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RG350M panel glitch fix proposal #7

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wants to merge 11 commits into from
Closed

RG350M panel glitch fix proposal #7

wants to merge 11 commits into from

Commits on Oct 19, 2020

  1. RG350M panel glitch fix proposal 

    When this panel is reset twice in a row, in very rapid succession like it's the case when starting/closing an app, the official specification of 5ms after releasing RESX isn't enough to ensure proper function.

Increasing usleep_range(5000, 20000) to (13000, 20000) is not enough to keep the glitch away, but (15000, 20000) is.

Given this time spent since pin release can be deduced from the msleep() that follows (also 7ms are spent writing regs) my suggestion is to go large (and account for possible chipsets tolerances variations)
and use usleep_range(20000, 30000), then 7ms of regs write follow, then we can use msleep(95) and all works fine.

To be in line with what the documentation recommends, I have replaced msleep(100) with msleep(95) placed *before* the sleep_out call, as the manual stipulates that
"It is necessary to wait 5msec after releasing RESX before sending commands. Also Sleep Out command cannot be sent for 120 msec."

Signed-off-by: Christophe Branchereau <[email protected]>
    @citral23
    citral23 committed Oct 19, 2020
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Commits on Oct 23, 2020

  1. dt-bindings: vendor-prefixes: Add abt vendor prefix 

    Add prefix for ShenZhen Asia Better Technology Ltd.

Signed-off-by: Paul Cercueil <[email protected]>
    @pcercuei
    pcercuei committed Oct 23, 2020
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  2. media: uapi: Add MEDIA_BUS_FMT_GBR888_3X8 media bus format 

    Add media bus format for 24-bit panels that expect their pixel data to
be sent serially on a 8-bit bus, in GBR ordering.

Signed-off-by: Paul Cercueil <[email protected]>
    @pcercuei
    pcercuei committed Oct 23, 2020
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  3. drm/panel: Add ABT Y030XX067A 3.0" 320x480 panel 

    Add support for the ShenZhen Asia Better Technology Ltd. Y030XX067A 3.0"
320x480 IPS panel.

This panel can be found in the YLM RG-280M, RG-300 and RG-99 handheld
gaming consoles.

Signed-off-by: Paul Cercueil <[email protected]>
Signed-off-by: Christophe Branchereau <[email protected]>
    @pcercuei
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  4. drm/ingenic: Simplify computation of vt/ht 

    Signed-off-by: Paul Cercueil <[email protected]>
    @pcercuei
    pcercuei committed Oct 23, 2020
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  5. drm/ingenic: Compute timings according to mode->crtc_* 

    Signed-off-by: Paul Cercueil <[email protected]>
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  6. drm/ingenic: Properly compute timings when using a 3x8-bit panel 

    Signed-off-by: Paul Cercueil <[email protected]>
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  7. 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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  8. MIPS: ingenic: Add support for the YLM RG-280M 

    Add support for the YLM RG-280M, 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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  9. drm/panel: y030xx067a: Add 50 Hz mode 

    Signed-off-by: Paul Cercueil <[email protected]>
    @pcercuei
    pcercuei committed Oct 23, 2020
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Commits on Oct 24, 2020

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

    … jz-5.9
    @citral23
    citral23 committed Oct 24, 2020
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