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devicetree:bindings: add devicetree bindings for Freescale AHCI
adds bindings for Freescale QorIQ AHCI SATA controller. Signed-off-by: Tang Yuantian <Yuantian.Tang@freescale.com> Reviewed-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Tejun Heo <tj@kernel.org>
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Documentation/devicetree/bindings/ata/ahci-fsl-qoriq.txt
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Documentation/devicetree/bindings/ata/ahci-fsl-qoriq.txt
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Binding for Freescale QorIQ AHCI SATA Controller
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Required properties:
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- reg: Physical base address and size of the controller's register area.
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- compatible: Compatibility string. Must be 'fsl,<chip>-ahci', where
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chip could be ls1021a, ls2085a, ls1043a etc.
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- clocks: Input clock specifier. Refer to common clock bindings.
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- interrupts: Interrupt specifier. Refer to interrupt binding.
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Optional properties:
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- dma-coherent: Enable ACHI coherency DMA operation.
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- reg-names: register area names when there are more then 1 regster area.
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Examples:
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sata@3200000 {
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compatible = "fsl,ls1021a-ahci";
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reg = <0x0 0x3200000 0x0 0x10000>;
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interrupts = <GIC_SPI 101 IRQ_TYPE_LEVEL_HIGH>;
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clocks = <&platform_clk 1>;
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dma-coherent;
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};
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