From: Rob Herring <robh@kernel.org>
To: Andrew Davis <afd@ti.com>
Cc: Teresa Remmet <t.remmet@phytec.de>,
Andrew Lunn <andrew+netdev@lunn.ch>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>, Andrew Lunn <andrew@lunn.ch>,
Heiner Kallweit <hkallweit1@gmail.com>,
Russell King <linux@armlinux.org.uk>,
netdev@vger.kernel.org, devicetree@vger.kernel.org,
upstream@lists.phytec.de, Yannic Moog <y.moog@phytec.de>,
Benjamin Hahn <b.hahn@phytec.de>,
Yashwanth Varakala <y.varakala@phytec.de>,
Jan Remmet <j.remmet@phytec.de>
Subject: Re: [PATCH 0/2] net: phy: dp83867: add numeric impedance DT property
Date: Tue, 10 Feb 2026 08:42:27 -0600 [thread overview]
Message-ID: <20260210144227.GA2675838-robh@kernel.org> (raw)
In-Reply-To: <b7b8f855-bf38-41ba-96c4-1bdc3a1c2cc8@ti.com>
On Thu, Jan 29, 2026 at 11:31:29AM -0600, Andrew Davis wrote:
> On 1/29/26 8:13 AM, Teresa Remmet wrote:
> > Introduce a new way to set the output impedance over device tree.
> > So far it is possible to pass the value either over an nvmem
> > cell or to set the min and max booleans over device tree.
> >
>
> We have a similar issue in our networking driver, we can either get
> the MAC address though a NVMEM cell, or when that is unavailable use
> fallback to using a hardcoded value in DT.
>
> I wonder if it would make sense to add a new type of NVMEM cell that
> encodes the content of the cell in DT itself..
I don't think DT should be providing fake nvmem...
The firmware/bootloader could read nvmem and always populate the DT MAC
address property.
Or Linux can provide a single API that reads from different sources.
Rob
prev parent reply other threads:[~2026-02-10 14:42 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-01-29 14:13 [PATCH 0/2] net: phy: dp83867: add numeric impedance DT property Teresa Remmet
2026-01-29 14:13 ` [PATCH 1/2] dt-bindings: dp83867: add binding for ti,output-impedance property Teresa Remmet
2026-02-10 14:48 ` Rob Herring
2026-02-11 12:50 ` Teresa Remmet
2026-02-11 14:02 ` Andrew Lunn
2026-02-17 13:51 ` Teresa Remmet
2026-01-29 14:13 ` [PATCH 2/2] net: phy: dp83867: add numeric io impedance DT property Teresa Remmet
2026-01-29 16:25 ` Jakub Kicinski
2026-01-29 17:31 ` [PATCH 0/2] net: phy: dp83867: add numeric " Andrew Davis
2026-02-10 14:42 ` Rob Herring [this message]
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