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

05/07/2012

12:01 PM PCB Development: RE: Power Management w/ MityARM

Mike,
Thanks for your response, it is really helpful to know how the PMIC is connected. I posted a question about... Ali Asgar Sohanghpurwala

11:06 AM PCB Development: RE: Reg. JTAG Reset and SD Card connection

Hi Salam,
Thanks for the comments.
1. There is a 10K pull down on the JTAG Reset line so that the JTAG interfac... Michael Williamson

09:55 AM PCB Development: Reg. JTAG Reset and SD Card connection

Hi,
As per the Mity carrier board design
1, the NRST of JTAG connector is permanently low,that means it is always... ABDUL SALAM

05/04/2012

03:50 PM Software Development: RE: Usage of I2C1 to connect external peripheral

Hi Mike,
Thanks for the information.
I will check on the details provided by you.
Regards,
Raja. Raja Vankam

03:37 PM Software Development: RE: Usage of I2C1 to connect external peripheral

Can you post your source code for the I2CTest (including the value of addr) and provide a specification to the device... Michael Williamson

03:18 PM Software Development: RE: Usage of I2C1 to connect external peripheral

Hi Mike,
Thanks for your response.
I am using I2C1 and using from application as /dev/i2C-2. This change of pin... Raja Vankam

05/03/2012

04:22 PM Software Development: RE: Usage of I2C1 to connect external peripheral

Hi Raja,
Can you please post the full command lines for your output?
There are actually 3 I2C buses in play.
... Michael Williamson

03:55 PM Software Development: RE: Usage of I2C1 to connect external peripheral

Hi Tim,
Thanks for the reply.
Even my understanding is almost similar. But earlier I have tried with out connec... Raja Vankam

01:34 PM Software Development: RE: Usage of I2C1 to connect external peripheral

Raja
You can use the i2c utilties to test the bus. The output below is from scanning both I2C buses.
@root@mityarm-... Tim Iskander

12:00 PM Software Development: RE: Usage of I2C1 to connect external peripheral

Hi Tim,
Gentle reminder about the above response.
Could you please let me know how to go ahead.
Regards,
Raja. Raja Vankam

05/02/2012

02:52 PM Software Development: RE: Usage of I2C1 to connect external peripheral

Hi Tim,
In Mity arm board I2C1 is configured on mii1_crs. pin and in Am335x based board same I2c1 is on spi0_d1 pi... Raja Vankam

02:37 PM Software Development: RE: Usage of I2C1 to connect external peripheral

Raja
The EREMOTEIO error comes from drivers/i2c/busses/i2c-omap.c and is because there is no Ack from
bus request.
... Tim Iskander

02:35 PM Software Development: RE: Usage of I2C1 to connect external peripheral

Sorry i missed to mention file name details.
filename = /dev/i2c-2. Raja Vankam

02:27 PM Software Development: RE: Usage of I2C1 to connect external peripheral

Hi,
Code i have used to access is mentioned below:
fd = open(filename, O_RDWR);
ioctl(fd, I2C_SLAVE, addr);
... Raja Vankam

10:05 AM Software Development: Usage of I2C1 to connect external peripheral

Hi,
I am trying to use the I2C1 to communicate to the slave.
To probe the signals on Mity board, i am planning ... Raja Vankam

04/30/2012

07:48 AM PCB Development: RE: Power Management w/ MityARM

Hi Ali,
Sorry for the delay in response, you have a lot of questions wrapped up in these two posts, and we haven't... Michael Williamson

04/27/2012

11:57 AM PCB Development: RE: Power Management w/ MityARM

Sure enough after posting this I found the User's Guide for using TPS65910 with AM335x:
http://www.ti.com/lit/pdf/sw... Ali Asgar Sohanghpurwala

04/26/2012

06:08 PM Software Development: RE: PIN mux details and modifications

I have tested these pins too
can_pin_mux[] = {
{"uart1_rxd.gpio0_14", AM33XX_PIN_OUTPUT},
{"uart1_txd.gpio0_15... Raja Vankam

05:46 PM Software Development: RE: PIN mux details and modifications

Hi.
In your log file, you show modification of gpio 100.
The gpio offset on the linux command line needs to be ... Michael Williamson

05:29 PM Software Development: RE: PIN mux details and modifications

Hi,
But i have changed the can_pin_mux and LCD_Data0 pins aswell. but even those are also not working. I have atta... Raja Vankam

05:21 PM Software Development: RE: PIN mux details and modifications

Hi. OK.
From your log file, there is an error:
[ 0.079700] _omap_mux_get_by_name: Could not find signal lcd... Michael Williamson

