[U-Boot] [PATCH 02/15][v4] imx: usb: ehci-mx7 add usb driver for i.MX7D

[Alonso Adrian]

Hi Marek,

> -----Original Message-----
> From: Marek Vasut [mailto:marex at denx.de]
> Sent: Friday, July 24, 2015 4:44 AM
> To: Alonso Lazcano Adrian-B38018
> Cc: u-boot at lists.denx.de; sbabic at denx.de; otavio at ossystems.com.br;
> Estevam Fabio-R49496; Li Frank-B20596; Garg Nitin-B37173
> Subject: Re: [PATCH 02/15][v4] imx: usb: ehci-mx7 add usb driver for i.MX7D
> 
> On Thursday, July 23, 2015 at 09:25:17 PM, Adrian Alonso wrote:
> > Add support for usb driver for i.MX7D SoC
> >
> > Signed-off-by: Adrian Alonso <aalonso at freescale.com>
> > Signed-off-by: Ye.Li <B37916 at freescale.com>
> > Signed-off-by: Peng Fan <Peng.Fan at freescale.com>
> 
> So errr, why exactly can ehci-mx6 not be used here ? The code looks almost like
> a copy of ehci-mx6 with minor tweaks here and there.
> 
> Best regards,
> Marek Vasut

[Adrian] We can definitely have a single driver to support imx7 and imx6, but we mainly decide
to have a driver for each SoC to try to make easier to maintain, there are so many variants of imx6
(Quad/Dual/Solo/SoloX/QuadPlus/UL) and imx7 (Dual/Solo); while there are several similarities in
USB IP for iMX6 and iMX7, USB PHY Control and clock settings differ slightly making code harder to
Understand and maintain in a single driver for imx7 and imx6.

Regards
Adrian