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From 11/14/2010 to 12/13/2010

12/13/2010

05:13 PM Software Development: u-boot build question
I have downloaded the u-boot snapshot. Can someone tell me the build command sequence in order to support the MityDS... david kasper

12/10/2010

07:41 AM Software Development: RE: I2C Board Support Package
I'm not sure if that's true. The I2C lines are required in order to manage the on-board power controller needed for ... Michael Williamson

12/09/2010

07:40 PM Software Development: RE: I2C Board Support Package
I'm trying to dig through the two kernels to see what the difference is w.r.t the i2c bus. It looks like the 2010.05 ... Dennis Volper
05:33 PM Software Development: RE: Basic Driver Virtual Addressing Question
You might want to check the fpga_ctrl.c file for an example, or check the online manual for "Linux Device Drivers":ht... Michael Williamson
04:39 PM Software Development: Basic Driver Virtual Addressing Question
I have written a simple "hello world" driver and I am trying to display the value of the OMAP REVID register from the... david kasper
05:27 PM Software Development: RE: Loading FPGA
Hi David,
Currently, there is a bug in the fpga_ctrl.ko driver that could result in spurious interrupts if you re-...
Michael Williamson
05:07 PM Software Development: RE: Loading FPGA
Has anybody tried the online procedure "Using Linux drivers to load the FPGA?" I get an infinite printf loop after r... david kasper

12/07/2010

06:11 PM Software Development: RE: I2C Board Support Package
I'm realizing I'm not clear on the hardware. Is it the card that is "Rev B" or the board the card is seated on? Is it... Dennis Volper

12/04/2010

12:52 PM Software Development: RE: I2C Board Support Package
Hi Dennis,
I tried the same steps as you listed above on a revision A board as well as a C board and don't see thi...
Michael Williamson
12:33 PM Software Development: RE: MityDSP Memory Map
The chip select 5 address space starts at 0x66000000.
The memory map for the MityDSP-L138 (the OMAP-L138 Processor...
Michael Williamson

12/03/2010

05:18 PM Software Development: MityDSP Memory Map
Does anybody know the memory map of the MityDSP? I would like to test FPGA functionality added by our HW designer at... david kasper
04:15 PM Software Development: RE: I2C Board Support Package
I backed up and repeated my steps today.
1) Stock kernel on the rev B card: i2cdump -y 1 0x51 works.
Presumably th...
Dennis Volper
10:24 AM Software Development: RE: I2C Board Support Package
Unfortunately, the Rev-B industrial I/O boards do not have anything hooked to the I2C0 port outside of the SOM.
R...
Michael Williamson

12/02/2010

07:08 PM Software Development: RE: I2C Board Support Package
Sorry, did not manage to dig that out of the kernel. What I could use now as a sanity test is an i2cdump address of s... Dennis Volper
06:47 PM Software Development: RE: I2C Board Support Package
The 1 does indicate which bus. It tells i2cdump to open "/dev/i2c-1" instead of "/dev/i2c-2". It is used to append ... Michael Williamson
06:26 PM Software Development: RE: I2C Board Support Package
The board rev is the same, a few differences with some of the hex codes. But doesn't the 1 in that command indicate w... Dennis Volper
06:02 PM Software Development: RE: I2C Board Support Package
OK. Looks like your I2C0 port is up and running and is communicating with the on-board devices in the kernel.
Try...
Michael Williamson
05:42 PM Software Development: RE: I2C Board Support Package
Here it is:... Dennis Volper
05:31 PM Software Development: RE: I2C Board Support Package
I2C0 is actually /dev/i2c-1 (bus numbering for i2c starts at 1 in the kernel, it's a bit arbitrary actually).
Ther...
Michael Williamson
04:46 PM Software Development: RE: I2C Board Support Package
So my problem is I'm only seeing /dev/i2c-1 after the boot. Dennis Volper
04:36 PM Software Development: RE: I2C Board Support Package
We are using I2C0 for both the Audio Chip and the Touch Screen Controller both of which have different I2C addresses ... John Mladenik
04:24 PM Software Development: RE: I2C Board Support Package
There are 2 I2C devices on the OMAP. I2C0 and I2C1. Both are brought out to the edge connector, Which are you using... Michael Williamson
03:47 PM Software Development: RE: I2C Board Support Package
Still stuck. The dump of the entire set of boot messages is attached. There are only two i2c messages in the boot (1)... Dennis Volper
04:00 PM FPGA Development: RE: question on base_module.vhd
Mike,
Thanks, that's exactly what I was looking for. No further questions at this point.
Regards, Dene
Dene Olsen
03:48 PM FPGA Development: RE: question on base_module.vhd

Q - "Are any of the features or functions designed such that they shouldn't be duplicated in a second version of th...
Michael Williamson
03:32 PM FPGA Development: RE: question on base_module.vhd
I figure there's a chance that we may want to use some of the cores/drivers in the future. Therefore, my design appro... Dene Olsen
02:57 PM FPGA Development: RE: question on base_module.vhd
Hello Dene,
The base module was designed to be plugged into our framework (using the EMIF_Iface.vhd). It does do ...
Michael Williamson
02:41 PM FPGA Development: question on base_module.vhd
There seem to be many features and functions in base_module.vhd.
I've been planning to create my own version and lea...
Dene Olsen

