imx-ipuv3 imx-ipuv3.0: DC stop timeout - 0 * 10ms

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imx-ipuv3 imx-ipuv3.0: DC stop timeout - 0 * 10ms

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pfsang
Contributor IV

hi, all

     i  encountered a problem about ipu.

     i'm porting linux on imx6 customized board.

     after power-on , it can display the linux log on lvds panel. it also can play video with gstreamer.

     but after several minutes, it displays nothing and just becomes Black-screen.

     it will show the following message on the console

-------------------------------------------------------------------------------

     imx-ipuv3 imx-ipuv3.0: DC stop timeout - 0 * 10ms

     mxc_ldb mxc_ldb: LDB blank, control reg:0x200

--------------------------------------------------------------------------------

     what's problem with it.?

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qiang_li-mpu_se
NXP Employee
NXP Employee

It is linux timeout to blank screen, you can add "consoleblank=0" in your boot command to avoid such timeout.

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qiang_li-mpu_se
NXP Employee
NXP Employee

It is linux timeout to blank screen, you can add "consoleblank=0" in your boot command to avoid such timeout.

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igorpadykov
NXP TechSupport
NXP TechSupport

Hi fang

"control reg:0x200" means that LDB was reset

and stopped (disabled). Many reasons may cause it:

DDR errors, power supply issues, just errors in software.

I would suggest to start with hardware and check LDB

with SDK (one can run it with jtag)

i.MX 6Series Platform SDK : Bare-metal SDK

Best regards

chip

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pfsang
Contributor IV

hi, chipexpert

       Does "power supply issues" means that pmic will also cause the error?

      and to i.MX 6Series Platform SDK : Bare-metal SDK ,

       how to test it with it ?

      i found the ips_test.c in iMX6_Platform_SDK\sdk\drivers\ipu\test.

      is this test file?

B&R

peter

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igorpadykov
NXP TechSupport
NXP TechSupport

Hi fang

yes pmic also can reset LDB.

For SDK, first please read documentation

included in that package,

Then please create (if necessary) new community thread.

Best regards

chip

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