Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
Message-ID: <216b98d5-a254-4527-c569-9f3397811e70@kernel.org>
Date:   Tue, 22 Mar 2022 09:40:00 +0100
MIME-Version: 1.0
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101
 Thunderbird/91.5.0
From:   Krzysztof Kozlowski <krzk@kernel.org>
Subject: Re: [PATCH v2 3/3] ARM: dts: aspeed: add reset properties into MDIO
 nodes
Content-Language: en-US
To:     Dylan Hung <dylan_hung@aspeedtech.com>,
        "robh+dt@kernel.org" <robh+dt@kernel.org>,
        "joel@jms.id.au" <joel@jms.id.au>,
        "andrew@aj.id.au" <andrew@aj.id.au>,
        "andrew@lunn.ch" <andrew@lunn.ch>,
        "hkallweit1@gmail.com" <hkallweit1@gmail.com>,
        "linux@armlinux.org.uk" <linux@armlinux.org.uk>,
        "davem@davemloft.net" <davem@davemloft.net>,
        "kuba@kernel.org" <kuba@kernel.org>,
        "pabeni@redhat.com" <pabeni@redhat.com>,
        "p.zabel@pengutronix.de" <p.zabel@pengutronix.de>,
        "devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
        "linux-arm-kernel@lists.infradead.org" 
        <linux-arm-kernel@lists.infradead.org>,
        "linux-aspeed@lists.ozlabs.org" <linux-aspeed@lists.ozlabs.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        "netdev@vger.kernel.org" <netdev@vger.kernel.org>
Cc:     BMC-SW <BMC-SW@aspeedtech.com>,
        "stable@vger.kernel.org" <stable@vger.kernel.org>
References: <20220321095648.4760-1-dylan_hung@aspeedtech.com>
 <20220321095648.4760-4-dylan_hung@aspeedtech.com>
 <eefe6dd8-6542-a5c2-6bdf-2c3ffe06e06b@kernel.org>
 <HK0PR06MB2834CFADF087A439B06F87C29C179@HK0PR06MB2834.apcprd06.prod.outlook.com>
In-Reply-To: <HK0PR06MB2834CFADF087A439B06F87C29C179@HK0PR06MB2834.apcprd06.prod.outlook.com>
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Precedence: bulk

On 22/03/2022 03:32, Dylan Hung wrote:
>> -----Original Message-----
>> From: Krzysztof Kozlowski [mailto:krzk@kernel.org]
>> Sent: 2022年3月21日 11:53 PM
>> To: Dylan Hung <dylan_hung@aspeedtech.com>; robh+dt@kernel.org;
>> joel@jms.id.au; andrew@aj.id.au; andrew@lunn.ch; hkallweit1@gmail.com;
>> linux@armlinux.org.uk; davem@davemloft.net; kuba@kernel.org;
>> pabeni@redhat.com; p.zabel@pengutronix.de; devicetree@vger.kernel.org;
>> linux-arm-kernel@lists.infradead.org; linux-aspeed@lists.ozlabs.org;
>> linux-kernel@vger.kernel.org; netdev@vger.kernel.org
>> Cc: BMC-SW <BMC-SW@aspeedtech.com>; stable@vger.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@aspeedtech.com>
>>> Cc: stable@vger.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@vger.kernel.org"?

This rather looks like a missing feature, not a bug. Anyway any
description must be in commit message.


Best regards,
Krzysztof