> -----Original Message----- > From: linux-omap-owner@xxxxxxxxxxxxxxx [mailto:linux-omap- > owner@xxxxxxxxxxxxxxx] On Behalf Of matthias schwarz > Sent: Monday, July 27, 2009 7:47 AM > To: linux-omap@xxxxxxxxxxxxxxx > Subject: Camera Interface VS/HS Issue > > Hi there, > > i just recently ran into a problem when trying to let the ISP > (OMAP3530) generate HS/VS signals in SYNC mode. > I am building a module to do so. > > It basically enables the three clocks (cam_ick, cam_mclk and > csi2_96m_fck), > then sets > > ISPCCDC_PIX_LINES_PPLN > ISPCCDC_PIX_LINES_HLPRF > ISPCCDC_HD_VD_WID_VDW > ISPCCDC_HD_VD_WID_HDW > ISPCCDC_SYN_MODE_VDHDEN > ISPCCDC_SYN_MODE_VDHDOUT > ISPCCDC_CFG_VDLC > ISPTCTRL_CTRL_DIVA > ISPTCTRL_CTRL_DIVB > ISPCCDC_PCR > > via some calls to ioremap and ioread32/iowrite32. > My question now is the following: > when i hook an oscilloscope to the corresponding pins (CAM_VS, CAM_HS, > CAM_XCLKA) i can see that only the CAM_XCLKA is working correctly, > also at the configured frequency. > Both, CAM_VS and CAM_HS remain at low voltage all the time, even when > i switch their polarities (ISPCCDC_SYN_MODE_VDPOL, > ISPCCDC_SYN_MODE_HDPOL) that behavior does not change and signals > always remain at low voltage. > > Could someone help me out, or give me a hint what i might be missing > to generate those output signals correctly? Matthias, Can you please provide a register dump of the above values? Looks like you're touching the adequate registers though... But I can help you more looking at the values. Regards, Sergio > > Thank you very much, > Matthias > -- > To unsubscribe from this list: send the line "unsubscribe linux-omap" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
