[PATCH v2 7/7] ARM: dts: sun6i: Add required ahb1 clock parent and rates for dma controller

Maxime Ripard maxime.ripard at free-electrons.com
Tue Sep 30 08:55:33 PDT 2014


On Sat, Sep 27, 2014 at 04:49:55PM +0800, Chen-Yu Tsai wrote:
> The DMA controller requires AHB1 bus clock to be clocked from PLL6.
> 
> Signed-off-by: Chen-Yu Tsai <wens at csie.org>
> ---
>  arch/arm/boot/dts/sun6i-a31.dtsi | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/sun6i-a31.dtsi b/arch/arm/boot/dts/sun6i-a31.dtsi
> index caf879d..d7845d3 100644
> --- a/arch/arm/boot/dts/sun6i-a31.dtsi
> +++ b/arch/arm/boot/dts/sun6i-a31.dtsi
> @@ -353,6 +353,11 @@
>  			clocks = <&ahb1_gates 6>;
>  			resets = <&ahb1_rst 6>;
>  			#dma-cells = <1>;
> +
> +			/* DMA controller requires AHB1 clocked from PLL6 */
> +			assigned-clocks = <&ahb1>;
> +			assigned-clock-parents = <&pll6 0>;
> +			assigned-clock-rates = <200000000>;

Again, I don't think we need the rate change, and that it's the right
place to put it.

Maxime

-- 
Maxime Ripard, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
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