04:36 PM Software Development: RE: PIN mux details and modifications

Log file. Raja Vankam

04:25 PM Software Development: RE: PIN mux details and modifications

Hi Raja,
Can you also post your boot up text (dmesg)? I just want to check for any boot / pinmux error messages i... Michael Williamson

04:08 PM Software Development: RE: PIN mux details and modifications

Attached the baseboard file for your refence.
Wanted to configure LCD_DATA pin to be configured as GPIO.
Thanks. Raja Vankam

03:49 PM Software Development: RE: PIN mux details and modifications

Not yet (kind of bandwidth constrained, sorry).
You might try posting to the E2E site on TI's support site:
... Michael Williamson

03:44 PM Software Development: RE: PIN mux details and modifications

Hi,
Do you have any updates for me regarding my approach on pinmux?
Thanks. Raja Vankam

04:21 PM PCB Development: Power Management w/ MityARM

Hey,
We're trying to figure out how to utilized MityARM's power management capabilities in our design and this is ... Ali Asgar Sohanghpurwala

04/25/2012

01:27 PM Software Development: RE: PIN mux details and modifications

Hi,
Thanks for your quick response.
I have tried the same by configuring LCD_data0 pin to GPIO. as lcd_data11.g... Raja Vankam

01:08 PM Software Development: RE: PIN mux details and modifications

Hi,
So there are 3 steps to configuring a GPIO.
1) modify the baseboard file and ensure your issuing a pin mux ... Michael Williamson

12:57 PM Software Development: RE: PIN mux details and modifications

Hi Mike,
To change the mux details i have defined the basic pin details to GPIO and added GPIO pin details to mux3... Raja Vankam

04/23/2012

04:40 PM Software Development: RE: PIN mux details and modifications

Hi Mike,
Thanks for the information.
what are all the modifications we have to do if our board doesnot have any... Raja Vankam

04/20/2012

10:44 AM Software Development: RE: Test application for drivers

For a linux system, GPIOs can be driven using sysfs via command line to modify the pins via the "gpiolib":http://www.... Michael Williamson

10:24 AM Software Development: Test application for drivers

Hi,
Do you have any test application to test the drivers such as GPIO and UART? Could you please share them?
Re... Raja Vankam

10:38 AM Software Development: RE: PIN mux details and modifications

Are you using linux as your target OS? If you, you will need to update the pinmux settings in your baseboard-XXXX.c ... Michael Williamson

10:22 AM Software Development: PIN mux details and modifications

Hi,
I have to use more GPIOs in our design. I am thinking of using the pins assigned for CAN0 and CAN1 in Mityarm ... Raja Vankam

04/19/2012

03:50 PM Software Development: RE: Is RMII possible with the MityARM-3359?

Yes,
It should be supported if you configure the pinmux accordingly. You will need to modify u-Boot in order to ... Michael Williamson

03:22 PM Software Development: Is RMII possible with the MityARM-3359?

(posted on behalf of a customer)
Is RMII possible with the MityARM-3359? I didn’t see some on the alternate funct... Thomas Catalino

03:31 PM Software Development: RE: Is there a linux driver for RMII or just RGMII for the MityARM-3359

We've only tried to use the RGMII port here. I'm fairly certain that RMII is supported, but you should contact TI on... Michael Williamson

03:24 PM Software Development: Is there a linux driver for RMII or just RGMII for the MityARM-3359

Is there a linux driver for RMII or just RGMII? Thomas Catalino

02:54 PM PCB Development: RE: ADC reference voltage data required

salam
The TI datasheet for the AM3359 [ http://www.ti.com/lit/ds/symlink/am3359.pdf ] recommends 1.8V for the ADC ci... Tim Iskander

01:18 PM PCB Development: ADC reference voltage data required

Hi,
`A 3.3 V and 1.8 V are connected to the ADC reference voltage in your carrier board reference design, Can i con... ABDUL SALAM

04/18/2012

02:37 PM PCB Development: RE: Is a separate I2C EEPROM needed to ID our Carrier board?

Yes,
You should be defining your own baseboard-***.c file if you are making a custom board using the baseboard-mit... Michael Williamson

11:46 AM PCB Development: RE: Is a separate I2C EEPROM needed to ID our Carrier board?

Hey Mike, that helps a lot. One reason I was asking about the EEPROM because we plan to cable a 24-bit LCD/touchscre... Ali Asgar Sohanghpurwala

08:06 AM PCB Development: RE: Is a separate I2C EEPROM needed to ID our Carrier board?

