linux-kernel - Re: [PATCH] ARM: i.MX6: update KSZ9031 phy fixup

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Date:	Fri, 21 Mar 2014 22:23:20 +0100
From:	Eric Bénard <eric@...rea.com>
To:	Hubert Chaumette <hchaumette@...neo-embedded.com>
Cc:	linux-arm-kernel@...ts.infradead.org, linux@....linux.org.uk,
	shawn.guo@...aro.org, linux-kernel@...r.kernel.org,
	kernel@...gutronix.de
Subject: Re: [PATCH] ARM: i.MX6: update KSZ9031 phy fixup

Hi Hubert,

Le Fri, 21 Mar 2014 18:08:07 +0100,
Hubert Chaumette <hchaumette@...neo-embedded.com> a écrit :

> 
> Update KSZ9031RN phy fixup for Congatec conga-QEVAL and conga-QMX6 combo :
> set RGMII GTX_CLK and RX_CLK pad skew to +0.96ns.
> 
> Signed-off-by: Hubert Chaumette <hchaumette@...neo-embedded.com>
> ---
>  arch/arm/mach-imx/mach-imx6q.c | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/arch/arm/mach-imx/mach-imx6q.c b/arch/arm/mach-imx/mach-imx6q.c
> index 76e5db4..db307c2 100644
> --- a/arch/arm/mach-imx/mach-imx6q.c
> +++ b/arch/arm/mach-imx/mach-imx6q.c
> @@ -77,6 +77,9 @@ static int ksz9031rn_phy_fixup(struct phy_device *dev)
>  	mmd_write_reg(dev, 2, 5, 0);
>  	mmd_write_reg(dev, 2, 8, 0x003ff);
>  
> +	/* For Congatec conga-QMX6 board */
> +	mmd_write_reg(dev, 0x02, 0x06, 0xffff);
> +
>  	return 0;
>  }
>  
that's board specific (the needed delay depends on the routing delay on
the PCB), so this should not go in a generic file.

Eric
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