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From: Anatolij Gustschin <agust@denx.de>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH] video: ipu_disp: Fix clock polarity logic
Date: Wed, 30 Oct 2013 10:07:49 +0100	[thread overview]
Message-ID: <20131030100749.4d0fac4f@crub> (raw)
In-Reply-To: <1383068781-9299-1-git-send-email-fabio.estevam@freescale.com>

On Tue, 29 Oct 2013 15:46:21 -0200
Fabio Estevam <fabio.estevam@freescale.com> 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.
> 
> [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: Fabio Estevam <fabio.estevam@freescale.com>
> ---
>  drivers/video/ipu_disp.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

applied to u-boot-video/master.

Thanks,

Anatolij

      parent reply	other threads:[~2013-10-30  9:07 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-10-29 17:46 [U-Boot] [PATCH] video: ipu_disp: Fix clock polarity logic Fabio Estevam
2013-10-29 23:03 ` Eric Nelson
2013-10-30  8:59 ` Stefano Babic
2013-10-30  9:07 ` Anatolij Gustschin [this message]

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