[U-Boot] [RFC, 1/2] NVMe: add NVMe driver support

[Z.K. Zhang]

Hi Tom,

As I know, the CONFIG_BLK is not supported on some platforms' defconfig (# CONFIG_BLK is not set), such as the fsl-qoriq platform.
I find when 'CONFIG_BLK=y', then 'fsl-esdhc-mmc' device can't work normally.

So, in order to make sure the NVMe driver is available on all the platforms, I support for both with and without BLK.

Thank you!

Best regards,
Zhikang Zhang

-----Original Message-----
From: Tom Rini [mailto:trini at konsulko.com] 
Sent: Tuesday, April 11, 2017 5:49 AM
To: Z.K. Zhang <zhikang.zhang at nxp.com>
Cc: york sun <york.sun at nxp.com>; u-boot at lists.denx.de; Wenbin Song <wenbin.song at nxp.com>
Subject: Re: [U-Boot] [RFC, 1/2] NVMe: add NVMe driver support

On Thu, Apr 06, 2017 at 04:40:33PM +0800, Zhikang Zhang wrote:

> Add Support of devices that follow the NVM Express standard
> 
>  basic functions:
> 	nvme init/scan
> 	nvme info - show the basic information of device
> 	nvme Read/Write
> 
>  driver model:
> 	Use block device(CONFIG_BLK)'s structure to support nvme's DM.
> 	Use UCLASS_PCI as a parent uclass.
> 
> The driver code heavily copy from the NVMe driver code in Linux Kernel.
> 
> Signed-off-by: Zhikang Zhang <zhikang.zhang at nxp.com>
> Signed-off-by: Wenbin Song <wenbin.song at nxp.com>

Why support for both with and without BLK?  Thanks!

-- 
Tom