ov2686 DVP port sometimes greenish capture

[ifzhao]

Dear all,

With JB4.3 IMX6DL, after I make ov2686 working, I find that sometimes the captured image is totally greenish but previewed image good. In both cases, I see into the IPU_CONF/IDMA_CONF and other related settings, but failed to find any difference.

This is the log of failed case, same in good case:

In ov2686:ioctl_g_parm
type is V4L2_BUF_TYPE_VIDEO_CAPTURE
In ov2686:ioctl_s_parm
type is V4L2_BUF_TYPE_VIDEO_CAPTURE
In ov2686:ov2686_init_mode capturemode is 0,mode=0
In ov2686:ioctl_g_ifparm
In ov2686:ioctl_g_fmt_cap.
ipu_csi_init_interface,fmt=1448695129 IPU_PIX_FMT_GENERIC=810897481
ipu_csi_init_interface using yuyv format
ipu_csi_init_interface,width=1600,heigt=1200,pifxfmt=1448695129,sigclck=0
sig.clkmode=0,0x900,1600,1200
imx-ipuv3 imx-ipuv3.0: CSI_SENS_CONF = 0x00000900
imx-ipuv3 imx-ipuv3.0: CSI_ACT_FRM_SIZE = 0x04AF063F
imx-ipuv3 imx-ipuv3.0: init channel = 15
channel=-1066027628,mipi_id=-762757120,csi=0 (null)
csi=0,channel=268435392 _ipu_csi_init
imx-ipuv3 imx-ipuv3.0: IPU_CONF = 0x00000660
imx-ipuv3 imx-ipuv3.0: IDMAC_CONF = 0x0000002F
imx-ipuv3 imx-ipuv3.0: IDMAC_CHA_EN1 = 0x00800000
imx-ipuv3 imx-ipuv3.0: IDMAC_CHA_EN2 = 0x00000000
imx-ipuv3 imx-ipuv3.0: IDMAC_CHA_PRI1 = 0x18800001
imx-ipuv3 imx-ipuv3.0: IDMAC_CHA_PRI2 = 0x00000000
imx-ipuv3 imx-ipuv3.0: IDMAC_BAND_EN1 = 0x00000000
imx-ipuv3 imx-ipuv3.0: IDMAC_BAND_EN2 = 0x00000000
imx-ipuv3 imx-ipuv3.0: IPU_CHA_DB_MODE_SEL0 = 0x00000000
imx-ipuv3 imx-ipuv3.0: IPU_CHA_DB_MODE_SEL1 = 0x00000000
imx-ipuv3 imx-ipuv3.0: IPU_CHA_TRB_MODE_SEL0 = 0x00800000
imx-ipuv3 imx-ipuv3.0: IPU_CHA_TRB_MODE_SEL1 = 0x00000000
imx-ipuv3 imx-ipuv3.0: DMFC_WR_CHAN = 0x00000090
imx-ipuv3 imx-ipuv3.0: DMFC_WR_CHAN_DEF = 0x202020F6
imx-ipuv3 imx-ipuv3.0: DMFC_DP_CHAN = 0x000096D4
imx-ipuv3 imx-ipuv3.0: DMFC_DP_CHAN_DEF = 0x2020F6F6
imx-ipuv3 imx-ipuv3.0: DMFC_IC_CTRL = 0x00000002
imx-ipuv3 imx-ipuv3.0: IPU_FS_PROC_FLOW1 = 0x00000000
imx-ipuv3 imx-ipuv3.0: IPU_FS_PROC_FLOW2 = 0x00000000
imx-ipuv3 imx-ipuv3.0: IPU_FS_PROC_FLOW3 = 0x00000000
imx-ipuv3 imx-ipuv3.0: IPU_FS_DISP_FLOW1 = 0x00000000
imx-ipuv3 imx-ipuv3.0: IPU_VDIC_VDI_FSIZE = 0x00000000
imx-ipuv3 imx-ipuv3.0: IPU_VDIC_VDI_C = 0x00000000
imx-ipuv3 imx-ipuv3.0: IPU_IC_CONF = 0x00000000
imx-ipuv3 imx-ipuv3.0: CSI_SENS_CONF = 0x00000A00
imx-ipuv3 imx-ipuv3.0: IPU_INT_STAT1 = 0x00000000
imx-ipuv3 imx-ipuv3.0: initializing idma ch 0 @ d28c0000
imx-ipuv3 imx-ipuv3.0: ch 0 word 0 - 00000000 EA600000 00000000 E0000000 0012BCC7
imx-ipuv3 imx-ipuv3.0: ch 0 word 1 - 03D00000 007A0000 0087C000 00018FC0 0000063F
imx-ipuv3 imx-ipuv3.0: PFS 0x4,
imx-ipuv3 imx-ipuv3.0: BPP 0x0,
imx-ipuv3 imx-ipuv3.0: NPB 0x1f
imx-ipuv3 imx-ipuv3.0: FW 1599,
imx-ipuv3 imx-ipuv3.0: FH 1199,
imx-ipuv3 imx-ipuv3.0: EBA0 0x1e800000
imx-ipuv3 imx-ipuv3.0: EBA1 0x1e800000
imx-ipuv3 imx-ipuv3.0: Stride 1599
imx-ipuv3 imx-ipuv3.0: scan_order 0
imx-ipuv3 imx-ipuv3.0: uv_stride 1599
imx-ipuv3 imx-ipuv3.0: u_offset 0x1d4c00
imx-ipuv3 imx-ipuv3.0: v_offset 0x0
imx-ipuv3 imx-ipuv3.0: Width0 0+1,
imx-ipuv3 imx-ipuv3.0: Width1 0+1,
imx-ipuv3 imx-ipuv3.0: Width2 0+1,
imx-ipuv3 imx-ipuv3.0: Width3 0+1,
imx-ipuv3 imx-ipuv3.0: Offset0 31,
imx-ipuv3 imx-ipuv3.0: Offset1 17,
imx-ipuv3 imx-ipuv3.0: Offset2 1,
imx-ipuv3 imx-ipuv3.0: Offset3 0
imx-ipuv3 imx-ipuv3.0: IPU Warning - IPU_INT_STAT_5 = 0x00000001
_ipu_csi_wait4eof channel=268435392

[igorpadykov]

Hi If

could you check is setting kernel boot parameter dmfc=3

or lower sensor resolution helps .

Best regards
igor
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[ifzhao]

Dear Igor,

   Thanks for your reply. However, it does not work. What's more, the preview resolution is the same with capture resolution. And it just happens to be greenish sometimes.