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IMX6Q parallel display issue in custom board

Question asked by Jackie Chau on Jul 23, 2015
Latest reply on Aug 21, 2015 by Jackie Chau

I have modified the boot arguments as below

setenv bootargs console=ttymxc0,115200 androidboot.console=ttymxc0 consoleblank=0 init=/init video=mxcfb2:dev=lcd,CLAA-WVGA@60,bpp=32,if=RGB24 video=mxcfb1:off video=mxcfb0:off video=mxcfb3:off vmalloc=400M androidboot.hardware=freescale cma=384M mtdparts=gpmi-nand:16m(bootloader),16m(bootimg),16m(recovery),-(root) ubi.mtd=4

and modified a little bit in imx6qdl-sabresd.dtsi

mxcfb3: fb@2 {

        compatible = "fsl,mxc_sdc_fb";

        disp_dev = "lcd";

        interface_pix_fmt = "RGB24";

        mode_str ="CLAA-WVGA";

        default_bpp = <16>;

        int_clk = <0>;

        late_init = <0>;

        status = "disabled";


    lcd@0 {

        compatible = "fsl,lcd";

        ipu_id = <0>;

        disp_id = <0>;

        default_ifmt = "RGB24";

        pinctrl-names = "default";

        pinctrl-0 = <&pinctrl_ipu1_1>;

        status = "okay";


However, no signal is output on VSYNCH, HSYNCH & DISP0_CLK. Please kindly advise. Below is my debug print message, lcdif_probe & lcdif_init have been entered.

mxc_mipi_dsi 21e0000.mipi: i.MX MIPI DSI driver probed

MIPI DSI driver module loaded



mxc_sdc_fb fb.28: Can't get fb option for mxcfb0!

mxc_sdc_fb fb.29: Can't get fb option for mxcfb1!


mxc_sdc_fb fb.30: registered mxc display driver lcd

Console: switching to colour frame buffer device 100x30

mxc_sdc_fb fb.31: Can't get fb option for mxcfb3!

imx-sdma 20ec000.sdma: no iram assigned, using external mem

imx-sdma 20ec000.sdma: loaded firmware 1.1

imx-sdma 20ec000.sdma: initialized

pfuze100-regulator 1-0008: Full lay: 2, Metal lay: 1

pfuze100-regulator 1-0008: FAB: 0, FIN: 0

pfuze100-regulator 1-0008: pfuze100 found.