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 CEF77296BBA; Fri, 6 Mar 2026 13:05:00 +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=1772802300; cv=none; b=QGS+p8UhS+fIbqN79TBU5NLM7l36olHCKNWW9+GyCRAurHirLNq9I7BA91HLPUjxzHDj/bDzmFW6wZI18Ds/UIcP7WFIwN/DibyYbSYO/rxrJ53jyRjVL1FYF+4RmhoQUTJ7J2TPSbtPGglfuVIiOJPCHCdBBR/cJNp5k6c0u0I= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772802300; c=relaxed/simple; bh=YJnF7YYdSjTbFJ8+etdFZLhgzDDcBHopGM6zUsnq2ao=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=u8QhZABFrouzUUpUrMW5HIX8ZRTQInH0o64Vc4JRimlbbkT9HAe3XYjoNlmDzdDCJdfIXAFIuMw98oWNbjbrkxmafKJzhsp6gmd5LZw8Y+t8xMrSl93r04ypx4MSg6l2i/aSz4gqAmfV4HxE0F+ymNKjaYfyaKdEOaX4logk9GM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Jn1euWhY; 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="Jn1euWhY" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 90A16C4CEF7; Fri, 6 Mar 2026 13:04:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1772802300; bh=YJnF7YYdSjTbFJ8+etdFZLhgzDDcBHopGM6zUsnq2ao=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=Jn1euWhYr/Pd9jPE66YzP8kHD3pZ4nV3KKC7AcJLmzKI91pTUlGm/ZxkZcmnfLqWQ gixWhqWW0AgaUI3k/3izuS8Rk8YqulP0waTkkory339bhClMLI6pY9Gr2tNTUoqbou pf1B8zyQDqinDt6D59p0S3gw1upaA86ZdVk2j0JT6V/oz5dvI1zCnC7koCEF05OPuV WZzsnKXleKIFi3Vunt5XdE/82g+Q+EKlI6qyqu3+trFXycG/GQgtOF25Av3JXeAkWz AWrrK5JtvIMBt2d2CRrLLksECsMSLTq9OxK9ETsGGjhHZzOqjOTHbhq+hSE63aWFM4 NPAjakE06dAdg== Date: Fri, 6 Mar 2026 13:04:54 +0000 From: Simon Horman To: Charles Perry Cc: netdev@vger.kernel.org, Andrew Lunn , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Nicolas Ferre , Claudiu Beznea , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH net-next 4/4] net: macb: add support for Microchip p64h ethernet endpoint Message-ID: <20260306130454.GB461701@kernel.org> References: <20260303180318.1814791-1-charles.perry@microchip.com> <20260303180318.1814791-5-charles.perry@microchip.com> 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: <20260303180318.1814791-5-charles.perry@microchip.com> On Tue, Mar 03, 2026 at 10:03:18AM -0800, Charles Perry wrote: > p64h doesn't have the USRIO register so MACB_CAPS_USRIO_DISABLED is > used. > > p64h does support PTP and has the timestamping unit so > MACB_CAPS_GEM_HAS_PTP is used. > > jumbo_max_len is set to 16383 (0x3FFF) as reported by the DCFG2 register > bits 0..13. The JML register also has a default value of 0x3FFF. > > dma_burst_length is set to 16 because that's what most other platforms > use and it worked for me so far. There is one other mode where bursts of > up to 256 are allowed but this might impact negatively other masters on > the NOC. The register default value is 4 (bursts up to 4). > > Signed-off-by: Charles Perry Reviewed-by: Simon Horman