Hi.
The TI SDK works with the MityARM-3359, but you need to replace "u-Boot":http://support.criticallink.com/redmi... Michael Williamson

12:00 PM PCB Development: RE: SPI1 pin conflict:

Michael Williamson wrote:
> The MityARM-335x module provides SPI1 SCLK, D0 and D1 on pins 193, 195, and 197 of the e... Ali Asgar Sohanghpurwala

08:19 AM PCB Development: RE: SPI1 pin conflict:

The MityARM-335x module provides SPI1 SCLK, D0 and D1 on pins 193, 195, and 197 of the edge connector.
On the modu... Michael Williamson

04/17/2012

10:04 PM PCB Development: Is a separate I2C EEPROM needed to ID our Carrier board?

(posted on behalf of a customer)
All the other AM3359 boards have this (ULCD, TI EVM, BeagleBone, etc.) and it loo... Thomas Catalino

10:01 PM PCB Development: SPI1 pin conflict:

(posted on behalf of a customer)
MityDSP has dedicated pins 193, 195 and 197 to SPI1 because they connected it to ... Thomas Catalino

04/16/2012

02:42 PM PCB Development: RE: Reg. ADC reference voltage

a gentle reminder for the below question
regards
salam ABDUL SALAM

04/15/2012

12:47 PM PCB Development: RE: Specification TPS power sully design inthe AM3359 carrier board

Hi Salam,
If you are asking if you can use our reference DevKit 3.3V supply design to power other 3.3V devices, th... Michael Williamson

04/13/2012

03:23 PM Software Development: RE: Problem in building of kernel and booting

Hi Mike,
Thankyou very much. That worked...
But the only difference is the kernal iamge name provided default i... Raja Vankam

02:48 PM PCB Development: RE: Specification TPS power sully design inthe AM3359 carrier board

gentile reminder for the above question ABDUL SALAM

02:48 PM PCB Development: RE: Specification TPS power sully design inthe AM3359 carrier board

gentile reminder for the above question ABDUL SALAM

04/12/2012

05:54 PM Software Development: RE: Problem in building of kernel and booting

Hi,
In order to build the kernel image, you need to checkout the "mityarm335x_wip" branch. It is not the default ... Michael Williamson

03:24 PM Software Development: Problem in building of kernel and booting

Hi,
I tried to recompile the kernel provided and booting the same on MityARM 335x development board.
I have f... Raja Vankam

04/11/2012

12:16 PM PCB Development: RE: Regarding I2C interface

Hi Raja,
I've used 2 Mosfet's for level translation in the past. cheaper and works well, plus no obsolescence issu... Alexei Shkurko

10:21 AM PCB Development: RE: Regarding I2C interface

Hi Alexei,
Could you please suggest an IC for this application.
Regards,
Raja. Raja Vankam

10:04 AM PCB Development: RE: Regarding I2C interface

Hi Raja,
you have to use 5V to 3.3V I2C level shifter to interface with AM3359, it is not 5V tolerant part
th... Alexei Shkurko

09:57 AM PCB Development: Reg. ADC reference voltage

Hi,
`A 3.3 V and 1.8 V are connected to the ADC reference voltage in your carrier board reference design, Can i co... ABDUL SALAM

04/10/2012

05:23 PM PCB Development: RE: Specification TPS power sully design inthe AM3359 carrier board

Hi alexi,
as per your Carrier board design guidline,the Typical input voltage of the SOM module is 5v, so we are pl... ABDUL SALAM

11:32 AM PCB Development: RE: Specification TPS power sully design inthe AM3359 carrier board

Hi Salam,
the SOM module requires 3.3V input voltage with up to 1Amp input current, our Dev Kit board based on TPS... Alexei Shkurko

04:57 PM PCB Development: Regarding I2C interface

We need to interface Power line Communication through I2C to AM3359.
Device communication output voltage specifica... Raja Vankam

04/09/2012

04:07 PM PCB Development: RE: Reg. Vin-input power supply to the Microcontroller connector.

That circuit is not required for your design. It is a current measuring circuit in order to allow someone to measure... Michael Williamson

04:04 PM PCB Development: Reg. Vin-input power supply to the Microcontroller connector.

Hi,
we are plnning to generate a 5v input supply (5v,0.75 A) , that will be connected to the to the microcontrolle... ABDUL SALAM

03:04 PM PCB Development: Specification TPS power sully design inthe AM3359 carrier board

HI,
Could you please send me the Specification TPS power sully design inthe "AM3359":http://www.mitydsp.com/mityarm-... ABDUL SALAM