Hi,
cc: linux-media
Nishanth Menon wrote:
michael said the following on 10/03/2009 06:13 PM:
I'm writing a driver to support the ov7690 camera and I have some
question about the meaning of:
- datalane configuration
CSI2 Data lanes - each CSI2 lane is a differential pair. And, at least 1
clock and data lane is used in devices.
Sorry can you explain a little bit more. I have the camera connected to the
cam_hs and cam_vs and the data is 8Bit. I use the the isp init
structure. The sccb bus works great and I can send configuration to it,
but I don't receive any interrupt from the ics, seems that it doen't see
the transaction:
The ISPCCDC: ###CCDC SYN_MODE=0x31704 seems ok.
static struct isp_interface_config ov7690_if_config = {
.ccdc_par_ser = ISP_CSIA,
.dataline_shift = 0x0,
.hsvs_syncdetect = ISPCTRL_SYNC_DETECT_VSFALL,
.strobe = 0x0,
.prestrobe = 0x0,
.shutter = 0x0,
.wenlog = ISPCCDC_CFG_WENLOG_AND,
.wait_hs_vs = 0x4,
.raw_fmt_in = ISPCCDC_INPUT_FMT_GR_BG,
.u.csi.crc = 0x0,
.u.csi.mode = 0x0,
.u.csi.edge = 0x0,
.u.csi.signalling = 0x0,
.u.csi.strobe_clock_inv = 0x0,
.u.csi.vs_edge = 0x0,
.u.csi.channel = 0x0,
.u.csi.vpclk = 0x1,
.u.csi.data_start = 0x0,
.u.csi.data_size = 0x0,
.u.csi.format = V4L2_PIX_FMT_YUYV,
};
and I don't know the meaning of
lanecfg.clk.pol = OV7690_CSI2_CLOCK_POLARITY;
lanecfg.clk.pos = OV7690_CSI2_CLOCK_LANE;
lanecfg.data[0].pol = OV7690_CSI2_DATA0_POLARITY;
lanecfg.data[0].pos = OV7690_CSI2_DATA0_LANE;
lanecfg.data[1].pol = OV7690_CSI2_DATA1_POLARITY;
lanecfg.data[1].pos = OV7690_CSI2_DATA1_LANE;
lanecfg.data[2].pol = 0;
lanecfg.data[2].pos = 0;
lanecfg.data[3].pol = 0;
lanecfg.data[3].pos = 0;
- phyconfiguration
PHY - Physical timing configurations. btw, if it is camera specific you
could get a lot of inputs from [1].
Ok I wil ask to them.
Regards,
Nishanth Menon
Ref:
[1] http://vger.kernel.org/vger-lists.html#linux-media
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Michael
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