Re: [beagleboard] Re: 4dcape-70t lcd and jitter issues
Hi Dan, Glad it worked. It is still a hack and there is most probably a better solution. I still get some random clicks in the bottom left corner from time to time. Cheers, Alex On Mon, Mar 3, 2014 at 2:39 PM, daniel.re...@gmail.com wrote: Alex, it appears your files are working. I can't thank you enough for the patch. I simply replaced all the files by mounting a previous SD card image and copying all the files to the appropriate locations. Your code fixes the issue. Again thanks thanks thanks. Dan On Sunday, March 2, 2014 12:27:53 PM UTC-5, daniel...@gmail.com wrote: Any chance you could upload a full image file of debian with your fix to a site like drop box or something? One that I could use Win32DiskImager to burn to a 4 gig micro sd card? I would really appreciate it. Thanks. Dan On Friday, February 28, 2014 11:44:19 AM UTC-5, Alex Gal wrote: Hi Daniel, Alex, can you help me, I have the exact same issue. Could you upload your image that fixes the issue with the 5 micro seconds delay. Are you running debian or Ubuntu? I am not an expert on rebuilding the kernel to change the ti_am335x_tsc.c. I use debian and angstrom. I modified RCN's kernel with a 15 microsecond hack. I'll email you directly the contents of deploy: 3.8.13-bone40.1-dtbs.tar.gz 3.8.13-bone40.1-modules.tar.gz config-3.8.13-bone40.1 3.8.13-bone40.1-firmware.tar.gz 3.8.13-bone40.1.zImage Cheers, Alex -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: [beagleboard] Re: 4dcape-70t lcd and jitter issues
Alex, it appears your files are working. I can't thank you enough for the patch. I simply replaced all the files by mounting a previous SD card image and copying all the files to the appropriate locations. Your code fixes the issue. Again thanks thanks thanks. Dan On Sunday, March 2, 2014 12:27:53 PM UTC-5, daniel...@gmail.com wrote: Any chance you could upload a full image file of debian with your fix to a site like drop box or something? One that I could use Win32DiskImager to burn to a 4 gig micro sd card? I would really appreciate it. Thanks. Dan On Friday, February 28, 2014 11:44:19 AM UTC-5, Alex Gal wrote: Hi Daniel, Alex, can you help me, I have the exact same issue. Could you upload your image that fixes the issue with the 5 micro seconds delay. Are you running debian or Ubuntu? I am not an expert on rebuilding the kernel to change the ti_am335x_tsc.c. I use debian and angstrom. I modified RCN's kernel with a 15 microsecond hack. I'll email you directly the contents of deploy: 3.8.13-bone40.1-dtbs.tar.gz 3.8.13-bone40.1-modules.tar.gz config-3.8.13-bone40.1 3.8.13-bone40.1-firmware.tar.gz 3.8.13-bone40.1.zImage Cheers, Alex -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: [beagleboard] Re: 4dcape-70t lcd and jitter issues
Any chance you could upload a full image file of debian with your fix to a site like drop box or something? One that I could use Win32DiskImager to burn to a 4 gig micro sd card? I would really appreciate it. Thanks. Dan On Friday, February 28, 2014 11:44:19 AM UTC-5, Alex Gal wrote: Hi Daniel, Alex, can you help me, I have the exact same issue. Could you upload your image that fixes the issue with the 5 micro seconds delay. Are you running debian or Ubuntu? I am not an expert on rebuilding the kernel to change the ti_am335x_tsc.c. I use debian and angstrom. I modified RCN's kernel with a 15 microsecond hack. I'll email you directly the contents of deploy: 3.8.13-bone40.1-dtbs.tar.gz 3.8.13-bone40.1-modules.tar.gz config-3.8.13-bone40.1 3.8.13-bone40.1-firmware.tar.gz 3.8.13-bone40.1.zImage Cheers, Alex -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: [beagleboard] Re: 4dcape-70t lcd and jitter issues
Hi Daniel, Alex, can you help me, I have the exact same issue. Could you upload your image that fixes the issue with the 5 micro seconds delay. Are you running debian or Ubuntu? I am not an expert on rebuilding the kernel to change the ti_am335x_tsc.c. I use debian and angstrom. I modified RCN's kernel with a 15 microsecond hack. I'll email you directly the contents of deploy: 3.8.13-bone40.1-dtbs.tar.gz 3.8.13-bone40.1-modules.tar.gz config-3.8.13-bone40.1 3.8.13-bone40.1-firmware.tar.gz 3.8.13-bone40.1.zImage Cheers, Alex -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
[beagleboard] Re: 4dcape-70t lcd and jitter issues
Alex, can you help me, I have the exact same issue. Could you upload your
image that fixes the issue with the 5 micro seconds delay. Are you running
debian or Ubuntu? I am not an expert on rebuilding the kernel to change
the ti_am335x_tsc.c.
Thanks
On Friday, February 7, 2014 1:44:34 PM UTC-5, Alex Gal wrote:
Hello all,
I forgot to mention that adding a udelay of 5 microseconds seems to
make the issue go away:
diff --git a/drivers/input/touchscreen/ti_am335x_tsc.c
b/drivers/input/touchscreen/ti_am335x_tsc.c
index ed83043..e1c0499 100644
--- a/drivers/input/touchscreen/ti_am335x_tsc.c
+++ b/drivers/input/touchscreen/ti_am335x_tsc.c
@@ -227,6 +227,7 @@ static void titsc_read_coordinates(struct titsc
*ts_dev,
nY=0;
for (i = 0; i fifocount; i++) {
read = titsc_readl(ts_dev, REG_FIFO0);
+ udelay(5);
channel = (read 0xf) 16;
read = 0xfff;
So this bug seems to be related perhaps to synchronization issues, I
do not know. I noticed that the bug went away when I added printk
statements. Unfortunately, that does not help me with the debugging.
If anybody has any ideas, let me know.
Cheers,
Alex
--
For more options, visit http://beagleboard.org/discuss
---
You received this message because you are subscribed to the Google Groups
BeagleBoard group.
To unsubscribe from this group and stop receiving emails from it, send an email
to beagleboard+unsubscr...@googlegroups.com.
For more options, visit https://groups.google.com/groups/opt_out.
[beagleboard] Re: 4dcape-70t lcd and jitter issues
Hello all,
I forgot to mention that adding a udelay of 5 microseconds seems to
make the issue go away:
diff --git a/drivers/input/touchscreen/ti_am335x_tsc.c
b/drivers/input/touchscreen/ti_am335x_tsc.c
index ed83043..e1c0499 100644
--- a/drivers/input/touchscreen/ti_am335x_tsc.c
+++ b/drivers/input/touchscreen/ti_am335x_tsc.c
@@ -227,6 +227,7 @@ static void titsc_read_coordinates(struct titsc *ts_dev,
nY=0;
for (i = 0; i fifocount; i++) {
read = titsc_readl(ts_dev, REG_FIFO0);
+ udelay(5);
channel = (read 0xf) 16;
read = 0xfff;
So this bug seems to be related perhaps to synchronization issues, I
do not know. I noticed that the bug went away when I added printk
statements. Unfortunately, that does not help me with the debugging.
If anybody has any ideas, let me know.
Cheers,
Alex
--
For more options, visit http://beagleboard.org/discuss
---
You received this message because you are subscribed to the Google Groups
BeagleBoard group.
To unsubscribe from this group and stop receiving emails from it, send an email
to beagleboard+unsubscr...@googlegroups.com.
For more options, visit https://groups.google.com/groups/opt_out.
