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[Bug 797491] Re: overo lcd43 touchscreen does not work

To: tiomap-dev@xxxxxxxxxxxxxxxxxxx
From: Linus Walleij <797491@xxxxxxxxxxxxxxxxxx>
Date: Mon, 16 Sep 2013 19:32:10 -0000
Reply-to: Bug 797491 <797491@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx

** Project changed: linux-linaro => linaro-landing-team-ti

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https://bugs.launchpad.net/bugs/797491

Title:
  overo lcd43 touchscreen does not work

Status in Linaro Texas Instruments Landing Team:
  New
Status in “linux-linaro-omap” package in Ubuntu:
  Confirmed

Bug description:
  confirmed on two kernels:
    linaro 2.6.38 shipped in the 11.05 release 
    current 2.6.38 tip: 5983da7 Merge branch 'beagle-fixes' of git://kernel.ubuntu.com/rsalveti/linux-li

  There are two DRM issues:

  1) A device like Overo's lcd43 display (Samsung LTE430WQ-F0C panel)
  does not support EDID probing via i2c. The DRM related code tried to
  account for this but did so incorrectly.

  2) The drm_mode_vrefresh function in drivers/gpu/drm/drm_modes.c is
  returning a value of 59 rather than 60 which causes the code to think
  the one supported more for this panel is incorrectly configured.

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