[U-Boot] [PATCH] video: ipu_disp: Fix clock polarity logic

Eric Nelson
2013-10-29T23:03:30Z

Thanks Fabio,

On 10/29/2013 10:46 AM, Fabio Estevam wrote:
> Currently the HDMI splash screen image quality on mx6solo does not show a
> very stable image.
>
> By comparing the IPU driver from U-boot with the one from FSL 4.1.0 BSP,
> we can see that there is an inverted logic for setting the DI_GEN_POL_CLK bit.
>
> From FSL BSP [1] we have:
>
> if (!sig.clk_pol)
> di_gen |= DI_GEN_POLARITY_DISP_CLK;
>
> Applying the same logic into U-boot fixes the HDMI image stability.
>

It's odd that this doesn't appear to change things for the i.MX6DQ,
but it works on either one, so

Tested-by: Eric Nelson <eric.nelson@boundarydevices.com>
Acked-by: Eric Nelson <eric.nelson@boundarydevices.com>