forked from Minki/linux
e13c118075
Add a binding document for Imagination Technologies I2S input controller Signed-off-by: Damien.Horsley <Damien.Horsley@imgtec.com> Signed-off-by: Mark Brown <broonie@kernel.org>
48 lines
1.3 KiB
Plaintext
48 lines
1.3 KiB
Plaintext
Imagination Technologies I2S Input Controller
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Required Properties:
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- compatible : Compatible list, must contain "img,i2s-in"
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- #sound-dai-cells : Must be equal to 0
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- reg : Offset and length of the register set for the device
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- clocks : Contains an entry for each entry in clock-names
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- clock-names : Must include the following entry:
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"sys" The system clock
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- dmas: Contains an entry for each entry in dma-names.
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- dma-names: Must include the following entry:
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"rx" Single DMA channel used by all active I2S channels
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- img,i2s-channels : Number of I2S channels instantiated in the I2S in block
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Optional Properties:
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- interrupts : Contains the I2S in interrupts. Depending on
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the configuration, there may be no interrupts, one interrupt,
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or an interrupt per I2S channel. For the case where there is
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one interrupt per channel, the interrupts should be listed
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in ascending channel order
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- resets: Contains a phandle to the I2S in reset signal
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- reset-names: Contains the reset signal name "rst"
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Example:
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i2s_in: i2s-in@18100800 {
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compatible = "img,i2s-in";
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reg = <0x18100800 0x200>;
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interrupts = <GIC_SHARED 7 IRQ_TYPE_LEVEL_HIGH>;
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dmas = <&mdc 30 0xffffffff 0>;
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dma-names = "rx";
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clocks = <&cr_periph SYS_CLK_I2S_IN>;
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clock-names = "sys";
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img,i2s-channels = <6>;
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#sound-dai-cells = <0>;
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};
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