)... HYUNG KI KIM

08:23 AM MityDSP-L138 (ARM9 Based Platforms) Software Development: How to probe the fpga_ctrl & fpga_gpio.ko module

I'm tryint to control FPGA of GPIO on the linux driver side with MityL138-DSP(L138-FI-236-RL) mdule.
and, loading t... HYUNG KI KIM

08/18/2014

04:31 PM MityDSP-L138 (ARM9 Based Platforms) PCB Development: RE: Protecting MityDSP module during development

Hi Udi,
Yes the FPGA I/Os can be damaged by sinking too much current - powered or off. The I/Os have protection d... Adam Dziedzic

03:39 PM MityDSP-L138 (ARM9 Based Platforms) PCB Development: Protecting MityDSP module during development

We just fried a MityDSP L138F module, and I'm not sure why. I'm suspecting that the problem was that we had an ADC mo... Udi Fuchs