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dts: bindings: dma controller supports mem2mem transfer

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This checks if the DMA controller supports or not
the memory-to-memory transfers. For DMA Version1,
in the stm32f2xx, stm32f4xx, stm32f7xx series,
only DMA instance 2 is able to transfer mem-to-mem.
For other series, with DMA Version2, there is no such a limitation.

Signed-off-by: Francois Ramu <francois.ramu@st.com>
This commit is contained in:
Francois Ramu 2020-01-24 12:04:01 +01:00 • committed by Kumar Gala
commit 82799d2ae4
7 changed files with 3 additions and 7 deletions
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dts/arm/st/f0/stm32f0.dtsi
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@ -317,7 +317,6 @@
reg = <0x40020000 0x400>;
clocks = <&rcc STM32_CLOCK_BUS_AHB1 0x1>;
interrupts = <9 0 10 0 10 0 11 0 11 0>;
st,mem2mem;
status = "disabled";
label = "DMA_1";
};