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

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

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wyb0116
Contributor II

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.

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igorpadykov
NXP TechSupport
NXP TechSupport

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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