We want 720P output on imx6Q platform , but met output issue .our platform ENV:
1. kernel 4.1.15 +manual path "L3.14.52_1.1.0_GA_bt656_output_patch".
we check the ITU-R BT1120 document and progressive scan like as bellow:
and we check the function code _ipu_dc_setup_bt656_progressive in Ipu_disp.c, we found that :
when send blank video on I-frame . it send whole line (bt656_v_start_width+bt656_v_end_width) by _ipu_dc_write_tmpl(ipu, microcode_addr, BMA, loop_frame_blank_line_times, 0, 0, 0, 0, 0, 0, 0);
we can't control the bank line (L2-L1) and (L6-L5), it is different on 720P and 1080P.
Did you verify these code yet ? Kindly please give us advice or give me more information about these ,we requried question at several days ago at
where did you get this patch? from the link as below? what detailed patch name you use? is it"0001-Support-BT656-and-BT1120-output-for-iMX6-ipuv3.patch"?
what do you mean if we verify these code? yes, these codes are tested and verified by AE team, but you couldn't use 3.14.52 patch on the 4.1.15 directly, customer needs to change something according to the new kernel.
and this patch is for NTSC and PAL, 1080i as demo, if you need to 720P, you also need to change.
And I noticed that you said "and this patch is for NTSC and PAL, 1080i as demo, if you need to 720P, you also need to change."
So if we need to 720P,what kind of change should be make?Can you give more detail about this?Thanks a lot!