Search found 13 matches
- Mon Jun 24, 2019 11:17 am
- Forum: Advanced users
- Topic: How to correctly set up v4l2 (m2m) under 64-bit kernel / 64-bit userland?
- Replies: 16
- Views: 12294
Re: How to correctly set up v4l2 (m2m) under 64-bit kernel / 64-bit userland?
I'm getting a bunch of errors in dmesg (20-22 lines) while starting playback and a few such errors during playback: ... [ 6600.658148] vc_sm_cma_import_dmabuf_internal: Expecting an uncached alias for dma_addr 0x4ab00000 [ 6600.680280] vc_sm_cma_import_dmabuf_internal: Expecting an uncached alias fo...
- Sun Apr 23, 2017 1:09 pm
- Forum: OpenGLES
- Topic: Can't render to render buffer
- Replies: 1
- Views: 2868
Can't render to render buffer
I'd like to do offscreen rendering and processing using render buffer and EGL_IMAGE_BRCM_VCSM: GLuint buffer = 0; m_gl_funcs->glGenRenderbuffers(1, &buffer); m_gl_funcs->glBindRenderbuffer(GL_RENDERBUFFER, buffer); m_vcsm_info->width = m_vcsm_info->height = 2048; EGLImageKHR eglFbImage = eglCrea...
- Wed Mar 22, 2017 10:05 pm
- Forum: Interfacing (DSI, CSI, I2C, etc.)
- Topic: Device Tree in initramfs
- Replies: 0
- Views: 395
Device Tree in initramfs
I'm building custom kernel and wanted to know if it's possible to place Device Tree and all overlays inside initramfs image.
Also is there any way to merge all overlays (using dtmerge ?) into single Device Tree on host machine (x86)?
Also is there any way to merge all overlays (using dtmerge ?) into single Device Tree on host machine (x86)?
- Sat Feb 11, 2017 4:42 pm
- Forum: OpenGLES
- Topic: MMAL video playback and OpenGL ES
- Replies: 0
- Views: 2134
MMAL video playback and OpenGL ES
Hi,
Is there any way of playing video using MMAL and display it using OpenGL ES in zero copy mode?
Is there any way of playing video using MMAL and display it using OpenGL ES in zero copy mode?
- Sun Oct 30, 2016 8:38 pm
- Forum: General discussion
- Topic: Boot from second SD card (SD1 pins)
- Replies: 9
- Views: 2726
Re: Boot from second SD card (SD1 pins)
Here is interesting info about boot from secondary SD: ... If enabled: check secondary SD Success - Boot Fail - timeout (five seconds) ... The primary SD card boot mode is, as standard, set to be GPIOs 49-53. It is possible to boot from the secondary SD card on a second set of pins, i.e. to add a s...
- Sun Oct 30, 2016 12:10 pm
- Forum: Graphics programming
- Topic: Minimal MMAL Video Player
- Replies: 0
- Views: 1237
Minimal MMAL Video Player
Hello,
I couldn't find info on how to build minimal video player using MMAL.
The idea is to use MMAL container to parse mp4 stream and display it on screen (with something similar to OpenMAX's video_render).
Could you help me with some code examples?
Thanks.
I couldn't find info on how to build minimal video player using MMAL.
The idea is to use MMAL container to parse mp4 stream and display it on screen (with something similar to OpenMAX's video_render).
Could you help me with some code examples?
Thanks.
- Tue Oct 25, 2016 3:12 pm
- Forum: General discussion
- Topic: Secure Boot / OTP / Encrypted Boot
- Replies: 15
- Views: 10597
Re: Secure Boot / OTP / Encrypted Boot
I have the same question. Will it be possible to use secure boot? Is it even possible with this hardware? There is Secure Boot on the VC4 part :) Including encrypted suspend/resume RAM :mrgreen: However, I don't know if a blob verifying the Linux kernel signature is existing Could you explain it in...
- Sat Mar 19, 2016 2:02 am
- Forum: General discussion
- Topic: Secure Boot / OTP / Encrypted Boot
- Replies: 15
- Views: 10597
Re: Secure Boot / OTP / Encrypted Boot
I have the same question. Will it be possible to use secure boot?
Is it even possible with this hardware?
Is it even possible with this hardware?
- Sun Sep 20, 2015 2:58 am
- Forum: Official Foundation Display
- Topic: Connect second HDMI monitor to DSI interface
- Replies: 1
- Views: 1166
Connect second HDMI monitor to DSI interface
Hi, I'd like to use two regular HDMI monitors for my setup and DSI port perfectly fits for this role. I wonder is it possible to connect HDMI monitor using DSI-to-HDMI bridge (ADV7533) board and get correct picture on screen? Also can I expect 1080p picture resolution from such configuration or firm...
- Sat Aug 08, 2015 12:27 am
- Forum: HATs and other add-ons
- Topic: Gert's VGA add-on for the B+
- Replies: 240
- Views: 140969
Re: Gert's VGA add-on for the B+
Hello,
What chip should I use to convert DPI to HDMI? I'd like to have two HDMI outputs.
What chip should I use to convert DPI to HDMI? I'd like to have two HDMI outputs.
- Sat Aug 08, 2015 12:02 am
- Forum: HATs and other add-ons
- Topic: Setting up VGA666
- Replies: 15
- Views: 5450
Re: Setting up VGA666
Can I use VGA adapter that uses all GPIO pins for 24bit colour (VGA888) with current firmware?
- Tue May 19, 2015 7:24 am
- Forum: OpenMAX
- Topic: OpenMAX render video to MIPI DSI
- Replies: 2
- Views: 2454
OpenMAX render video to MIPI DSI
Hi, I'd like to know if it is possible to render video via video_render component directly to DSI display?
- Sat Jun 07, 2014 3:17 pm
- Forum: Graphics programming
- Topic: Dispmanx HDMI blackout
- Replies: 8
- Views: 5748
Re: Dispmanx HDMI blackout
Any updates on how to fix this behaviour?