i.MX6Q HDMI can only support these modes?

zhiyancao — Sat, 08 Feb 2014 09:43:56 GMT

At /drivers/video/mxc/mxc_edid.c,

const struct fb_videomode mxc_cea_mode[64] = {

/* #1: 640x480p@59.94/60Hz 4:3 */

[1] = {

NULL, 60, 640, 480, 39722, 48, 16, 33, 10, 96, 2, 0,

FB_VMODE_NONINTERLACED | FB_VMODE_ASPECT_4_3, 0,

/* #2: 720x480p@59.94/60Hz 4:3 */

[2] = {

NULL, 60, 720, 480, 37037, 60, 16, 30, 9, 62, 6, 0,

FB_VMODE_NONINTERLACED | FB_VMODE_ASPECT_4_3, 0,

/* #3: 720x480p@59.94/60Hz 16:9 */

[3] = {

NULL, 60, 720, 480, 37037, 60, 16, 30, 9, 62, 6, 0,

FB_VMODE_NONINTERLACED | FB_VMODE_ASPECT_16_9, 0,

/* #4: 1280x720p@59.94/60Hz 16:9 */

[4] = {

NULL, 60, 1280, 720, 13468, 220, 110, 20, 5, 40, 5,

FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,

FB_VMODE_NONINTERLACED | FB_VMODE_ASPECT_16_9, 0

/* #5: 1920x1080i@59.94/60Hz 16:9 */

[5] = {

NULL, 60, 1920, 1080, 13763, 148, 88, 15, 2, 44, 5,

FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,

FB_VMODE_INTERLACED | FB_VMODE_ASPECT_16_9, 0,

/* #6: 720(1440)x480iH@59.94/60Hz 4:3 */

[6] = {

NULL, 60, 1440, 480, 18554/*37108*/, 114, 38, 15, 4, 124, 3, 0,

FB_VMODE_INTERLACED | FB_VMODE_ASPECT_4_3, 0,

/* #7: 720(1440)x480iH@59.94/60Hz 16:9 */

[7] = {

NULL, 60, 1440, 480, 18554/*37108*/, 114, 38, 15, 4, 124, 3, 0,

FB_VMODE_INTERLACED | FB_VMODE_ASPECT_16_9, 0,

/* #8: 720(1440)x240pH@59.94/60Hz 4:3 */

[8] = {

NULL, 60, 1440, 240, 18554, 114, 38, 16, 4, 124, 3, 0,

FB_VMODE_NONINTERLACED | FB_VMODE_ASPECT_16_9, 0,

/* #9: 720(1440)x240pH@59.94/60Hz 16:9 */

[9] = {

NULL, 60, 1440, 240, 18554, 114, 38, 16, 4, 124, 3, 0,

FB_VMODE_NONINTERLACED | FB_VMODE_ASPECT_16_9, 0,

/* #16: 1920x1080p@60Hz 16:9 */

[16] = {

NULL, 60, 1920, 1080, 6734, 148, 88, 36, 4, 44, 5,

FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,

FB_VMODE_NONINTERLACED | FB_VMODE_ASPECT_16_9, 0,

/* #17: 720x576pH@50Hz 4:3 */

[17] = {

NULL, 50, 720, 576, 37037, 68, 12, 39, 5, 64, 5, 0,

FB_VMODE_NONINTERLACED | FB_VMODE_ASPECT_4_3, 0,

/* #18: 720x576pH@50Hz 16:9 */

[18] = {

NULL, 50, 720, 576, 37037, 68, 12, 39, 5, 64, 5, 0,

FB_VMODE_NONINTERLACED | FB_VMODE_ASPECT_16_9, 0,

/* #19: 1280x720p@50Hz */

[19] = {

NULL, 50, 1280, 720, 13468, 220, 440, 20, 5, 40, 5,

FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,

FB_VMODE_NONINTERLACED | FB_VMODE_ASPECT_16_9, 0,

/* #20: 1920x1080i@50Hz */

[20] = {

NULL, 50, 1920, 1080, 13480, 148, 528, 15, 5, 528, 5,

FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,

FB_VMODE_INTERLACED | FB_VMODE_ASPECT_16_9, 0,

/* #31: 1920x1080p@50Hz */

[31] = {

NULL, 50, 1920, 1080, 6734, 148, 528, 36, 4, 44, 5,

FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,

FB_VMODE_NONINTERLACED | FB_VMODE_ASPECT_16_9, 0,

/* #32: 1920x1080p@23.98/24Hz */

[32] = {

NULL, 24, 1920, 1080, 13468, 148, 638, 36, 4, 44, 5,

FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,

FB_VMODE_NONINTERLACED | FB_VMODE_ASPECT_16_9, 0,

/* #35: (2880)x480p4x@59.94/60Hz */

[35] = {

NULL, 60, 2880, 480, 9250, 240, 64, 30, 9, 248, 6, 0,

FB_VMODE_NONINTERLACED | FB_VMODE_ASPECT_4_3, 0,

};

my hdmi display monitor have 20 mode, but it only match the first item in mxc_cea_mode, so at last, my hdmi only work on 640*480.

the array can add other mode by myself?

Re: i.MX6Q HDMI can only support these modes?

EricNelson — Sat, 08 Feb 2014 16:32:04 GMT

Hi Zhiyan,

You can't simply add CEA modes, because they are tied to audio output.

You can over-ride the requirement for CEA modes as we've done in our

kernels, but this will mess up the audio clocking.

See these two posts for more details:

http://boundarydevices.com/?s=cea+modes

Re: i.MX6Q HDMI can only support these modes?

zhiyancao — Mon, 10 Feb 2014 02:50:16 GMT

Hi Eric:

Thank you for your advice.

I try the method. But my monitor does not light at 1024*768. It only work at 640*480.

There are other problems. My first monitor is vga, it use ipu0 and di0, it works at 1024*768@60 video mode, its name is DISP3 BG;

my second monitor is hdmi, it use ipu1 and di0, it works at 640*480@60 video mode, its name is DISP4 BG.

Each monitor use one ipu, i.MX6q should support?

Could you give me some more hits?

Re: i.MX6Q HDMI can only support these modes?

EricNelson — Mon, 10 Feb 2014 23:33:29 GMT

Hi Zhiyan,

i.MX6Q definitely supports this, and you should get proper audio with VGA timings (because that's a CEA mode).

Are you operating with EDID support?

Re: i.MX6Q HDMI can only support these modes?

zhiyancao — Tue, 11 Feb 2014 05:51:47 GMT

Hi Eric:

My HDMI monitor adopt edid, and My VGA monitor also adopt edid such as dvi.

I will try again.

Thanks!

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