From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from vps0.lunn.ch (vps0.lunn.ch [156.67.10.101]) (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 6126C4B8DC4; Tue, 5 May 2026 19:01:50 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=156.67.10.101 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778007716; cv=none; b=KlNr8r0qSbb49Mm5F9vqQCAIN2Iptiw+Hk3tsGYKS7Vi0YoayzSC1Mxn8LKpwmInvd8ZNWbdkcMznBhWDkZyGgCsOqks2/mKPYO+PN7KGZ9Kw8VRD+1V9ENalqDwNnKfOZpn0a5cKAqR0t7vjKgzBm8wT1hvLV7N4sEF5QizCCk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778007716; c=relaxed/simple; bh=P9N778U3RllFTxP2AoteTVxbVBVX3pa8/oJW54oK+9Q=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=N2hi7Tae38ZinGGu1dLmmBzD2iiaRooe8iYkVvzvOubSYZbIHQeO7vL4bNp2eOzvVDRrl/ByT8M/yogWR/2G3P1ibC7da/GrqAVNCcMgMVFVsNTyF9z4fD2oRfRBF80PmOoRxSZw0TB432A28BZinQvlr7NbJ1QUBBLp4jHNDz8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=lunn.ch; spf=pass smtp.mailfrom=lunn.ch; dkim=pass (1024-bit key) header.d=lunn.ch header.i=@lunn.ch header.b=EtODWq8w; arc=none smtp.client-ip=156.67.10.101 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=lunn.ch Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=lunn.ch Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=lunn.ch header.i=@lunn.ch header.b="EtODWq8w" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lunn.ch; s=20171124; h=In-Reply-To:Content-Disposition:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:From:Sender:Reply-To:Subject: Date:Message-ID:To:Cc:MIME-Version:Content-Type:Content-Transfer-Encoding: Content-ID:Content-Description:Content-Disposition:In-Reply-To:References; bh=Tc1Ou8TseUH7oOrozpxYqdSnMg7Q1I3CXcfA2cR25iM=; b=EtODWq8wk8aUDQVLg8P6rL/GQv vjspXkXXNTM/5Gk2B7xXoZk0X15u2OEWe6ry3XxhCTCVJznMzarvGxO6j699jm6lnMYckdNGZwOcO 9UO+CKVf6F7KN+P9EE6sSA69nkWl4tADMMDtxwZ6iwxjl5n7hofRZD63pLQBcArLt9Rw=; Received: from andrew by vps0.lunn.ch with local (Exim 4.94.2) (envelope-from ) id 1wKL1W-001Wbh-4J; Tue, 05 May 2026 21:01:38 +0200 Date: Tue, 5 May 2026 21:01:38 +0200 From: Andrew Lunn To: Selvamani Rajagopal Cc: Rob Herring , Piergiorgio Beruto , "andrew+netdev@lunn.ch" , "davem@davemloft.net" , "edumazet@google.com" , "kuba@kernel.org" , "pabeni@redhat.com" , "krzk+dt@kernel.org" , "conor+dt@kernel.org" , "netdev@vger.kernel.org" , "devicetree@vger.kernel.org" , "linux-kernel@vger.kernel.org" Subject: Re: [PATCH net-next 1/5] dt-bindings: net: add onsemi's TS2500/NCN26010 10BASE-T1S MACPHY Message-ID: <69cfb4a7-93b8-4ea7-b4c8-422f19419fe5@lunn.ch> References: <20260505134434.GA2493310-robh@kernel.org> <7fad56ee-88c8-4e0a-8411-eeb5c0ab4a38@lunn.ch> Precedence: bulk X-Mailing-List: devicetree@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: > > Since it is a 10Mbps media, if the SPI speed is lower than 15MHz, > > maybe it cannot keep up with the media? But this clock speed on its > > own is not the deciding factor, there could be other users of the SPI > > bus. I would expect the driver and device to keep working if the SPI > > bus is saturated, just not give the full 10Mbps. And it would also be > > a good test the device and driver do work correctly when the bus is > > saturated. > > > I should have given more information. If we configure SPI at lower > speed, it may start losing frames as it can't sustain the PHY's > speed. Please let me know If I should remove it. So it is not really a requirement. Please add a comment that at speed of at least 15MHz is recommended in order to obtain line rate performance. Andrew