[PATCH 6/7] ARM: dts: sun6i: Add required ahb1 clock parent and rates for dma controller
From: Maxime Ripard <hidden>
Date: 2014-09-11 21:15:31
Also in:
linux-devicetree
On Sat, Sep 06, 2014 at 06:47:27PM +0800, Chen-Yu Tsai wrote:
quoted hunk
The DMA controller requires AHB1 bus clock to be clocked from PLL6. Signed-off-by: Chen-Yu Tsai <redacted> --- 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 -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 819 bytes Desc: Digital signature URL: <http://lists.infradead.org/pipermail/linux-arm-kernel/attachments/20140911/fb780bb6/attachment.sig>