forked from Minki/linux
5fac0e18bd
With the generic DMA device tree helper supported by mxs-dma driver, client devices only need to call dma_request_slave_channel() for requesting a DMA channel from dmaengine. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Acked-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Reviewed-by: Arnd Bergmann <arnd@arndb.de>
41 lines
1.2 KiB
Plaintext
41 lines
1.2 KiB
Plaintext
* Freescale General-Purpose Media Interface (GPMI)
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The GPMI nand controller provides an interface to control the
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NAND flash chips. We support only one NAND chip now.
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Required properties:
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- compatible : should be "fsl,<chip>-gpmi-nand"
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- reg : should contain registers location and length for gpmi and bch.
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- reg-names: Should contain the reg names "gpmi-nand" and "bch"
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- interrupts : BCH interrupt number.
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- interrupt-names : Should be "bch".
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- dmas: DMA specifier, consisting of a phandle to DMA controller node
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and GPMI DMA channel ID.
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Refer to dma.txt and fsl-mxs-dma.txt for details.
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- dma-names: Must be "rx-tx".
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Optional properties:
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- nand-on-flash-bbt: boolean to enable on flash bbt option if not
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present false
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The device tree may optionally contain sub-nodes describing partitions of the
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address space. See partition.txt for more detail.
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Examples:
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gpmi-nand@8000c000 {
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compatible = "fsl,imx28-gpmi-nand";
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#address-cells = <1>;
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#size-cells = <1>;
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reg = <0x8000c000 2000>, <0x8000a000 2000>;
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reg-names = "gpmi-nand", "bch";
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interrupts = <41>;
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interrupt-names = "bch";
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dmas = <&dma_apbh 4>;
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dma-names = "rx-tx";
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partition@0 {
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...
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};
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};
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