Debug steps for customer MIPI sensor分析和总结必威体育精装版分析和总结.docx

DataFlow:

DebugstepsforcustomerMIPIsensor

CustomerMIPIsensor?MIPICSI2?IPU1CSI0?Memory

Debugsteps:

Checkthesetting

MakesureiftheGPIO/IOMUXsettingsaresetcorrectlyaccordingtoboarddesign.

MakesureIMOUXGPRregisterissetcorrectly:Tips:

MX6DQ:

IPU0-CSI0:canbeconnectedtoparallelinterface(GPR1bit19is1)ortomipi-csi2virtualchannel0(GPR1bit19is0).

IPU0-CSI1:canonlybeconnectedtomipi-csi2virtualchannel1.IPU1-CSI0:canonlybeconnectedtomipi-csi2virtualchannel2.

IPU1-CSI1:canbeconnectedtoparallelinterface(GPR1bit20is1)ortomipi-csi2virtualchannel3(GPR1bit20is0).

MX6DL:

IPU-CSI0:

GPR13bit0-2 connection

mipi-csi2virtualchannel0

mipi-csi2virtualchannel1

mipi-csi2virtualchannel2

mipi-csi2virtualchannel3

100 parallelinterface

IPU-CSI1:

GPR13bit3-5 connection

mipi-csi2virtualchannel0

mipi-csi2virtualchannel1

mipi-csi2virtualchannel2

mipi-csi2virtualchannel3

100 parallelinterface

CheckeveryregisterofMIPICSI-2withMIPI_CSI_N_LANES~MIPI_CSI_DATA_IDS_2.

Tips:

Inov5640_mipicase(2datalanesareused),thecorrectMIPI_CSI_PHY_STATEis0x330(andthebit11isjumpingbetween0and1,thevalueisjumpbetween0x330and0x300.

MIPI_CSI_ERR1/2shouldbeboth0,whichmeansthereisnoerrorhappens.Andiftheyarenone0,pleasecheckRMwhichtheerrorbitmeans.Anditwouldhelpyoutodeterminewheretheproblemexists.

ChecksomeIPUsettingiscorrectlyaccordingtotheRM

IPU_CONF:checkifyourenabledCSI?IPUx_INT_STAT_1:checkifgeteofforCSIchannel?IPUx_CSI0_DI:

IPUx_CSI0_SENS_CONF:IPUx_CSI0_SENS_FRM_SIZE:IPUx_CSI0_ACT_FRM_SIZE:

Tips:

Makesureifalltheregistersaresetasyouwish.Checkthesettingswithi.MX6RMonebitbyonebit.Thisisamuststep.

Checkthestateregisters.Suchas,IPUx_INT_STAT_1checkiftheCSIinputidmachas

goteof.Ifitis0,itmeansIPUdidn’tgetyoursignal.Weshouldcheckfromthep

place,thatisMIPICSI-2orsvt0