topic Re: imx6DL How to make the input std PAL signal full screen display by a/d tp2825 in i.MX Processors

imx6DL How to make the input std PAL signal full screen display by a/d tp2825

liangfeng_0824 — Thu, 23 Feb 2017 08:50:06 GMT

I want to full screen display now，But unsuccessful！How to set up software？

my software settings are as follows：

   p->if_type = V4L2_IF_TYPE_BT656; /* This is the only possibility. */
   p->u.bt656.mode = V4L2_IF_TYPE_BT656_MODE_NOBT_8BIT;
   p->u.bt656.nobt_hs_inv = 0;
   p->u.bt656.bt_sync_correct = 1;     //use gated mode

p->u.bt656.clock_curr = 37000000;

As the pixel after conversion through tp2825 is 960*624，The input of tp2825 A/D is STD CVBS PAL。

Use param below：

Parameters are modified below，The image is displayed as follows：

   {           /*! (B, G, H, I, N) PAL */
   .v4l2_id = V4L2_STD_PAL,
   .name = "PAL",
   .raw_width = 960,
   .raw_height = 624,
   .active_width = 960,
   .active_height = 312,
   .active_top = 0,
   .active_left = 0,
   },

Parameters are modified below，The image is displayed as follows：

{           /*! (B, G, H, I, N) PAL */
   .v4l2_id = V4L2_STD_PAL,
   .name = "PAL",
   .raw_width = 960,
   .raw_height = 624,
   .active_width = 960,
   .active_height = 624-16
   .active_top = 0,
   .active_left = 0,
   },

Re: imx6DL How to make the input std PAL signal full screen display by a/d tp2825

igorpadykov — Sun, 26 Feb 2017 23:13:45 GMT

Hi feng

please try interlaced-mode-capture patch on
https://community.nxp.com/docs/DOC-158531

Best regards
igor
-----------------------------------------------------------------------------------------------------------------------
Note: If this post answers your question, please click the Correct Answer button. Thank you!
-----------------------------------------------------------------------------------------------------------------------

Re: imx6DL How to make the input std PAL signal full screen display by a/d tp2825

liangfeng_0824 — Mon, 27 Feb 2017 04:43:50 GMT

hi igorpadykov：

I am using i.MX6DualLite android6.0.1 now， Please specify that I should use that

The project is more urgent, need your help，tks！

Re: imx6DL How to make the input std PAL signal full screen display by a/d tp2825

liangfeng_0824 — Mon, 27 Feb 2017 04:46:22 GMT

Which patch should I use?

Re: imx6DL How to make the input std PAL signal full screen display by a/d tp2825

liangfeng_0824 — Mon, 27 Feb 2017 04:55:18 GMT

I now use the i.MX6DualLite android6.0.1 kernel software version is ：

Please confirm which patch I should use now？

Re: imx6DL How to make the input std PAL signal full screen display by a/d tp2825

xiaojunye — Fri, 15 Dec 2017 07:13:56 GMT

Hi fengliang,

Do your problems solved? Now i also use tp2825 video decoding. The tp2825 input is 480i cvbs with NTSC,the output is 8 bit bt656. But the video is scrolling . Do you have good problems?