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LCD doesn't work (fsl,mxc_sdc_fb)

Question asked by Michael Losert on Sep 30, 2015
Latest reply on Oct 1, 2015 by Michael Losert

I'm currently trying to get a LCD display to work on a custom imx6dl.

The fsl,mxc_sdc_fb framebuffer driver is definitely compiled and also loads. But the probe function is never called.

 

/ {

    aliases {

        mxcfb2 = &mxcfb3;

    };

 

    mxcfb3: fb@0 {

        compatible = "fsl,mxc_sdc_fb";

        disp_dev = "lcd";

        interface_pix_fmt = "RGB666";

        default_bpp = <18>;

        int_clk = <0>;

        late_init = <0>;

        status = "okey";

    };

    lcd@0 {

        compatible = "fsl,lcd";

        ipu_id = <0>;

        disp_id = <0>;

        default_ifmt = "RGB666";

        pinctrl-names = "default";

        pinctrl-0 = <&pinctrl_ipu1>;

        status = "okay";

    };

 

....

};

 

...

 

&mxcfb3 {

    status = "okey";

};

 

that's what I have in the device tree.

The LCD is at ipu1_di0_disp0.

I also tried booting with

setenv bootargs "video=mxcfb2:dev=lcd,CLAA-WVGA,if=RGB666 console=${console},115200 root=${mmcroot}";

mxc_sdc_fb creates no output in the kernel log at all while fsl,imx6dl-epdc does.

 

kernel log:

https://paste.debian.net/313932/

 

I know for sure that it can't be an hwardware issue because the display works in u-boot.

I'm forced to use linux-imx (3.14) because it's part of yocto fido (1.8) and I need meta-qt5 support.

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