Activity
From 12/06/2010 to 01/04/2011
12/14/2010
- DV 06:40 PM Software Development: RE: I2C Board Support Package
- I've been playing with the kernel trying to narrow down the problem. With the new kernel I can get i2cdump -y 1 0x51 to work by modifying mityomapl138_mcasp_pins back to the value of the 2010.05 kernel. I don't understand why this change...
12/13/2010
- I have downloaded the u-boot snapshot. Can someone tell me the build command sequence in order to support the MityDSP L138 module? My end goal is to build the Linux kernel; however I get an error during this process indicating mkimage ...
12/10/2010
- MW 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 core voltage adjustments. I will check today.
Would it be possible for you to provide (offline, via email or some o...
12/09/2010
- DV 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 kernel did not try to activate the i2c lines going for the SOC, while the 2010-10-12 does try to activate those lines. A...
- MW 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":http://lwn.net/Kernel/LDD3/ which is extremely helpful.
Short answer is that you need to map in IO regions (physical ad... - I have written a simple "hello world" driver and I am trying to display the value of the OMAP REVID register from the init function. I assigned the physical address to a pointer; however a segmentation fault is generated when memory is ...
- MW 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-program the FPGA a second time (after issuing a "3" / probing command to /sys/devices/fpga_ctrl/cmd). This is due to th... - DK 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 reset is commanded as follows:
# cat /proc/modules
fpga_ctrl is displayed with live status
# echo "1" > /sys/dev...
12/07/2010
- DV 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 the card that contains address 0x51 or the board the card is seated on? I do have two different cards, they have differ...