I use an Angstrom kernel 2.6.32 build with openembedded on a DM6446 processor.
When I write an RGB565 bitmap image to the framebuffer (OSD0 layer) than the displayed
image is somehow distorted. You can see this especially in the text. It looks like if there is some
uncorrect offset when the driver displayes the second frame of the image.
I use the following bootparameters to initialize the framebuffer driver:
The displaying of images works perfectly with an old Montavista kernel. I have looked for
specific driver options but didn't find nothing which did really help. Any suggestions where I
could look or what could be wrong?
The issue was caused by the hardware bug 1.3.8 in the TMS320DM6446 of revision 1.1. The bug fix
was not merged in the current driver of the Angstrom kernel 2.6.32.
All content and materials on this site are provided "as is". TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with regard to these materials, including but not limited to all implied warranties and conditions of merchantability, fitness for a particular purpose, title and non-infringement of any third party intellectual property right. TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with respect to these materials. No license, either express or implied, by estoppel or otherwise, is granted by TI. Use of the information on this site may require a license from a third party, or a license from TI.
TI is a global semiconductor design and manufacturing company. Innovate with 100,000+ analog ICs andembedded processors, along with software, tools and the industry’s largest sales/support staff.