Re: [PATCH] ARM: dts: da850: specify the maximum bandwidth for tilcdc

[Sekhar Nori]

On Friday 25 November 2016 09:07 PM, Bartosz Golaszewski wrote:
> It has been determined that the maximum resolution supported correctly
> by tilcdc rev1 on da850 SoCs is 800x600@60. Due to memory throughput
> constraints we must filter out higher modes.
> 
> Specify the max-bandwidth property for the display node for
> da850-based boards.
> 
> Signed-off-by: Bartosz Golaszewski <bgolaszewski@xxxxxxxxxxxx>
> ---
>  arch/arm/boot/dts/da850.dtsi | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/arch/arm/boot/dts/da850.dtsi b/arch/arm/boot/dts/da850.dtsi
> index 8e30d9b..9b7c444 100644
> --- a/arch/arm/boot/dts/da850.dtsi
> +++ b/arch/arm/boot/dts/da850.dtsi
> @@ -452,6 +452,7 @@
>  			compatible = "ti,da850-tilcdc";
>  			reg = <0x213000 0x1000>;
>  			interrupts = <52>;
> +			max-bandwidth = <28800000>;

If this is effectively the max pixel clock that the device supports,
then why not use the datasheet specified value of 37.5 MHz (Tc = 26.66 ns).

Thanks,
Sekhar