Activity
From 03/22/2020 to 04/20/2020
04/08/2020
- JC 08:27 PM Software Development: RE: GPIO toggling/chattering while performing NAND read.
- Srinivasa Wunnimani wrote:
> Hi,
> ...
What is your boot config for SD card boot and NAND boot? It would be the pull-up and pull-downs on the LCD_DATA0-11 pins. - JC 07:40 PM Software Development: RE: GPIO toggling/chattering while performing NAND read.
- Srinivasa Wunnimani wrote:
> I want to test the same with pre-built binaries for u-boot V2018.01.
> ...
Hmm just checked an looks like we haven't released the 2019 MDK which has u-boot 2018 yet. So we don't have any prebuilt binaries ... - SW 03:04 PM Software Development: RE: GPIO toggling/chattering while performing NAND read.
- Hi,
I understand your point.
Please find the log attached for SD boot and NAND boot attached.
I am trying to explain with respect to line numbers in log file "u-boot_debug_with_SD_boot_and_NAND_boot.txt"
Line 1 to 97 is SD Boot... - JC 01:06 PM Software Development: RE: GPIO toggling/chattering while performing NAND read.
- huh is your sd card MLO and u-boot.img the same one you are programming into nand?
04/07/2020
- SW 03:33 PM Software Development: RE: GPIO toggling/chattering while performing NAND read.
- Is boot from nand a requirement to reproduce this?
> Yes. GPIO 0_27 (Relay chattering) happens only during NAND boot or any NAND operations.
I would expect it to behave the same when booted from SD card and reading from the NAND u...
04/06/2020
- JC 07:58 PM Software Development: RE: GPIO toggling/chattering while performing NAND read.
- Thanks for the instructions to reproduce the problem. That is helpful.
Unfortunately though with the current virus going around, I don't have access to an oscilloscope to check the gpio pin for noise.
Question:
Is boot from na...
03/31/2020
- SW 12:16 PM Software Development: RE: GPIO toggling/chattering while performing NAND read.
- Hi,
We have SOM board as per below link:
https://static6.arrow.com/aropdfconversion/bd95376e672d11c623e62dac62cb587c9bb1bc34/mitysom-335x-criticallink.pdf
If you have any evaluation board for the above mentioned SOM board, pleas...
03/30/2020
- JC 05:46 PM Software Development: RE: GPIO toggling/chattering while performing NAND read.
- Srinivasa Wunnimani wrote:
> *> Now my suspect is on below registers*
> ...
In order to find these registers, all I do is run "grep -iR " with the string I'm looking for in the u-boot source directory. Sometimes may need to poke aroun... - JC 05:41 PM Software Development: RE: GPIO toggling/chattering while performing NAND read.
- Srinivasa Wunnimani wrote:
> Hi,
> ...
Okay looks like the pinmux's match
03/28/2020
- SW 02:01 PM Software Development: RE: GPIO toggling/chattering while performing NAND read.
- Forget to attach log files.
Please find log files attached.
Regards
Srinivasa - SW 02:00 PM Software Development: RE: GPIO toggling/chattering while performing NAND read.
Hi
> If things are crashing now, then this was probably not the correct change.
I have started debugging into gpmc_init() in u-boot 2013.10 Vs u-boot 2018.01.
Old u-boot 2013.10 in file “arch/arm/cpu/armv7/am33xx/mem.c”- SW 01:12 PM Software Development: RE: GPIO toggling/chattering while performing NAND read.
- Hi,
I am little confused on sysconfig pin mux registers. Did you mean control module registers?
Anyways, I have captured control module register values for v2013.10 to our new u-boot v2018.01.
Please find logs attached.
Regards
...
03/27/2020
- JC 01:25 PM Software Development: RE: GPIO toggling/chattering while performing NAND read.
- > To make sure pinmux is okay, copied board/cl/mityarm335x/mux.c from v2013.10 to our new u-boot v2018.01. Please find mux.c attached.
I was hoping to have you dump the sysconfig pin mux registers for the 2013 and 2019 u-boots to make... - SW 07:55 AM Software Development: RE: GPIO toggling/chattering while performing NAND read.
- Hi,
If things are crashing now, then this was probably not the correct change. If you double check the config7 register, did this change set it to the value we expect from v2013.10?
> In the entire u-boot the only C file (arch/arm/...
03/25/2020
- JC 01:09 PM Software Development: RE: GPIO toggling/chattering while performing NAND read.
- Srinivasa Wunnimani wrote:
> Hi,
> ...
If things are crashing now, then this was probably not the correct change. If you double check the config7 register, did this change set it to the value we expect from v2013.10?
> Sure, we wil... - SW 09:09 AM Software Development: RE: GPIO toggling/chattering while performing NAND read.
- Hi,
I have updated arch/arm/mach-omap2/mem-common.c as below:
132 #if defined(CONFIG_NAND) || defined(CONFIG_CMD_NAND)
133 case MTD_DEV_TYPE_NAND:
134 gpmc_regs = gpmc_regs_nand;
135 base ...