35 lines
1.2 KiB
Plaintext
35 lines
1.2 KiB
Plaintext
# Copyright (c) 2020-2023, NXP
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# SPDX-License-Identifier: Apache-2.0
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config DMA_MCUX_LPC
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bool "MCUX LPC DMAC driver"
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default y
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depends on DT_HAS_NXP_LPC_DMA_ENABLED
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help
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DMA driver for MCUX LPC MCUs.
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if DMA_MCUX_LPC
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config DMA_MCUX_LPC_NUMBER_OF_DESCRIPTORS
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int "Number of DMA descriptors to use"
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default 16
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help
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Each DMA descriptor can be used to transfer (1024*width) bytes of data.
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Increase or decrease this value depending on the max number of data
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transferred by the application.
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config DMA_MCUX_LPC_NUMBER_OF_CHANNELS_ALLOCATED
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int "Number of DMA channels to allocate memory for in driver"
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default 0
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help
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The MCUX LPC DMA driver can save memory by not allocating static data
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depending on this value. So, the application can save some data memory
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space by setting this value to suit its needs. The meaning of the value
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is "total number of unique DMA channels ever expected to be used, maximum
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out of all DMA controllers". A value of 0 (default) means to allocate
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as many channel data structures as the maximum number of DMA channels
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in any DMA controller hardware. About 1 KB per 3-4 channels unused can
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be saved by fine tuning this Kconfig.
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endif # DMA_MCUX_LPC
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