Messages in this thread | | | Subject | Re: [PATCH] drm/sun4i: fix HSYNC and VSYNC polarity | From | Giulio Benetti <> | Date | Thu, 13 Dec 2018 12:42:29 +0100 |
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Hi Jonathan,
Il 13/12/2018 03:55, Jonathan Liu ha scritto: >> Can you precisely point me the sources of: >> - u-boot >> - kernel >> - dts >> >> you're using? >> >> Thanks > > U-Boot - git tag v2017.03 > Linux - git tag v4.19.6 > DTS - see device tree changes in > https://github.com/net147/linux/tree/sun7i-drm-wip but change the > compatible to "innolux,at070tn92"
With Linux v4.19.6 "innolux,at070tn92" doesn't even work and I suspect it is because of clock frequency tolerance check for pll setting, so it gets discarded from drm resulting in not having a crtc.
Anyway I've just re-checked the signals using another display: "innolux,at043tn24" that has a more rounded clock frequency, so it's accepted by drm and **signals are correct**. Unfortunately I don't have your same display here to test, so I can't help you about that precise panel.
Sorry. Best regards -- Giulio Benetti CTO
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