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