Hans,
 Thank you for the patch. I have verified from the data sheet. 
It might be a copy mistake. It also says the vpif_vsclkdis_reg
can be used to disable and enable in case we make any clock switches
so as to avoid glitches.
In this case I would imagine we would stream off before switching, so
That might not be a necessity.
I have not been able to test this however. Trust you would have.

Acked-by: Manjunath Hadli 
<[email protected]>


Thanks and Regards,
-Manju

On Mon, Nov 14, 2011 at 23:50:49, Hans Verkuil wrote:
> From: Hans Verkuil <[email protected]>
> 
> The function setup_vpif_input_channel_mode() used the VSCLKDIS register 
> instead of VIDCLKCTL. This meant that when in HD mode videoport channel 0 
> used a different clock from channel 1.
> 
> Clearly a copy-and-paste error.
> 
> Signed-off-by: Hans Verkuil <[email protected]>
> ---
>  arch/arm/mach-davinci/board-dm646x-evm.c |    6 +++---
>  1 files changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/arch/arm/mach-davinci/board-dm646x-evm.c 
> b/arch/arm/mach-davinci/board-dm646x-evm.c
> index 337c45e..607a527 100644
> --- a/arch/arm/mach-davinci/board-dm646x-evm.c
> +++ b/arch/arm/mach-davinci/board-dm646x-evm.c
> @@ -563,7 +563,7 @@ static int setup_vpif_input_channel_mode(int mux_mode)
>       int val;
>       u32 value;
>  
> -     if (!vpif_vsclkdis_reg || !cpld_client)
> +     if (!vpif_vidclkctl_reg || !cpld_client)
>               return -ENXIO;
>  
>       val = i2c_smbus_read_byte(cpld_client); @@ -571,7 +571,7 @@ static int 
> setup_vpif_input_channel_mode(int mux_mode)
>               return val;
>  
>       spin_lock_irqsave(&vpif_reg_lock, flags);
> -     value = __raw_readl(vpif_vsclkdis_reg);
> +     value = __raw_readl(vpif_vidclkctl_reg);
>       if (mux_mode) {
>               val &= VPIF_INPUT_TWO_CHANNEL;
>               value |= VIDCH1CLK;
> @@ -579,7 +579,7 @@ static int setup_vpif_input_channel_mode(int mux_mode)
>               val |= VPIF_INPUT_ONE_CHANNEL;
>               value &= ~VIDCH1CLK;
>       }
> -     __raw_writel(value, vpif_vsclkdis_reg);
> +     __raw_writel(value, vpif_vidclkctl_reg);
>       spin_unlock_irqrestore(&vpif_reg_lock, flags);
>  
>       err = i2c_smbus_write_byte(cpld_client, val);
> --
> 1.7.7
> 
> 

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