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zephyr/drivers/dma/Kconfig.mcux_lpc

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drivers: dma_mcux: Add support for big data transfers 1. Transfers are not limited by XFERCOUNT transfer length of LPC DMA descriptor. Added code to handle block sizes greater than XFERCOUNT. 2. Use the reload_en flag to decide if we should setup a circular descriptor chain. 3. Improve handling of source and destination width. 4. Number of DMA descriptors are defined by a Kconfig value. 5. Changed the dma_reload function to handle transfers greater than XFERCOUNT. Signed-off-by: Mahesh Mahadevan <mahesh.mahadevan@nxp.com>
2023-04-29 09:55:20 +08:00
# Copyright (c) 2020-2023, NXP
MXRT600: Add DMA support Add DMA support for MCUX LPC SoC's Signed-off-by: Mahesh Mahadevan <mahesh.mahadevan@nxp.com>
2020-08-15 05:02:38 +08:00
# SPDX-License-Identifier: Apache-2.0
config DMA_MCUX_LPC
kconfig: remove Enable from boolean prompts According to Kconfig guidelines, boolean prompts must not start with "Enable...". The following command has been used to automate the changes in this patch: sed -i "s/bool \"[Ee]nables\? \(\w\)/bool \"\U\1/g" **/Kconfig* Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
2022-03-09 19:05:12 +08:00
bool "MCUX LPC DMAC driver"
drivers: dma: Update drivers to use devicetree Kconfig symbol Update DMA drivers to use DT_HAS_<compat>_ENABLED Kconfig symbol to expose the driver and enable it by default based on devicetree. We remove 'depend on' Kconfig for symbols that would be implied by the devicetree node existing. Signed-off-by: Kumar Gala <galak@kernel.org>
2022-08-25 03:30:39 +08:00
default y
depends on DT_HAS_NXP_LPC_DMA_ENABLED
MXRT600: Add DMA support Add DMA support for MCUX LPC SoC's Signed-off-by: Mahesh Mahadevan <mahesh.mahadevan@nxp.com>
2020-08-15 05:02:38 +08:00
help
DMA driver for MCUX LPC MCUs.
if DMA_MCUX_LPC
drivers: dma_mcux_lpc: Add Kconfig to reduce data Add a Kconfig to have the ability to fine tune the amount of RAM that the driver uses based on the number of channels expected to be used. Most of the code is already there but just need this Kconfig to get the benefit of it by reducing the size of the statically created arrays. Also change the number of channels field in the configuration to a byte instead of a 32 bit integer because that should be sufficient to describe the number of DMA channels. Rename LPC DMA Driver Kconfigs with namespace to MCUX_LPC Signed-off-by: Declan Snyder <declan.snyder@nxp.com>
2023-07-13 02:06:14 +08:00
config DMA_MCUX_LPC_NUMBER_OF_DESCRIPTORS
drivers: dma_mcux: Add support for big data transfers 1. Transfers are not limited by XFERCOUNT transfer length of LPC DMA descriptor. Added code to handle block sizes greater than XFERCOUNT. 2. Use the reload_en flag to decide if we should setup a circular descriptor chain. 3. Improve handling of source and destination width. 4. Number of DMA descriptors are defined by a Kconfig value. 5. Changed the dma_reload function to handle transfers greater than XFERCOUNT. Signed-off-by: Mahesh Mahadevan <mahesh.mahadevan@nxp.com>
2023-04-29 09:55:20 +08:00
int "Number of DMA descriptors to use"
default 16
MXRT600: Add DMA support Add DMA support for MCUX LPC SoC's Signed-off-by: Mahesh Mahadevan <mahesh.mahadevan@nxp.com>
2020-08-15 05:02:38 +08:00
help
drivers: dma_mcux: Add support for big data transfers 1. Transfers are not limited by XFERCOUNT transfer length of LPC DMA descriptor. Added code to handle block sizes greater than XFERCOUNT. 2. Use the reload_en flag to decide if we should setup a circular descriptor chain. 3. Improve handling of source and destination width. 4. Number of DMA descriptors are defined by a Kconfig value. 5. Changed the dma_reload function to handle transfers greater than XFERCOUNT. Signed-off-by: Mahesh Mahadevan <mahesh.mahadevan@nxp.com>
2023-04-29 09:55:20 +08:00
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.
MXRT600: Add DMA support Add DMA support for MCUX LPC SoC's Signed-off-by: Mahesh Mahadevan <mahesh.mahadevan@nxp.com>
2020-08-15 05:02:38 +08:00
drivers: dma_mcux_lpc: Add Kconfig to reduce data Add a Kconfig to have the ability to fine tune the amount of RAM that the driver uses based on the number of channels expected to be used. Most of the code is already there but just need this Kconfig to get the benefit of it by reducing the size of the statically created arrays. Also change the number of channels field in the configuration to a byte instead of a 32 bit integer because that should be sufficient to describe the number of DMA channels. Rename LPC DMA Driver Kconfigs with namespace to MCUX_LPC Signed-off-by: Declan Snyder <declan.snyder@nxp.com>
2023-07-13 02:06:14 +08:00
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.
MXRT600: Add DMA support Add DMA support for MCUX LPC SoC's Signed-off-by: Mahesh Mahadevan <mahesh.mahadevan@nxp.com>
2020-08-15 05:02:38 +08:00
endif # DMA_MCUX_LPC