From mboxrd@z Thu Jan 1 00:00:00 1970 From: f.fainelli@gmail.com (Florian Fainelli) Date: Fri, 4 May 2018 10:04:48 -0700 Subject: [PATCH net-next v2 02/13] net: phy: sfp: handle non-wired SFP connectors In-Reply-To: <20180504135643.23466-3-antoine.tenart@bootlin.com> References: <20180504135643.23466-1-antoine.tenart@bootlin.com> <20180504135643.23466-3-antoine.tenart@bootlin.com> Message-ID: To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On 05/04/2018 06:56 AM, Antoine Tenart wrote: > SFP connectors can be solder on a board without having any of their pins > (LOS, i2c...) wired. In such cases the SFP link state cannot be guessed, > and the overall link status reporting is left to other layers. > > In order to achieve this, a new SFP_DEV status is added, named UNKNOWN. > This mode is set when it is not possible for the SFP code to get the > link status and as a result the link status is reported to be always UP > from the SFP point of view. Why represent the SFP in Device Tree then? Why not just declare this is a fixed link which would avoid having to introduce this "unknown" state. -- Florian