From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id AA65F36D507; Tue, 10 Feb 2026 14:42:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770734548; cv=none; b=XzHQPaiB5Wd1UDXrqoPfZOYUlUF05Nb8Cax1/wf3Mn9DA70M/eqrX0C48QXd9RcU6G/ZsEs8zhvwd0/LRvW2cfXgWWKws5lXk8fBq/K0PZdSmw15BuKJzArVSe/04o+Ufd+mjNu8gXH+q0Ed5GEi3ZwxJhX+fkS7jyqypSCJxcA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770734548; c=relaxed/simple; bh=yM/bjYfFNzPrVO4q9VIT94RYW50ufxq/T9tLZnoCdoU=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=ebycIADKmThK2y/qJNyI6RtlEHd7KiiH1yutP2YzPu64LQKr7HvfPntR7NezVaUxQ54Ml9XXOoP+Ou8pY3rUBJv+XgVv2g/CtOIXWrq5vaphdRFDW7ljJ5AiKOw0xa+86QueD5Uc8KwN8nYsWSpCdNtUAshE42yL9eEVL0P2VTs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=jjt1UIej; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="jjt1UIej" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 037FDC116C6; Tue, 10 Feb 2026 14:42:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1770734548; bh=yM/bjYfFNzPrVO4q9VIT94RYW50ufxq/T9tLZnoCdoU=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=jjt1UIejBrQqV3lkIc8M8d1nfyWEUPXVU4TadpTPwUANdLCWhrutXdNXFDLzSty5I Fp16bU4jVICTxlH8mVmHiAiziX8mAdLxbbAYw5IA8k3SKii8EnB1gw/V0jvwt+IaX2 9IZv881xv+5ctao/wIHMnlKTxkrFE6TH4c0o53F09/HgHMxZR+Np5CRzkkH6Ahpqde zE2c5043DZXKs2dOlwYV6M1Z+9L5TQu8aypwwNcVasrjpqNmoVjwQ8uzazPKDzikxR qO1seRRxo+1Z8mNmkL+BYQ653+EZGc77QkwQDnRcTx1jNmaAiYWnqo8TRzGro/jC+P 1dqwJkH9VPlJg== Date: Tue, 10 Feb 2026 08:42:27 -0600 From: Rob Herring To: Andrew Davis Cc: Teresa Remmet , Andrew Lunn , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Krzysztof Kozlowski , Conor Dooley , Andrew Lunn , Heiner Kallweit , Russell King , netdev@vger.kernel.org, devicetree@vger.kernel.org, upstream@lists.phytec.de, Yannic Moog , Benjamin Hahn , Yashwanth Varakala , Jan Remmet Subject: Re: [PATCH 0/2] net: phy: dp83867: add numeric impedance DT property Message-ID: <20260210144227.GA2675838-robh@kernel.org> References: <20260129-wip-t-remmet-phytec-de-bspimx95-132_upstream-v1-0-8deccd658d16@phytec.de> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: 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