XDMA engine for AST2400

南野ムルシエラゴ 1181052146 at qq.com
Fri Aug 28 22:19:55 AEST 2020

Hi, Ryan

Thank you very much for your help. I am a beginner for XDMA engine, yet I do not know how to use it(>.<) ... 
I learn XDMA from the driver(/drivers/soc/aspeed/aspeed-xdma.c) and AST2400 datasheet.
Are there any other examples or guidances for modifying the driver for AST2400 XDMA engine?

Best Regards!
Liu Hongwei

------------------ Original ------------------
From:                                                                                                                        "Ryan Chen"                                                                                    <ryan_chen at aspeedtech.com>;
Date: Fri, Aug 28, 2020 10:52 AM
To: "南野ムルシエラゴ"<1181052146 at qq.com>;"openbmc"<openbmc at lists.ozlabs.org>;

Subject: RE: XDMA engine for AST2400

	AST2400 support xDMA, the different will be command format. It need to modify for AST2400.

From: openbmc <openbmc-bounces+ryan_chen=aspeedtech.com at lists.ozlabs.org> On Behalf Of 南野??????
Sent: Friday, August 28, 2020 10:13 AM
To: openbmc <openbmc at lists.ozlabs.org>
Subject: XDMA engine for AST2400


I am learning Openbmc with a AST2400 BMC. I am learning XDMA engine. I saw there is a driver in the linux kernel(/drivers/soc/aspeed/aspeed-xdma.c) for XDMA engine. But this driver's "of_match_table" only support AST2500 and AST2600.
Does AST2400 not support XDMA engine? But in the datasheet, the AST2400 has a XDMA engine as with AST2500.
Can some one help me? Thanks!

Best Regards!
Liu Hongwei
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