netdev - RE: [PATCH 1/1] Revert "net: fec: Ensure clocks are enabled while using mdio bus"

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Date:	Fri, 14 Aug 2015 07:03:53 +0000
From:	Duan Andy <fugang.duan@...escale.com>
To:	Peter Chen <Peter.Chen@...escale.com>,
	"davem@...emloft.net" <davem@...emloft.net>
CC:	Peter Chen <Peter.Chen@...escale.com>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"shawn.guo@...aro.org" <shawn.guo@...aro.org>,
	Fabio Estevam <Fabio.Estevam@...escale.com>,
	"tyler.baker@...aro.org" <tyler.baker@...aro.org>,
	Lucas Stach <l.stach@...gutronix.de>,
	Andrew Lunn <andrew@...n.ch>
Subject: RE: [PATCH 1/1] Revert "net: fec: Ensure clocks are enabled while
 using mdio bus"

From: Peter Chen <peter.chen@...escale.com> Sent: Friday, August 14, 2015 1:48 PM
> To: davem@...emloft.net
> Cc: Chen Peter-B29397; netdev@...r.kernel.org; Duan Fugang-B38611;
> shawn.guo@...aro.org; Estevam Fabio-R49496; tyler.baker@...aro.org; Lucas
> Stach; Andrew Lunn
> Subject: [PATCH 1/1] Revert "net: fec: Ensure clocks are enabled while
> using mdio bus"
> 
> It causes the i.mx6sx sdb board hang when using nfsroot during boots up
> at v4.2-rc6.
> 
> This reverts commit 8fff755e9f8d0f70a595e79f248695ce6aef5cc3.
> 
> Cc: netdev@...r.kernel.org
> Cc: Fugang Duan <B38611@...escale.com>
> Cc: shawn.guo@...aro.org
> Cc: fabio.estevam@...escale.com
> Cc: tyler.baker@...aro.org
> Cc: Lucas Stach <l.stach@...gutronix.de>
> Cc: Andrew Lunn <andrew@...n.ch>
> Signed-off-by: Peter Chen <peter.chen@...escale.com>
> ---
> 
> According to Fugang Duan, the i.mx series has different clock control
> sequence among SoCs, this patch may only consider certain SoCs.
> 
>  drivers/net/ethernet/freescale/fec_main.c | 89 +++++--------------------
> ------
>  1 file changed, 13 insertions(+), 76 deletions(-)
> 

I suggest to revert the patch. The current patch doesn't consider i.MX6sx/i.MX7d... chips.
As somebody/customer's requirement that want to use MDIO bus is independent of MAC itself, I will submit one mdio driver to separate MDIO bus and MAC driver.

Regards,
Andy
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