Where can I get the EDMA3 Linux Kernel Device Driver for KeyStone2 Processor (66AK2E02)

Vijay Gaadhe

Hi,

We want to make use of EDMA3 for our PCIe driver. We are using MCSDK code Linux Kernel Version 3.10.61.

When we look at the menuconfig option it does not show EDMA as an option to select. Though it shows PACKET_DMA and UDMA but we want to make use of EDMA3 module.

Please guide us on how can I get EDMA3 Device Driver module for Linux Kernel and any sample code which can show the usage of that EDMA3 driver (i.e. how to configure channels and start DMA transfer).

Thanking you in advance

Vijay

over 9 years ago

0 Raja over 9 years ago

TI__Guru* 81335 points

Hi Vijay,

Initially we had a plan to release the EDMA user space driver but I have not followed up on that subject. I will check with factory team and get back to you on this.

Thank you for your patience.

0 Rex Chang over 9 years ago in reply to Raja

TI__Guru 50170 points

Hi, Vijay,

Please check in Processor SDK 2.0.1, and see if that is what you want. https://e2e.ti.com/support/arm/sitara_arm/b/sitara_announcements/archive/2016/01/18/processor-sdk-2-0-1-released-am57x-am437x-am335x-k2x-c66x

Rex

0 Rex Chang over 9 years ago in reply to Rex Chang

TI__Guru 50170 points

Hi, Vijay,

I just found out it seems that the ProcSDK 2.0.1 only supports EDMA on K2HK device, not K2E. I'll find out more details and get back to you.

Rex

0 Rex Chang over 9 years ago in reply to Rex Chang

TI__Guru 50170 points

Hi, Vijay,

Never mind. I wasn't using the right platform package. Let me know if you have any questions.

Rex

0 Titusrathinaraj Stalin over 9 years ago

TI__Guru** 116100 points

Dear Vijay,
In addition to Raja and Rex suggestions, here you get some more information.

git.ti.com/.../keystone.dtsi

udma0 {

compatible = "ti,keystone-udma";

};

uio_edma3: edma3 {

compatible = "ti,uio-module-drv";

mem = <0x02700000 0x000C0000>;

label = "edma3";

};

git.ti.com/.../keystone-udma.c

https://e2e.ti.com/support/dsp/c6000_multi-core_dsps/f/639/p/425072/1517793#1517793

0 Vijay Gaadhe over 9 years ago in reply to Titusrathinaraj Stalin

Prodigy 240 points

Hi,
Thanks for reply. but i already told my processor is keystone 2 (66AK2E02). And my Linux Kernel Version is 3.10.61. I don't want user space driver.
As I told how can I get EDMA3 Device Driver for Linux Kernel ???

Thanking you in advance
Vijay

0 Rex Chang over 9 years ago in reply to Vijay Gaadhe

TI__Guru 50170 points

Hi, Vijay,

If I understand your reply correctly that you want to stay with Kernel v3.10. If that is the case, you may want to try to merge the changes related to EDMA3 in TI Kernel v4.1 from ProcSDK 2.0.1 and see if it works.

Rex

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Where can I get the EDMA3 Linux Kernel Device Driver for KeyStone2 Processor (66AK2E02)