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by mortaca
Mon Mar 27, 2017 5:51 pm
Forum: Advanced users
Topic: STICKY: HOWTO: Create Custom HDMI modes
Replies: 199
Views: 244783

Re: HOWTO: Create Custom HDMI modes

rmast wrote: hdmi_timings=1920 1 48 192 240 576 1 6 3 16 0 0 2 50 1 37560000 1 # perfect
hdmi_timings=960 1 24 96 120 576 1 6 3 16 0 0 1 50 1 18780000 1 # perfect
Why interlaced modes don't work by the DPI output?

Image

How to is possible active the interlaced mode over DPI?
by mortaca
Wed Dec 21, 2016 11:29 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: [Patch]bcm2835.c to move native-cs to gpio-cs
Replies: 0
Views: 326

[Patch]bcm2835.c to move native-cs to gpio-cs

I need to change the native CS for another of the GPIO, in the following link have been able for the spi-bcm2835.c version, but I can not carry the changes to the arm version. https://patchwork.kernel.org/patch/6163541/ I have tried to change the line where the spi begin, and puts the GPIO in the co...
by mortaca
Tue Nov 01, 2016 11:41 am
Forum: Advanced users
Topic: STICKY: HOWTO: Create Custom HDMI modes
Replies: 199
Views: 244783

Re: HOWTO: Create Custom HDMI modes

ironic-FR I am using CRU 1.3 and does not generate the same values as you.

Image
by mortaca
Tue Oct 18, 2016 12:36 am
Forum: HATs and other add-ons
Topic: Gert's VGA add-on for the B+
Replies: 240
Views: 96322

Re: Gert's VGA add-on for the B+

Ok, the solution to use UART and DPI is to make a modified dpi24.dtbo and change rgb_order to put red instead of green because the human eye is more sensitive to green scale, the problem is I do not understand the dpi_output_format. How is the magic number calculated? output_format = (dpi_output_for...
by mortaca
Mon Oct 17, 2016 8:59 am
Forum: HATs and other add-ons
Topic: Gert's VGA add-on for the B+
Replies: 240
Views: 96322

Re: Gert's VGA add-on for the B+

That table know her well, my example is based on it, but in Mode 5 pins 10 and 11 is output green, is not possible to use the GPIO from 4 to 13 in Mode 5 and from 16 to 25 in mode 6? Example Custom mode NOT WORKING: http://i.imgur.com/FZQKS1m.jpg Another combination is use mode 7 changing rgb_order ...
by mortaca
Mon Oct 17, 2016 1:45 am
Forum: HATs and other add-ons
Topic: Gert's VGA add-on for the B+
Replies: 240
Views: 96322

Re: Gert's VGA add-on for the B+

Hi, I hope you can help me with this modification. I want to use UART and at the same time DPI, I decompiled dpi24.dtbo and have disabled GPIO 14-15 and enable 10-11 Now, how do I can make a custom mode for dpi_output_format? For example a change in the mode 6, something like this; Mode 6 original -...
by mortaca
Fri Oct 14, 2016 12:19 pm
Forum: Advanced users
Topic: STICKY: HOWTO: Create Custom HDMI modes
Replies: 199
Views: 244783

Re: HOWTO: Create Custom HDMI modes

Hi, PetteriB ¿how you create the correct hdmi_timings? still I do not understand, in my EDID not find me anything to be using an DIY adapter GPIO>VGA. Your hdmi_timings I have worked in my 15kHz arcade monitor. But I am very interested to have 640x480i and can not find a way to generate it. Thank yo...

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