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How can bpp=8 be supported in i.MX 6 solo processor?

Question asked by jin ming on Apr 24, 2014
Latest reply on Jul 3, 2014 by Yixing Kong

Currently, I am using LTIB L3.0.35_4.1.0_130816_source.tar based on Linux 3.0.35 and expecting to use bpp=8 via HDMI available on the board (i.MX6 processor). The following u-boot parameters are configured.

      setenv bootargs console=ttymxc0,115200 nosmp video=mxcfb0:dev=hdmi,640x480M@60,bpp=8

      But the linux kernel reports the following information:

      mxc_sdc_fb mxc_sdc_fb.0: cannot get pixel format

      mxc_sdc_fb mxc_sdc_fb.0: cannot get pixel format

      mxc_sdc_fb mxc_sdc_fb.0: cannot get pixel format

       imx-ipuv3 imx-ipuv3.0: mxc ipu: unimplemented pixel format

       imx-ipuv3 imx-ipuv3.0: Unsupported burst size 1

       mxc_sdc_fb mxc_sdc_fb.0: cannot get pixel format (output from drivers\video\mxc\mxc_ipuv3_fb.c)

       imx-ipuv3 imx-ipuv3.0: mxc ipu: unimplemented pixel format

      

      It seems that 8bpp pixel format is not supported by the IPUv3 framebuffer currently. Please help me on how to support bpp =8 in it? Is there any patch available for supporting bpp=8?

      Thanks a lot!

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