linux-kernel - RE: [PATCH v2 3/3] ARM: dts: aspeed: add reset properties into MDIO nodes

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Date:   Tue, 22 Mar 2022 02:32:13 +0000
From:   Dylan Hung <dylan_hung@...eedtech.com>
To:     Krzysztof Kozlowski <krzk@...nel.org>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "joel@....id.au" <joel@....id.au>,
        "andrew@...id.au" <andrew@...id.au>,
        "andrew@...n.ch" <andrew@...n.ch>,
        "hkallweit1@...il.com" <hkallweit1@...il.com>,
        "linux@...linux.org.uk" <linux@...linux.org.uk>,
        "davem@...emloft.net" <davem@...emloft.net>,
        "kuba@...nel.org" <kuba@...nel.org>,
        "pabeni@...hat.com" <pabeni@...hat.com>,
        "p.zabel@...gutronix.de" <p.zabel@...gutronix.de>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-aspeed@...ts.ozlabs.org" <linux-aspeed@...ts.ozlabs.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>
CC:     BMC-SW <BMC-SW@...eedtech.com>,
        "stable@...r.kernel.org" <stable@...r.kernel.org>
Subject: RE: [PATCH v2 3/3] ARM: dts: aspeed: add reset properties into MDIO
 nodes

> -----Original Message-----
> From: Krzysztof Kozlowski [mailto:krzk@...nel.org]
> Sent: 2022年3月21日 11:53 PM
> To: Dylan Hung <dylan_hung@...eedtech.com>; robh+dt@...nel.org;
> joel@....id.au; andrew@...id.au; andrew@...n.ch; hkallweit1@...il.com;
> linux@...linux.org.uk; davem@...emloft.net; kuba@...nel.org;
> pabeni@...hat.com; p.zabel@...gutronix.de; devicetree@...r.kernel.org;
> linux-arm-kernel@...ts.infradead.org; linux-aspeed@...ts.ozlabs.org;
> linux-kernel@...r.kernel.org; netdev@...r.kernel.org
> Cc: BMC-SW <BMC-SW@...eedtech.com>; stable@...r.kernel.org
> Subject: Re: [PATCH v2 3/3] ARM: dts: aspeed: add reset properties into MDIO
> nodes
> 
> On 21/03/2022 10:56, Dylan Hung wrote:
> > Add reset control properties into MDIO nodes.  The 4 MDIO controllers in
> > AST2600 SOC share one reset control bit SCU50[3].
> >
> > Signed-off-by: Dylan Hung <dylan_hung@...eedtech.com>
> > Cc: stable@...r.kernel.org
> 
> Please describe the bug being fixed. See stable-kernel-rules.

Thank you for your comment.
The reset deassertion of the MDIO device was usually done by the bootloader (u-boot).
However, one of our clients uses proprietary bootloader and doesn't deassert the MDIO
reset so failed to access the HW in kernel driver.  The reset deassertion is missing in the
kernel driver since it was created, should I add a BugFix for the first commit of this driver?
Or would it be better if I remove " Cc: stable@...r.kernel.org"?

> 
> Best regards,
> Krzysztof