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drivers: dma: Introduce driver for NXP's eDMA IP #65671

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merged 2 commits into from
Jan 23, 2024
Merged

drivers: dma: Introduce driver for NXP's eDMA IP #65671

merged 2 commits into from
Jan 23, 2024

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LaurentiuM1234
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@LaurentiuM1234 LaurentiuM1234 commented Nov 23, 2023 •
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Please check commit c63a3e7's description for reason why this driver is used instead of dma_mcux_edma.

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zephyrbot commented Nov 23, 2023 •
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The following west manifest projects have been modified in this Pull Request:

Name Old Revision New Revision Diff
hal_nxp zephyrproject-rtos/hal_nxp@9b2693c zephyrproject-rtos/hal_nxp@d6d43ca (master) zephyrproject-rtos/[email protected]

Note: This message is automatically posted and updated by the Manifest GitHub Action.

@zephyrbot zephyrbot added manifest manifest-hal_nxp DNM This PR should not be merged (Do Not Merge) labels Nov 23, 2023
@LaurentiuM1234 LaurentiuM1234 marked this pull request as ready for review November 23, 2023 12:19
@zephyrbot zephyrbot added platform: NXP NXP area: Devicetree Binding PR modifies or adds a Device Tree binding area: DMA Direct Memory Access labels Nov 23, 2023
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teburd commented Nov 23, 2023

I’m ok with having another eDMA, what I did with the designware dma is try to create a common set of functions and reuse them where possible as there are many users of the designware gpdma. It would be nice if eDMA did something similar if possible. Like if there’s common transfer block definitions and configuration registers for example some helpers could be made to reuse between the two.

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I’m ok with having another eDMA, what I did with the designware dma is try to create a common set of functions and reuse them where possible as there are many users of the designware gpdma. It would be nice if eDMA did something similar if possible. Like if there’s common transfer block definitions and configuration registers for example some helpers could be made to reuse between the two.

ACK. If everyone's ok with this, I'd like to have this in first as-is before making such clean-ups. It would make it a bit easier for me and I'm thinking it would also ease the review process a bit.

@LaurentiuM1234 LaurentiuM1234 mentioned this pull request Nov 24, 2023
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V4 updates

  1. Changed naming to dma_nxp_edma. No functional change.

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@DerekSnell could you please review this again? Thanks!

@LaurentiuM1234 LaurentiuM1234 mentioned this pull request Jan 17, 2024
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dbaluta
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I do not think it is efficicient to maintain 2 EDMA drivers if it's not necessary. Can you please be more concrete about why we cannot reuse code for the legacy EDMA versions, because I do not understand from your comments.

@decsny decsny dismissed their stale review January 17, 2024 20:12

removed for internal discussion about edma roadmap

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Hi @LaurentiuM1234,

Thank you for updating this PR. There are still some references to i.MX I want removed, since this driver could be used on other SOCs. But once you remove those, I will remove my block. Thank you

drivers/dma/Kconfig.nxp_edma Outdated Show resolved Hide resolved
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Hi @LaurentiuM1234,

Thank you for updating this PR. There are still some references to i.MX I want removed, since this driver could be used on other SOCs. But once you remove those, I will remove my block. Thank you

Should be fixed now

dbaluta
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@LaurentiuM1234 LaurentiuM1234 mentioned this pull request Jan 18, 2024
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iuliana-prodan
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@DerekSnell DerekSnell dismissed their stale review January 18, 2024 22:23

Thank you @LaurentiuM1234, for addressing my comments. I have removed my block

@LaurentiuM1234
manifest: Bump up hal_nxp revision
3892e6e 
Bump up hal_nxp revision to contain the EDMA REV2-related
changes from NXP HAL.

Signed-off-by: Laurentiu Mihalcea <[email protected]>
@LaurentiuM1234
drivers: dma: Introduce driver for NXP's eDMA IP
7f4b007 
This commit introduces a driver for NXP's eDMA IP.

The main reasons for introducing a new driver are the following:

	1) The HAL EDMA wrappers don't support well different
	eDMA versions (e.g: i.MX93 and i.MX8QM). As such, a new
	revision had to be introduced, thus requiring a new Zephyr
	driver.

	2) The eDMA versions found on i.MX93, i.MX8QM, and i.MX8QXP
	don't use the DMAMUX IP (instead, channel MUX-ing is performed
	through an eDMA register in the case of i.MX93).

Signed-off-by: Laurentiu Mihalcea <[email protected]>
@zephyrbot zephyrbot added platform: NXP Drivers NXP Semiconductors, drivers and removed DNM This PR should not be merged (Do Not Merge) labels Jan 22, 2024
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dependency merged, should be good to go as well once CI is green

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dbaluta commented Jan 23, 2024

@teburd @dleach02 good to merge. dependency merged and SHA updated.

@nashif nashif merged commit 6abc592 into zephyrproject-rtos:main Jan 23, 2024
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@iuliana-prodan iuliana-prodan iuliana-prodan approved these changes

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area: Devicetree Binding PR modifies or adds a Device Tree binding area: DMA Direct Memory Access manifest manifest-hal_nxp platform: NXP Drivers NXP Semiconductors, drivers platform: NXP NXP
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@LaurentiuM1234 @zephyrbot @teburd @danieldegrasse @dbaluta @iuliana-prodan @DerekSnell @decsny @nashif