12/01/2010

08:13 AM Software Development: RE: I2C Board Support Package
Hello Mr. Volper,
Are you still stuck on this issue, or did reseating the card resolve the I2C problems?
-Mike
Michael Williamson

11/30/2010

04:02 PM FPGA Development: RE: OMAP-L138 EMA_WE vs. EMA_A_RW documentation descrepancy, usage
Sure, as long as you don't want to reconfigure the FPGA at runtime, you could modify the usage assignment and forget ... Michael Williamson
03:54 PM FPGA Development: RE: OMAP-L138 EMA_WE vs. EMA_A_RW documentation descrepancy, usage
Mike,
In our implementation, we already need to pass some reads and writes through to another FPGA on our "carrier...
Dene Olsen
03:23 PM FPGA Development: RE: OMAP-L138 EMA_WE vs. EMA_A_RW documentation descrepancy, usage
I don't see any technical reason why you could not use it, but it is preferable that you do not use the EMA_A_RW pin.... Michael Williamson
02:52 PM FPGA Development: OMAP-L138 EMA_WE vs. EMA_A_RW documentation descrepancy, usage

There seems to be a slight discrepancy in how EMA_A_RW is described vs. how it's used.
In one area of TI's docum...
Dene Olsen

11/29/2010

07:33 AM FPGA Development: RE: EMA_WAIT usage
The OMAP-L138 processor includes internal pull-up / pull-down capability on just about every peripheral pin. This wa... Michael Williamson
03:38 AM FPGA Development: EMA_WAIT usage
I believe our design will require use of a wait signal to the processor.
There are two such signals available, one o...
Dene Olsen
07:11 AM FPGA Development: RE: fpga EMIFA interface: BA(1) = EMA_A(14)?
The FPGA address / data / control signals are indeeded sampled and run off of the EMA_CLK, which is configured for 10... Michael Williamson

11/28/2010

07:07 PM FPGA Development: RE: fpga EMIFA interface: BA(1) = EMA_A(14)?
Thanks,
That section and that document were exactly what I was looking for.
You're right, of course, about the co...
Dene Olsen

11/27/2010

07:26 PM FPGA Development: RE: fpga EMIFA interface: BA(1) = EMA_A(14)?
Hi Dene,
Actually, that concatenation puts the assignment of EMA_BA(1) to bit 0 of the address (the LSB) for a 16 ...
Michael Williamson
07:10 PM FPGA Development: fpga EMIFA interface: BA(1) = EMA_A(14)?
I notice in EMIFA_iface.vhd that the EMIFA bank address bit 1 -> i_ema_ba(1) <- is concatenated to the top of the in... Dene Olsen

11/23/2010

08:57 PM Software Development: RE: I2C Board Support Package
Odd:... Dennis Volper
08:14 PM Software Development: RE: I2C Board Support Package
Oh... and as far as the pinmux, the u-Boot should be configuring the pinmux for I2C0. It will always do that as it n... Michael Williamson
08:13 PM Software Development: RE: I2C Board Support Package
My guess is that the MAC is a random MAC generated by the kernel because all zeros is an illegal MAC (check the kerne... Michael Williamson
07:45 PM Software Development: RE: I2C Board Support Package
... Dennis Volper
06:35 PM Software Development: RE: I2C Board Support Package
Hi Dennis,
Which Revision of the Industrial I/O are you using? Rev A Industrial I/O boards have the I2C port of t...
Michael Williamson
05:55 PM Software Development: RE: I2C Board Support Package
I tried the following experiment. On an Industrial I/O board I replaced the Rev A OMAP card with a fresh out of the p... Dennis Volper

11/19/2010

12:14 PM Software Development: RE: Driver Development Procedure
Mike,
For some reason the source gets messed-up when pasting into the reply box. Therefore, I have attached the m...
david kasper

11/18/2010

07:22 PM Software Development: RE: Driver Development Procedure
Mike,
Thanks for your fast reply. I have installed the 32-bit GCC running on Fedora 9. Also I have successfully ...
david kasper
06:56 PM Software Development: RE: Driver Development Procedure
Hi David,
There's no magic with the kernel sources we're using. Your makefile looks OK to me.
This is just a ...
Michael Williamson
06:17 PM Software Development: Driver Development Procedure
I need to create a loadable Linux module that runs on the ARM9 of the MityDSP-L138 and accesses the FPGA. Preferrabl... david kasper
03:25 PM Software Development: RE: I2C Board Support Package
Got the new kernel. Compiled and loaded it onto the board. Most things work, but i2cdump seems to have changed. My ha... Dennis Volper

11/16/2010

07:44 AM Software Development: RE: I2C Board Support Package
Hi Simon -
The latest version of our kernel is included in the tarball on the BSP wiki page located here:
htt...
Thomas Catalino

11/15/2010

10:34 PM Software Development: RE: Boot loader on NAND instead of NOR

Hi Simon,
It is still a good idea to hook up the MDIO pins to the PHY. The same two MDIO pins used in MII mode ...
Mike Pilawa
09:36 PM Software Development: RE: Boot loader on NAND instead of NOR
Hey Mike,
Yes the RMII is a good alternative. When we will be there, I will probably ask for some support. What we...
Simon Therriault
05:34 PM Software Development: RE: Boot loader on NAND instead of NOR

Hi Simon,
While it is indeed possible for the OMAP-L138 CPU to boot from NAND, this is not a boot mode that Crit...
Mike Pilawa
 

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