After more investigation, I've found that it's not the panel driver
config that needs to be modified to invert the data polarity, but
the FIMD config.

Add the missing invert-vclk option that is required to get the display
to work correctly.

Signed-off-by: Artur Weber <aweber.ker...@gmail.com>
---
 arch/arm/boot/dts/samsung/exynos4212-tab3.dtsi | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/boot/dts/samsung/exynos4212-tab3.dtsi 
b/arch/arm/boot/dts/samsung/exynos4212-tab3.dtsi
index d7954ff466b4..e5254e32aa8f 100644
--- a/arch/arm/boot/dts/samsung/exynos4212-tab3.dtsi
+++ b/arch/arm/boot/dts/samsung/exynos4212-tab3.dtsi
@@ -434,6 +434,7 @@ &exynos_usbphy {
 };
 
 &fimd {
+       samsung,invert-vclk;
        status = "okay";
 };
 

-- 
2.43.0

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