On Sat, Sep 06, 2014 at 06:47:27PM +0800, Chen-Yu Tsai wrote: > The DMA controller requires AHB1 bus clock to be clocked from PLL6. > > Signed-off-by: Chen-Yu Tsai <wens@xxxxxxxx> > --- > 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 8eb2c6d..1117989 100644 > --- a/arch/arm/boot/dts/sun6i-a31.dtsi > +++ b/arch/arm/boot/dts/sun6i-a31.dtsi > @@ -317,6 +317,11 @@ > 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>; > + assigned-clock-rates = <200000000>; Where did you get that from? The user manual says that it should be clocked at 600MHz, and I'm not sure it should be enforced there either. Thanks! Maxime -- Maxime Ripard, Free Electrons Embedded Linux, Kernel and Android engineering http://free-electrons.com
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