From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-m155101.qiye.163.com (mail-m155101.qiye.163.com [101.71.155.101]) (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 3BC5D1F1515; Tue, 27 May 2025 11:15:40 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=101.71.155.101 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1748344543; cv=none; b=BWXDW00F5dFayhDWY3XAJqQs7/9UOlwUnp6TdtDHHCIQFY4MAw8Qk918m7m27Es60T2cydr18fuAyf+u4AzkZz2XHFCusTTXGQv3p0kb8GmBhznlX1n3i2wSlYFUptPL87oHU6OBcZLdKRAWApnmQGQnMP3CfwXBnnwV5cRAnmo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1748344543; c=relaxed/simple; bh=KqOpgvrrjPxv8J6EQmpTBxyOoxtVu4hispzm9kQegqk=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=sK15d5PK0NLIQzjl8y6Lm3vVconyEdKsztxGMsIvz+VaWmjSWox3+5OoeEQXo9FVL/h+S7japQKlNHs7vjCgngtlviLPAr2IXP7kd/xJu2oJ5iYS/ZRxQlVV+VLxEKEGPXYUgAz0w/W3r8lWxMm/7IVm44M+NVqCQnvcq/vnasE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=whut.edu.cn; spf=pass smtp.mailfrom=whut.edu.cn; arc=none smtp.client-ip=101.71.155.101 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=whut.edu.cn Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=whut.edu.cn Received: from localhost (gy-adaptive-ssl-proxy-1-entmail-virt204.gy.ntes [27.18.99.37]) by smtp.qiye.163.com (Hmail) with ESMTP id 1691f3efc; Tue, 27 May 2025 19:15:37 +0800 (GMT+08:00) Date: Tue, 27 May 2025 19:15:37 +0800 From: Ze Huang To: Krzysztof Kozlowski , Ze Huang Cc: Greg Kroah-Hartman , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Yixun Lan , Thinh Nguyen , Philipp Zabel , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti , linux-usb@vger.kernel.org, devicetree@vger.kernel.org, linux-riscv@lists.infradead.org, spacemit@lists.linux.dev, linux-kernel@vger.kernel.org Subject: Re: [PATCH v4 2/4] dt-bindings: soc: spacemit: Add K1 MBUS controller Message-ID: References: <20250526-b4-k1-dwc3-v3-v4-0-63e4e525e5cb@whut.edu.cn> <20250526-b4-k1-dwc3-v3-v4-2-63e4e525e5cb@whut.edu.cn> <20250527-friendly-armadillo-of-snow-5bec9e@kuoka> 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: <20250527-friendly-armadillo-of-snow-5bec9e@kuoka> X-HM-Spam-Status: e1kfGhgUHx5ZQUpXWQgPGg8OCBgUHx5ZQUlOS1dZFg8aDwILHllBWSg2Ly tZV1koWUFITzdXWS1ZQUlXWQ8JGhUIEh9ZQVlDHx5CVh5MGU5CGUhJH0kaHVYeHw5VEwETFhoSFy QUDg9ZV1kYEgtZQVlJTFVKQ1VCQlVITFlXWRYaDxIVHRRZQVlPS0hVSktISUxCS1VKS0tVSkJLS1 kG X-HM-Tid: 0a97117482bd03a1kunm64e0c64ea7480 X-HM-MType: 10 X-HM-Sender-Digest: e1kMHhlZQR0aFwgeV1kSHx4VD1lBWUc6KxQ6Cyo*VjEwFFZMKRYOTzRP CTcKCxZVSlVKTE9DSE9PTkhDTEhLVTMWGhIXVRMOGhUcAR47DBMOD1UeHw5VGBVFWVdZEgtZQVlJ TFVKQ1VCQlVITFlXWQgBWUFJSUtKNwY+ On Tue, May 27, 2025 at 08:54:42AM +0200, Krzysztof Kozlowski wrote: > On Mon, May 26, 2025 at 10:40:18PM GMT, Ze Huang wrote: > > Some devices on the SpacemiT K1 SoC perform DMA through a memory bus > > (MBUS) that is not their immediate parent in the device tree. This bus > > uses a different address mapping than the CPU. > > > > To express this topology properly, devices are expected to use the > > interconnects with name "dma-mem" to reference the MBUS controller. > > > > Signed-off-by: Ze Huang > > --- > > .../bindings/soc/spacemit/spacemit,k1-mbus.yaml | 55 ++++++++++++++++++++++ > > 1 file changed, 55 insertions(+) > > > > diff --git a/Documentation/devicetree/bindings/soc/spacemit/spacemit,k1-mbus.yaml b/Documentation/devicetree/bindings/soc/spacemit/spacemit,k1-mbus.yaml > > Memory bus controllers go to /memory-controllers/ directory. > > Best regards, > Krzysztof OK