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Wed, 01 Apr 2026 14:44:58 +0800 (CST) X-QQ-SSF: 0000000000000000000000000000000 X-QQ-GoodBg: 0 X-BIZMAIL-ID: 1209826560755650584 EX-QQ-RecipientCnt: 21 Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=UTF-8 Date: Wed, 01 Apr 2026 14:44:58 +0800 Message-Id: Cc: "Vinod Koul" , "Frank Li" , "Rob Herring" , "Krzysztof Kozlowski" , "Conor Dooley" , "Yixun Lan" , "Guodong Xu" , "Michael Turquette" , "Stephen Boyd" , "Paul Walmsley" , "Palmer Dabbelt" , "Albert Ou" , "Alexandre Ghiti" , , , , , , Subject: Re: [PATCH v3 1/5] dt-bindings: dmaengine: Add SpacemiT K3 DMA compatible string From: "Troy Mitchell" To: "Krzysztof Kozlowski" , "Troy Mitchell" X-Mailer: aerc 0.21.0-0-g5549850facc2 References: <20260331-k3-pdma-v3-0-a4e60dd8b4b3@linux.spacemit.com> <20260331-k3-pdma-v3-1-a4e60dd8b4b3@linux.spacemit.com> <20260401-divergent-magenta-dalmatian-3c6c3e@quoll> In-Reply-To: <20260401-divergent-magenta-dalmatian-3c6c3e@quoll> X-QQ-SENDSIZE: 520 Feedback-ID: esmtpsz:linux.spacemit.com:qybglogicsvrgz:qybglogicsvrgz3a-0 X-QQ-XMAILINFO: N9m5DZSiVOZbSjfBIAHCOaI9580cNFua75cW6peU9XPs/5ClY9v4OmN4 owqev2zFdNAATCFOi6twzi/iF/GqezRCQWgbLUQw+lPDiXo4wqzgKbKYl8MRq9by7EqOYQw e03FFqbdHOS72KDNHdlv4XNwpvBqYL+0uLu35zqzgrNgDG27HjZBEVEBo+Gg9bWGlpXSL8t UbPXZTbNI04bQ0KxJAJq5a3IdodTDo/yPPjX+moWowygem1dw2rlKHuhSx1km3UdUVTXuCD jVRjhtenQg7hbzqNI1IiUkiZ2PHXjQgRh0DdXX1/8aT6xlHTkbVu7bbUEQ37jVUB36TPQfJ F5uSN+zNWhpsAHbLdY+7tchj/+M5r8/HPHZtcxpox+UIwRau6U1QiJlk+shqC8EOB7K/I9V P3a6HlYeQR/iUkKDn/Xl7dHtvh00wW+FlSpAVegBOwF37rpAX2J3jtSIIZH+oduWaP417hl VraVOmHQnu00Smo4/5fr9XyVpsID8WBHjnqsKqEOpqYU+JIaY1AIAJbN/da7BlBimMYKQcz ncG5Rd3XBoHkxoKECWLBqRdYRldT9WnUXeIBEuOglG88MG/8rP0NOFEB5K77LQylvsdP8Dr 6EcdWQTgs7E4bz1CKoCE+TBdI3u9OpnUyVlNYBIs82/qwgvJsYHohy22JJnB+vkWqgnai50 OYg0pZ6nM3sDeL93DoNHTLEMAucqxX5KVpHlZonGFw0/YulAw3pXpXYU3L3h/dLdVxbAb8h y9uYn8QWvM7OEPEyGjHRN/YwjWUVUle4tiXfSQ9Y0mg6ynGj5gc4X90yh3ejufllkhN1qPd XwsR3tcsRoRUQx6F343MPF/+7SyGUI5CNhDGGgW0fwY2OCjaonTquc+Q6ak3dVNeuVMDEkm IzojDah2TDJf3Tdryf5ryhJ2X6CsAw5JnXkRgWFRFB1QYuBTlKMnbkEtQacaHAwLzk5BMCc awYWLgI7fBE7+X3mkB9vJCxvMVifTX439yVHnMHlvZ916oFaSn/QPilJSLHZxW+QvXDuMLb UuJNILu1yea/cQorlRbcFt/yLfBZDHlQU3tjWN0Zs3dIJsZb1S/nXMrO+Jl6PkD0jf8Wfxl d2wpM3aEKSYDAh6BbNKrQ0= X-QQ-XMRINFO: OWPUhxQsoeAVwkVaQIEGSKwwgKCxK/fD5g== X-QQ-RECHKSPAM: 0 On Wed Apr 1, 2026 at 2:42 PM CST, Krzysztof Kozlowski wrote: > On Tue, Mar 31, 2026 at 04:27:04PM +0800, Troy Mitchell wrote: >> From: Guodong Xu >> - Memory addressing capabilities: Unlike the K1 SoC, which had memory ad= dressing >> limitations (e.g., restricted to the 0-4GB space) and required a dedic= ated >> dma-bus with dma-ranges to restrict memory allocations, the K3 DMA mas= ters >> possess full memory addressing capabilities. > > Programming interface is still compatible, regardless of memory > addressing limitations, so that is rather incorrect reason. I'll remove this item. Thanks. - Troy > > Best regards, > Krzysztof