[U-Boot] dwc_ahsata vs ahci

[Lv Terry-R65388]

Hi Pavel,

	The ahci.c is a ahci driver using pci interface, while dwc_asata is not.

	 u-boot don't have a pure ahci driver now, thus we have to reuse some ahci parts from ahci.c in dwc_asata.c.

	Thanks~~ 

Yours
Terry

-----Original Message-----
From: u-boot-bounces at lists.denx.de [mailto:u-boot-bounces at lists.denx.de] On Behalf Of Stefano Babic
Sent: 2012?7?29? 14:56
To: Pavel Herrmann
Cc: u-boot at lists.denx.de; u-boot-dm at lists.denx.de
Subject: Re: [U-Boot] dwc_ahsata vs ahci

On 28/07/2012 15:44, Pavel Herrmann wrote:
> Hi,
> 

Hi Pavel,

> While working on the DM project, I found out that there are two 
> implementations of AHCI drivers - one in block/ahci.c, one in 
> block/dwc_ahsata.c
> 


ooopppss !

> what is the difference between them (apart from the obvious, ahci.c 
> exposes SCSI API, dwc_ahsata exposes SATA API)? are there any problems 
> that would prevent me from merging them?

No, there are not evident reasons !

dwc_asata was inserted to add SATA support for Freescale MX5 family, and I missed that a similar driver was already in u-boot. dwc_ahsata was ported from Freescale's u-boot, and linked only for MX5 / MX6 SOCs. I think it is a very good idea to merge the two drivers (dwc_ahsata seems an updated version of the original driver), thanks to note this !

Best regards,
Stefano Babic

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