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RG280M (and possibly other devices) panel driver settings #8

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RG280M (and possibly other devices) panel driver settings #8

wants to merge 16 commits into from

Commits on Oct 5, 2020

  1. drm/panel: Add Sharp Y030XX067A 3.0" 320x480 panel 

    Signed-off-by: Paul Cercueil <[email protected]>
    @pcercuei
    pcercuei committed Oct 5, 2020
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Commits on Oct 19, 2020

  1. RG280M (and possibly other devices) panel driver settings 

    This panel has its subpixels in delta arrangement fed by a serial bus. A built-in filter can be used to make it perform as a standard RGB device (PIXELCOLORWIRE)

The formula to find the right timings and get a perfect 60Hz is (320+(x/3))*(480+y)*3*Hz=PixelClock. Thus we can use htotal=485, vtotal=640 and a pixel clock of 43,2MHz to get a perfect 60Hz refresh.

It presents a challenge, as if everything is set up as it should in theory, the last blue subpixel vertical line does not light up on the right side of the screen.

A workaround is to send GBR (via a reg_map in the ingenic drm driver) and offset HPOSITION by -1, that covers the last subpixel but that code will need to be conditioned, which pcercuei said he will do.

Signed-off-by: Christophe Branchereau <[email protected]>
    @citral23
    citral23 committed Oct 19, 2020
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Commits on Oct 20, 2020

  1. RG280M (and possibly other devices) panel driver settings 

    This panel has its subpixels in delta arrangement fed by a serial bus. A built-in filter can be used to make it perform as a standard RGB device (PIXELCOLORWIRE)

The formula to find the right timings and get a perfect 60Hz is `(320+(x/3))*(480+y)*3*Hz=PixelClock`. Thus we can use htotal=485, vtotal=640 and a pixel clock of 43,2MHz to get a perfect 60Hz refresh.

It presents a challenge, as if everything is set up as it should in theory, the last blue subpixel vertical line does not light up on the right side of the screen.

A workaround is to send GBR (via a reg_map in the ingenic drm driver) and offset HPOSITION by -1, that covers the last subpixel but that code will need to be conditioned, which pcercuei said he will do.

Signed-off-by: Christophe Branchereau <[email protected]>
    @citral23
    citral23 committed Oct 20, 2020
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  2. Merge branch 'y030xx067a' of github.com:citral23/linux into y030xx067a

    @citral23
    citral23 committed Oct 20, 2020
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  3. media: uapi: Add MEDIA_BUS_FMT_GBR888_3X8 media bus format 

    Signed-off-by: Paul Cercueil <[email protected]>
    @pcercuei
    pcercuei committed Oct 20, 2020
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  4. drm/panel: Add Sharp Y030XX067A 3.0" 320x480 panel 

    Signed-off-by: Paul Cercueil <[email protected]>
    @pcercuei
    pcercuei committed Oct 20, 2020
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  5. drm/ingenic: Simplify computation of vt/ht 

    Signed-off-by: Paul Cercueil <[email protected]>
    @pcercuei
    pcercuei committed Oct 20, 2020
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  6. drm/ingenic: Compute timings according to mode->crtc_* 

    Signed-off-by: Paul Cercueil <[email protected]>
    @pcercuei
    pcercuei committed Oct 20, 2020
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  7. drm/ingenic: Properly compute timings when using a 3x8-bit panel 

    Signed-off-by: Paul Cercueil <[email protected]>
    @pcercuei
    pcercuei committed Oct 20, 2020
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Commits on Oct 23, 2020

  1. drm/ingenic: Add support for serial 8-bit GBR panels 

    Signed-off-by: Paul Cercueil <[email protected]>
    @pcercuei
    pcercuei committed Oct 23, 2020
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  2. MIPS: ingenic: Add support for the YLM RG-280M 

    Add support for the YLM RG-350M, known as the Anbernic RG-280M in the
western world.

The RG-280M is a slightly modified version of the RG-350, with a
different LCD panel (320x480 non-square pixels) and only one analog
stick.

Signed-off-by: Paul Cercueil <[email protected]>
    @pcercuei
    pcercuei committed Oct 23, 2020
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  3. Merge branch 'y030xx067a' of https://github.com/OpenDingux/linux into… 

    … OpenDingux-y030xx067a
    @citral23
    citral23 committed Oct 23, 2020
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  4. Merge branch 'OpenDingux-y030xx067a' into y030xx067a

    @citral23
    citral23 committed Oct 23, 2020
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  5. Better settings for the y030xx067a panel found in the rg280m 

    Compute all hfp/hbp/hsync as x3 based on bus type, and leave hdisplay x1

480x625@54MHz now throws a value out of range, so change it to [email protected]

Signed-off-by: Christophe Branchereau <[email protected]>
    @citral23
    citral23 committed Oct 23, 2020
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  6. Ingenic Driver : simplification of ht/vt computation 

    Signed-off-by: Christophe Branchereau <[email protected]>
    @citral23
    citral23 committed Oct 23, 2020
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Commits on Oct 24, 2020

  1. Merge branch 'y030xx067a' of https://github.com/OpenDingux/linux into… 

    … y030xx067a
    @citral23
    citral23 committed Oct 24, 2020
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