I believe this will do it for you. Code provided for their demo units. Its due in the end, to the fact that the board outputs one strict resolution. I can't find any sort of licensing on this tiny bit of code though, but the source is made public, freely available with no warranty is the closest I can find to a license.


#include <fcntl.h>

#include <linux/fb.h>

#include <sys/ioctl.h>

#include <sys/mman.h>

#include <unistd.h>

#include <assert.h>

int main(int argc, char **argv) {

struct fb_fix_screeninfo fixed;

struct fb_var_screeninfo variable;

char *fb;

int line_size, size, buffer_size, i;

int fd = open("/dev/fb0", O_RDWR);

ioctl(fd, FBIOGET_VSCREENINFO, &variable);

variable.xres = 1280;

variable.yres = 720;

variable.xres_virtual = 1280;

variable.yres_virtual = 1440;

variable.bits_per_pixel = 24;

ioctl(fd, FBIOPUT_VSCREENINFO, &variable);

ioctl(fd, FBIOGET_FSCREENINFO, &fixed);

variable.xoffset = 0;

variable.yoffset = 720;

ioctl(fd, FBIOPAN_DISPLAY, &variable);

variable.xoffset = 0;

variable.yoffset = 0;

ioctl(fd, FBIOPAN_DISPLAY, &variable);

close(fd);

return 0;

}

On November 9, 2015 4:22:42 PM CST, Jim Perrin <jperrin@centos.org> wrote:
I've posted a first build of CentOS for the Hikey from 96boards, and a
ReadMe with the steps required to get the board going.

http://people.centos.org/jperrin/hikey/

The ReadMe assumes that you've at least skimmed the 'Getting Started'
section of the Hikey documentation, but walks through the fastboot
commands to load the image.

What I consider the 'blocker' to releasing this image presently is the
lack of console output on HDMI. If someone's able to make that go, I
will happily mail them some CentOS swag and put their name in the
release notes for the image.