Mity CPU Platforms » MitySOM-335x (ARM Cortex-A8 Based Products)

03/16/2020

03:58 PM Software Development: RE: GPIO toggling/chattering while performing NAND read.

Note the pinmux tables can be read from memory.
See "Table 9-10: CONTROL_MODULE REGISTERS" https://support.critic... Jonathan Cormier

03:35 PM Software Development: RE: GPIO toggling/chattering while performing NAND read.

Hi,
Thank you for your input.
Tried with below command, still same problem.
mw.w 0x50000078 48
As mentione... Srinivasa Wunnimani

02:09 PM Software Development: RE: GPIO toggling/chattering while performing NAND read.

> md.b 0x50000070 10
> mw.b 0x50000078 48
> mw.b 0x50000079 00
I would stick with using md.w and mw.w since all ... Jonathan Cormier

03/14/2020

11:52 AM Software Development: RE: GPIO toggling/chattering while performing NAND read.

Sorry for typo error:
I was able to manual write it to GPMC *without* any error.
Regards
Srinivasa Srinivasa Wunnimani

08:47 AM Software Development: RE: GPIO toggling/chattering while performing NAND read.

Hi,
I tried to change GPMC_CONFIG7_0 to 0x48 from 0xf48 as below. I was able to manual write it to GPMC with any ... Srinivasa Wunnimani

03/11/2020

01:41 PM Software Development: RE: GPIO toggling/chattering while performing NAND read.

You can use md to read memory locations and mw to write them. https://www.denx.de/wiki/publish/DULG/to-delete/UBootCm... Jonathan Cormier

11:13 AM Software Development: RE: GPIO toggling/chattering while performing NAND read.

Hi,
Manually means, do you want me to change GPMC_CONFIG7_0 at u-boot prompt?
Regards
Srinivasa Srinivasa Wunnimani

10:45 AM Software Development: RE: GPIO toggling/chattering while performing NAND read.

Hi,
With u-boot V2013 frequency of pulses @ ~3.571 MHz and amplitude ~150 mV.
With u-boot V2018 frequency of puls... Srinivasa Wunnimani

03/09/2020

03:02 PM Software Development: RE: GPIO toggling/chattering while performing NAND read.

If you manually set GPMC_CONFIG7_0 back to 48, does the activity on GPIO 0_27 stop?
Jonathan Cormier

02:27 PM Software Development: RE: GPIO toggling/chattering while performing NAND read.

Srinivasa,
We have not seen this before and I am reviewing your comments and logs.
Diff of GPMC registers... Bob Duke

01:23 PM Software Development: RE: GPIO toggling/chattering while performing NAND read.

Hi,
I have dumped the values of GPMC registers for u-boot V2013.10 and V2018 at u-boot prompt. Please find the fi... Srinivasa Wunnimani

03/06/2020

12:08 PM Software Development: RE: GPIO toggling/chattering while performing NAND read.

Hi,
Test case 1:
Tested on u-boot Version 2013.10 from mitysom (u-boot-mityarm-335x-6c6a700.tar.gz).
Probed GPIO... Srinivasa Wunnimani

07:25 AM Software Development: GPIO toggling/chattering while performing NAND read.

Hi,
We have mitySOM board in our product and we are using u-boot-mityarm-335x.tar.gz and building u-boot as below:... Srinivasa Wunnimani

02/18/2020

02:37 PM Software Development: RE: Reading contents of a file in Uboot

u-boot doesn't really have a lot of file io ability.
You can load a file from sd card, tftp, nfs, or nand into m... Jonathan Cormier

11:01 AM Software Development: Reading contents of a file in Uboot

Hi ,
How can i read or cat contents of file from uboot.
Regards,
manjunath Manjunath K S