video: ipu_disp: Fix clock polarity logic
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. [1] git.freescale.com/git/cgit.cgi/imx/linux-2.6-imx.git/tree/drivers/mxc/ipu3/ipu_disp.c?h=imx_3.0.35_4.1.0 Signed-off-by: NFabio Estevam <fabio.estevam@freescale.com> Tested-by: NEric Nelson <eric.nelson@boundarydevices.com> Acked-by: NEric Nelson <eric.nelson@boundarydevices.com> Acked-by: NStefano Babic <sbabic@denx.de>
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