[U-Boot] [PATCH 2/2] net: add ICPlus PHY driver

[Marek Vasut <marex@denx.de>]

Dear Yegor Yefremov,

> On Thu, Nov 29, 2012 at 1:55 PM, Marek Vasut <marex@denx.de> wrote:
> > Dear Yegor Yefremov,
> > 
> >> On Thu, Nov 29, 2012 at 8:53 AM, Henrik Nordstr?m
> >> 
> >> <henrik@henriknordstrom.net> wrote:
> >> > tor 2012-11-29 klockan 07:27 +0100 skrev Marek Vasut:
> >> >> Dear yegorslists at googlemail.com,
> >> >> 
> >> >> > From: Yegor Yefremov <yegorslists@googlemail.com>
> >> >> > 
> >> >> > The driver code was taken from Linux kernel source:
> >> >> > drivers/net/phy/icplus.c
> >> >> > 
> >> >> > Signed-off-by: Yegor Yefremov <yegorslists@googlemail.com>
> >> >> 
> >> >> [...]
> >> >> 
> >> >> Is there any user for this PHY please?
> >> > 
> >> > I don't have one, but know at least one user having one in an A10
> >> > based "netbook".
> >> > 
> >> > http://linux-sunxi.org/File:H6-netbook-mainboard.jpg
> >> 
> >> I found these boards in kernel:
> >> 
> >> arch/mips/configs/malta_defconfig:CONFIG_ICPLUS_PHY=m
> >> arch/mips/configs/bcm47xx_defconfig:CONFIG_ICPLUS_PHY=m
> >> arch/mips/configs/ip27_defconfig:CONFIG_ICPLUS_PHY=m
> >> arch/mips/configs/sead3_defconfig:CONFIG_ICPLUS_PHY=y
> >> arch/powerpc/configs/mpc512x_defconfig:CONFIG_ICPLUS_PHY=y
> >> arch/powerpc/configs/52xx/motionpro_defconfig:CONFIG_ICPLUS_PHY=y
> >> arch/powerpc/configs/83xx/mpc832x_rdb_defconfig:CONFIG_ICPLUS_PHY=y
> >> arch/powerpc/configs/mpc83xx_defconfig:CONFIG_ICPLUS_PHY=y
> >> arch/powerpc/configs/ppc6xx_defconfig:CONFIG_ICPLUS_PHY=m
> > 
> > Sure, but the question/point is ... won't this be dead code in u-boot? It
> > won't once you add at least one board that actually uses it ... adding
> > it only so it's there will only cause it to bitrot and it'll actually
> > only add more burden to maintainers.
> 
> It won't be dead code, because we will use it :-) Our board is
> derivative of BeagleBone & Co, so the whole support stuff is already
> in u-boot.

You need to enable it for that board though ;-)

> I can also image that some system didn't require network
> support in u-boot and didn't bother with implementing the phy driver.
> x86 systems are likely to have this phy too. And the driver is really
> small and uses mostly generic routines.
> 
> Yegor

Best regards,
Marek Vasut