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Custom board's HDMI bringup with 1280x768 @ 65Hz/1280x768 @ 50Hz 

Question asked by VIJAY R on Mar 9, 2016
Latest reply on Mar 9, 2016 by igorpadykov

Hi freescale,

 

                   My self i am VIjay. I am developing a custom board with reference of sabresd but i am facing below problems.

 

1. EDID for HDMI is not working properly even i config with i2c properly.It showing below message.

 

mxc_hdmi mxc_hdmi: No modes read from edid

mxc_hdmi mxc_hdmi: create default modelist

mxc_hdmi mxc_hdmi: Read EDID again

mxc_hdmi mxc_hdmi: No modes read from edid

mxc_hdmi mxc_hdmi: create default modelist

 

2. Actually i want to connect with the board 1280x768 @ 65Hz but it always config to 640x480@60Hz

& I seen the EDID supportable parameters under /driver/video/mxc/mxc_edid.c(also configured to 1280x720 @ 60Hz ) like below. but display not working.

 

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const struct fb_videomode mxc_cea_mode[64] = {

#if 0

/* #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,

},

#endif 

// Added for GM:08.03.16

/* #4: 1280x720p@59.94/60Hz 16:9 */ // Similar to 1280x768 @ 65Hz resolution

[1] = {

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

},

/* #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, 37108, 114, 38, 15, 4, 124, 3, 0,

FB_VMODE_NONINTERLACED | FB_VMODE_ASPECT_4_3, 0,

},

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

[9] = {

NULL, 60, 1440, 240, 37108, 114, 38, 15, 4, 124, 3, 0,

FB_VMODE_NONINTERLACED | FB_VMODE_ASPECT_16_9, 0,

},

/* #14: 1440x480p@59.94/60Hz 4:3 */

[14] = {

NULL, 60, 1440, 480, 18500, 120, 32, 30, 9, 124, 6, 0,

FB_VMODE_NONINTERLACED | FB_VMODE_ASPECT_4_3, 0,

},

/* #15: 1440x480p@59.94/60Hz 16:9 */

[15] = {

NULL, 60, 1440, 480, 18500, 120, 32, 30, 9, 124, 6, 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,

},

/* #23: 720(1440)x288pH@50Hz 4:3 */

[23] = {

NULL, 50, 1440, 288, 37037, 138, 24, 19, 2, 126, 3, 0,

FB_VMODE_NONINTERLACED | FB_VMODE_ASPECT_4_3, 0,

},

/* #24: 720(1440)x288pH@50Hz 16:9 */

[24] = {

NULL, 50, 1440, 288, 37037, 138, 24, 19, 2, 126, 3, 0,

FB_VMODE_NONINTERLACED | FB_VMODE_ASPECT_16_9, 0,

},

/* #29: 720(1440)x576pH@50Hz 4:3 */

[29] = {

NULL, 50, 1440, 576, 18518, 136, 24, 39, 5, 128, 5, 0,

FB_VMODE_NONINTERLACED | FB_VMODE_ASPECT_4_3, 0,

},

/* #30: 720(1440)x576pH@50Hz 16:9 */

[30] = {

NULL, 50, 1440, 576, 18518, 136, 24, 39, 5, 128, 5, 0,

FB_VMODE_NONINTERLACED | 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,

},

/* #33: 1920x1080p@25Hz */

[33] = {

NULL, 25, 1920, 1080, 13468, 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,

},

/* #34: 1920x1080p@30Hz */

[34] = {

NULL, 30, 1920, 1080, 13468, 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,

},

/* #41: 1280x720p@100Hz 16:9 */

[41] = {

NULL, 100, 1280, 720, 6734, 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

},

/* #47: 1280x720p@119.88/120Hz 16:9 */

[47] = {

NULL, 120, 1280, 720, 6734, 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

},

};

 

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Please give me the solution ASAP.I am eagerly waiting for solution
Thank you.

 

 

 

 

 

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