i.mx6+adv7441a问题

iloveembed · 发表于 2013-8-23 18:27:34

我在i.mx6Q上IPU2上的CSI1接ADV7441A，使用16位CSI总线，行同步，场同步，像素时钟，DE信号，
出现如下错误信息：
and run ./mxc_v4l2_tvin.out -ow 100 -oh 100
get below result:
start time = 33 s, 476123 us
ERROR:  v4l2 capture: mxc mxc_v4l_dqueue timeout enc_counter 0
VIDIOC_DQBUF failed.
adv7441a 1-0021: adv7441a:ioctl_s_power.

相关代码如下：
1.
======================================
static iomux_v3_cfg_t mx6q_sabresd_csi1_sensor_pads[]  = {
/* IPU2 tvin  */
   MX6Q_PAD_EIM_DA0__IPU2_CSI1_D_9,
   MX6Q_PAD_EIM_DA1__IPU2_CSI1_D_8,
   MX6Q_PAD_EIM_DA2__IPU2_CSI1_D_7,
   MX6Q_PAD_EIM_DA3__IPU2_CSI1_D_6,
   MX6Q_PAD_EIM_DA4__IPU2_CSI1_D_5,
   MX6Q_PAD_EIM_DA5__IPU2_CSI1_D_4,
   MX6Q_PAD_EIM_DA6__IPU2_CSI1_D_3,
   MX6Q_PAD_EIM_DA7__IPU2_CSI1_D_2,
   MX6Q_PAD_EIM_DA8__IPU2_CSI1_D_1,
   MX6Q_PAD_EIM_DA9__IPU2_CSI1_D_0,
   MX6Q_PAD_EIM_EB2__IPU2_CSI1_D_19,
   MX6Q_PAD_EIM_D16__IPU2_CSI1_D_18,
   MX6Q_PAD_EIM_D18__IPU2_CSI1_D_17,
   MX6Q_PAD_EIM_D19__IPU2_CSI1_D_16,
   MX6Q_PAD_EIM_D20__IPU2_CSI1_D_15,
   MX6Q_PAD_EIM_D26__IPU2_CSI1_D_14,
   MX6Q_PAD_EIM_D27__IPU2_CSI1_D_13,
   MX6Q_PAD_EIM_D28__IPU2_CSI1_D_12,
   MX6Q_PAD_EIM_D21__IPU2_CSI1_D_11,
   MX6Q_PAD_EIM_D22__IPU2_CSI1_D_10,
   MX6Q_PAD_EIM_D23__IPU2_CSI1_DATA_EN,
     MX6Q_PAD_EIM_D17__IPU2_CSI1_PIXCLK,
MX6Q_PAD_EIM_EB3__IPU2_CSI1_HSYNC,
MX6Q_PAD_EIM_D29__IPU2_CSI1_VSYNC,
MX6Q_PAD_EIM_D30__GPIO_3_30,          /* adc int  */
   MX6Q_PAD_EIM_D31__GPIO_3_31,          /* tvin reset , low  */

};
=====================================
2.
=====================================
static struct fsl_mxc_capture_platform_data  capture_data[] = {
   {
.csi = 1,
.ipu = 1,
.mclk_source = 0,
.is_mipi = 0,
}, {
     .csi = 0,
.ipu =  0,
.mclk_source =  0,
.is_mipi =  0,
},
};
=====================================
3.
=====================================
static void mx6q_csi1_io_init(void)
{
   mxc_iomux_v3_setup_multiple_pads(mx6q_sabresd_csi1_sensor_pads,
   ARRAY_SIZE(mx6q_sabresd_csi1_sensor_pads));

/* tvin reset */
gpio_request(SABRESD_TVIN_REST,  "tvin-rest");
   gpio_direction_output(SABRESD_TVIN_REST, 1);
gpio_direction_output(SABRESD_TVIN_REST,  0);
msleep(10);
gpio_direction_output(SABRESD_TVIN_REST,  1);

/* For  MX6Q:
* GPR1 bit19 and bit20  meaning:
* Bit19:     0 -  Enable mipi to IPU1 CSI0
    *                    virtual channel is fixed to 0
*            1 - Enable parallel interface to  IPU1 CSI0
* Bit20:     0 -  Enable mipi to IPU2 CSI1
    *                    virtual channel is fixed to 3
*            1 - Enable parallel interface to  IPU2 CSI1
* IPU1 CSI1 directly  connect to mipi csi2,
*       virtual channel is fixed to 1
*  IPU2 CSI0 directly connect to mipi csi2,
*    virtual channel is fixed to  2
*
* For MX6DL:
* GPR13 bit 0-2 IPU_CSI0_MUX
* 000 MIPI_CSI0
* 100 IPU CSI0
*/
   if (cpu_is_mx6q())
   mxc_iomux_set_gpr_register(1, 20, 1, 1);
else if (cpu_is_mx6dl())
mxc_iomux_set_gpr_register(13, 0, 3,  4);
}
================================

我需要如何设置i.mx6里面CSI相关的寄存器，
比如说CSI0 Sensor Configuration Register(IPUx_CSI0_SENS_CONF)
里面有YUV422 (YUYV...)还是YUV422 (UYVY...)？
  BT.1120 DDR还是BT.1120 SDP？progressive还是interlaced mode？
  Pixel clock input是pixel clock is directly applied to internal circuitry还是pixel clock is inverted before applied to internal circuitry
等等。
ADV7441A输出波形如下，我需要如何设置i.mx6
时钟与数据.jpg