Did imx6q support two channel TV out (BT656 data format)?

[wyb0116]

Did imx6q support two channel TV out (BT656 data format)?

We need have two different  display context TV outputs.

Encode chip is two adv7391.

SIGNAL connections  is like below : 

pinctrl_ipu1_bt656: ipu1grp-4 {
fsl,pins = <
MX6QDL_PAD_EIM_A16__IPU1_DI1_DISP_CLK 0x10
MX6QDL_PAD_EIM_A21__IPU1_DISP1_DATA16 0x10
MX6QDL_PAD_EIM_A22__IPU1_DISP1_DATA17 0x10
MX6QDL_PAD_EIM_A23__IPU1_DISP1_DATA18 0x10
MX6QDL_PAD_EIM_A24__IPU1_DISP1_DATA19 0x10
MX6QDL_PAD_EIM_D31__IPU1_DISP1_DATA20 0x10
MX6QDL_PAD_EIM_D30__IPU1_DISP1_DATA21 0x10
MX6QDL_PAD_EIM_D26__IPU1_DISP1_DATA22 0x10
MX6QDL_PAD_EIM_D27__IPU1_DISP1_DATA23 0x10
>;
};

pinctrl_ipu2_bt656: ipu2grp-4 {
fsl,pins = <
MX6QDL_PAD_DI0_DISP_CLK__IPU2_DI0_DISP_CLK 0x10
MX6QDL_PAD_DISP0_DAT16__IPU2_DISP0_DATA16 0x10
MX6QDL_PAD_DISP0_DAT17__IPU2_DISP0_DATA17 0x10
MX6QDL_PAD_DISP0_DAT18__IPU2_DISP0_DATA18 0x10
MX6QDL_PAD_DISP0_DAT19__IPU2_DISP0_DATA19 0x10
MX6QDL_PAD_DISP0_DAT20__IPU2_DISP0_DATA20 0x10
MX6QDL_PAD_DISP0_DAT21__IPU2_DISP0_DATA21 0x10
MX6QDL_PAD_DISP0_DAT22__IPU2_DISP0_DATA22 0x10
MX6QDL_PAD_DISP0_DAT23__IPU2_DISP0_DATA23 0x10
>;
};

IPU2 TV out is OK.

but IPU1_DISP1 channel did not have anything on data bus and clk.

we reference the  "L3.14.52_1.1.0_GA_bt656_output_patch" from nxp community.

please  give me any suggestion,thanks.

[igorpadykov]

Hi wang

yes imx6q supports two channel BT656 data as it has two identical IPUs.

May be useful to check IPU mux selection which is performed by

IOMUXC_GPR3, IOMUXC_GPR1[IPU_VPU_MUX] -IPU-1/IPU-2 to VPU signals control.
This control selects between IPU-1 and IPU-2. In dts file pay attention to lines like

ipu_id = <0>;
disp_id = <1>;

Best regards
igor
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