Hi,
I'm using the iMX6DL and Linux kernel 3.0.35
I tested each of LCD(via ADV7125) and LVDS.
But my ultimate goal is see the same screen at same time. (Mirroring.)
So I tried below step,
1. set the bootargs
"root=/dev/mmcblk0p1 rootfstype=ext4 rootwait rw video=mxcfb0:dev=ldb,LDB-VGA,bpp=32 video=mxcfb1:dev=lcd,LCD-640, if=RGB24, bpp=32 \0"
2. set the lcdif_data & ldb_data in the kernel source.
static struct fsl_mxc_lcd_platform_data lcdif_data = {
.ipu_id = 0,
.disp_id = 0,
};
static struct fsl_mxc_ldb_platform_data ldb_data = {
.ipu_id = 0,
.disp_id = 0,
.ext_ref = 1,
.mode = LDB_SEP0,
.sec_ipu_id = 1,
.sec_disp_id = 1,
};
※ I think, this is mirroring. so, it need same setting of ipu_id & disp_id. Isn't it??
3. in the initializing code, I added each datas like this,
imx6q_add_ldb(&ldb_data);
imx6q_add_lcdif(&lcdif_data);
Is this add order affect the "bootargs"'s framebuffer setting?
ex ) if I set the mxcfb0 to ldb, then should I call the "imx6q_add_ldb(&ldb_data);" earlier than "imx6q_add_lcdif(&lcdif_data);" ??
Actually,
I tried change the "ipu_id" and "disp_id " and
bootargs 's this line -> "video=mxcfb0:dev=ldb,LDB-VGA,bpp=32 video=mxcfb1:dev=lcd,LCD-640, if=RGB24, bpp=32"
(mxcfb0 and mxcfb1) by so many combinations.
In this tests, I saw only one output of lcd or lvds. Sometimes I cannot see any output of lcd & lvds.
But I never seen the both output at same time.
What can I do??
I understood another thing.
If I connecting the DISP0_DAT0~DAT23 to IPU1_DISP0_DAT_0~23,
Then each display pins are looking the IPU1.
So even if I set the only LVDS output(IPU1) in the bootargs, lcd monitor can get a data.
But problem is,
mxcfb0 is same as LVDS & LCD.
So, they are get a same timing.
But if I matching the LVDS's timing for good output,
then LCD cannot show the screen. (out of range.)
Also, if I set the LCD's timing, then LCD can showing the output but LVDS cannot showing anything.
I think, best solution is change the LVDS part. (could following the LCD's timing)
But at this time, it is hard for me.
So, if I could cloning the framebuffer, then I can allocating the cloned framebuffer to lcd or lvds.
Is this possible??
If not, I considering about change the iMX6Dual.
Actually, already I designed iMX6Dual-Lite, but is this possible to pin to pin changing the upper model?
Thank you for your kindly concerning..
Hi
You will have to change the kernel version to newer version, In 3.0.35 is not supported, however if you like to try: