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Stavinskii" Cc: dmaengine@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, sophgo@lists.linux.dev, linux-riscv@lists.infradead.org, Yixun Lan Subject: [PATCH v6 0/2] riscv: sophgo: allow DMA multiplexer set channel number for DMA controller Date: Mon, 11 May 2026 14:38:15 +0800 Message-ID: <20260511063818.463877-1-inochiama@gmail.com> X-Mailer: git-send-email 2.54.0 Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit As the DMA controller on Sophgo CV1800 series SoC only has 8 channels, the SoC provides a dma multiplexer to reuse the DMA channel. However, the dma multiplexer also controlls the DMA interrupt multiplexer, which means that the dma multiplexer needs to know the channel number. Change the DMA phandle args parsing logic so it can use handshake number as channel number if necessary. This patch series add fallback compatiable according to the disscussion. Link: https://lore.kernel.org/all/MA5PR01MB1250079A8884D4F6245B955B9FE51A@MA5PR01MB12500.INDPRD01.PROD.OUTLOOK.COM Change from v5: - https://lore.kernel.org/all/20260426012921.673953-1-inochiama@gmail.com 1. Add dt-bindings patch for fallback compatiable 2. patch 2: Adapt the binding change. Change from v4: - https://lore.kernel.org/all/20260225104042.1138901-1-inochiama@gmail.com/ 1. drop patch 1 and patch 2 as they are merged 2. Add ABI break statement and clarification for this patch. Change from v3: - https://lore.kernel.org/all/20260120013706.436742-1-inochiama@gmail.com/ 1. rebase to v7.0-rc1 2. patch 1: Apply Conor's tag 3. patch 2: Apply Frank's tag Change from v2: - https://lore.kernel.org/all/20251214224601.598358-1-inochiama@gmail.com/ 1. patch 2: rename "AXI_DMA_FLAG_HANDSHAKE_AS_CHAN" to "ARG0_AS_CHAN" Change from v1: - https://lore.kernel.org/all/20251212020504.915616-1-inochiama@gmail.com/ 1. rebase to v6.19-rc1 2. patch 1: remove a comment placed in wrong place. 3. patch 2: fix typo in comments. 4. patch 2: initialize chan as NULL in dw_axi_dma_of_xlate. Inochi Amaoto (2): dt-bindings: dma: snps,dw-axi-dmac: Add fallback compatible for CV1800B riscv: dts: sophgo: cv180x: Allow the DMA multiplexer to set channel number for DMA controller Documentation/devicetree/bindings/dma/snps,dw-axi-dmac.yaml | 5 +++-- arch/riscv/boot/dts/sophgo/cv180x.dtsi | 2 +- 2 files changed, 4 insertions(+), 3 deletions(-) -- 2.54.0 From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id DD340CD37B5 for ; Mon, 11 May 2026 06:38:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-ID:Date:Subject:Cc :To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=Lk0R1wscbkLMtAjGuo2DVoaESjlBqIiRbNR2rL6NJNw=; b=rv1RslKF7pw0DQ 9biKmfrDxCCSpKngDYBHxkG1L3oKvCIsuOB3FmI4E/fw2P1ZI9pAUwwhpfMwzBa3rpbdh6NcI7No3 Jp0TpwO4TcDAYXzPhv0sRvELYZq+M9NsNBMBXA/UQdlH//l6DGoNKwAErQ8FnTl6zCkLhCsJmqs3Q oGAiNvISYKrjnMJL0sX+V6NFBw12W8z2smQPYLweHk+qj96VQv8HVlP3stde3uG/5eQ7mkUWQ5GGM VD+R4X+onm9SCznY7UIsJGu5iVGR1vKOabYJpzKW0Ho3VZq7MaN0tzliRythMkpBpnKnDAZf/yWC+ Haxd4eGKspyQez+2QTTQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wMKHv-0000000CVbV-1E9f; Mon, 11 May 2026 06:38:47 +0000 Received: from mail-pg1-x52a.google.com ([2607:f8b0:4864:20::52a]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wMKHs-0000000CVad-0rY0 for linux-riscv@lists.infradead.org; Mon, 11 May 2026 06:38:45 +0000 Received: by mail-pg1-x52a.google.com with SMTP id 41be03b00d2f7-c7ffe8eeaf2so1535044a12.0 for ; Sun, 10 May 2026 23:38:43 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1778481523; x=1779086323; darn=lists.infradead.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=VrHfqxO5zQWaRSbwjGtMUupsuspxAHrjR7FaYDhyfhQ=; b=P2ecuiBmyf5LbH4KnZLFk//tJlo/7HyqC/sxm41T6B+kZqdUTh2vgROH6y0XKqvk3I 1ccuUF+WbmzHLnzTd7nNtQ8cmBqZbiBttslMg7hHHtqcTizP17z8RA6Cf7fqo3Qyq7cc zP1ZO+v5tBP/wCJZvlm+OD3PTAnAzw1pAH1yNijldG2YSgkMwfH6gawsPBw8hnjKK1nr e159td76z7tJwl14f7+2m/mWP/sQKl8nzxR/UzcxUNtijyZqrf2NnRfm6BIOFC9wUDe2 wX4HGl7LBge44AtMLkB2cYuhBMLR3iNTF2RKz7uYuhG8H8RACezp6mYd5G8H/vLioOVY REmw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1778481523; x=1779086323; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-gg:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=VrHfqxO5zQWaRSbwjGtMUupsuspxAHrjR7FaYDhyfhQ=; b=N7zCS5vtGzmUsk+I34FSku7+T+Wrhy5pt1ahmkQaXZC33BXYlaZWjI7Yko9sEu6EY5 7pXXPR8JYgxNv7OdPn9t4LvBUP7bE1tzAkHxsZl66Wz2nVfQ+t4Zh26qKsbRDpidytrm wf/C1bRZ1cXwWM3HErTa43TFMDeysVZ7RzdhN/zYcHH9bxkV2Q9JQwdoqcYnU9/bbJ3z fsu1WsV8cgdlHLkNM4GIBIgzBDde+O1oZpGPoP6B+rRYl8bFLEubgfC5jdIlfvWHbd2l ZxpSzyFX92LBWj7a3xsfRA0x/IIDSrgX3lCdeUpOcEENk06qVuueIEtq80ZM/XuZVf83 Rh8w== X-Forwarded-Encrypted: i=1; AFNElJ8aZo9Xbu/RxoKAcrgNT3dgkk3rm1k86cV4+WJSwelKQw2OJ66fZLfEVXrdtUhwlhfW7YCXUJxeP50jaA==@lists.infradead.org X-Gm-Message-State: AOJu0YzdPXmCAh1CdNk5od4R2ulfNnfwNc8EYB0meLkr6Wpg+U4QA2yM 7LprMp0qXGOA9Gqz1fxczGvS+dIl6GYh4AbGq5Z2HyLoGgHbsMzRBFXa X-Gm-Gg: Acq92OE8paIAcZdgk99a7MN3DxT2Il1YhkbTGJEGHGn34H/UKqO9iZmgNcXwubJFUKZ PgB2xeFi2oOHiZfZqiRDeFUJo5Zc+r6bM4FkLPrVbTe4JpJ5Hx/VaRxXLZ11Yzyo4mlLQDv7hJS XF+douERvE992OCiPNq8vK+df6J0SmoG05zsZqyqVmTyA0BNsy4B6TVXDCdSOz/gTLv5fh2S8sI duVFnKcBY6Rij75r2RazqIPXZIvQXS1ZearRYVeBF7lECLcpeLnizJppVd/C0YU4g+PcxvQ9riK L+8kgF36TVdJ7T8muVtsLXm60hHFNmmRXo3sLG2bLsJL81tQzyWwjieWgW+PXx2K1vnDmu6C7s6 5veAH6nTQKuJA7/7WwNPs6KuEL0+1U8kJXKpu/jIMbtfAszRnOe9zrNZaB0irgSZtppPBRFgVCP IfJ9/T/7uHQvkvVEJMIiHESoQ= X-Received: by 2002:a05:6a21:9983:b0:3a2:7ef4:81df with SMTP id adf61e73a8af0-3aa5ab71a24mr24213272637.26.1778481523036; Sun, 10 May 2026 23:38:43 -0700 (PDT) Received: from localhost ([2001:19f0:8001:1b2d:5400:5ff:fefa:a95d]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-c826767be0csm8409174a12.2.2026.05.10.23.38.42 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 10 May 2026 23:38:42 -0700 (PDT) From: Inochi Amaoto To: Eugeniy Paltsev , Vinod Koul , Frank Li , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Chen Wang , Inochi Amaoto , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti , Alexander Sverdlin , Longbin Li , Yixun Lan , "Anton D. Stavinskii" Cc: dmaengine@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, sophgo@lists.linux.dev, linux-riscv@lists.infradead.org, Yixun Lan Subject: [PATCH v6 0/2] riscv: sophgo: allow DMA multiplexer set channel number for DMA controller Date: Mon, 11 May 2026 14:38:15 +0800 Message-ID: <20260511063818.463877-1-inochiama@gmail.com> X-Mailer: git-send-email 2.54.0 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260510_233844_249803_7346F143 X-CRM114-Status: GOOD ( 11.20 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org As the DMA controller on Sophgo CV1800 series SoC only has 8 channels, the SoC provides a dma multiplexer to reuse the DMA channel. However, the dma multiplexer also controlls the DMA interrupt multiplexer, which means that the dma multiplexer needs to know the channel number. Change the DMA phandle args parsing logic so it can use handshake number as channel number if necessary. This patch series add fallback compatiable according to the disscussion. Link: https://lore.kernel.org/all/MA5PR01MB1250079A8884D4F6245B955B9FE51A@MA5PR01MB12500.INDPRD01.PROD.OUTLOOK.COM Change from v5: - https://lore.kernel.org/all/20260426012921.673953-1-inochiama@gmail.com 1. Add dt-bindings patch for fallback compatiable 2. patch 2: Adapt the binding change. Change from v4: - https://lore.kernel.org/all/20260225104042.1138901-1-inochiama@gmail.com/ 1. drop patch 1 and patch 2 as they are merged 2. Add ABI break statement and clarification for this patch. Change from v3: - https://lore.kernel.org/all/20260120013706.436742-1-inochiama@gmail.com/ 1. rebase to v7.0-rc1 2. patch 1: Apply Conor's tag 3. patch 2: Apply Frank's tag Change from v2: - https://lore.kernel.org/all/20251214224601.598358-1-inochiama@gmail.com/ 1. patch 2: rename "AXI_DMA_FLAG_HANDSHAKE_AS_CHAN" to "ARG0_AS_CHAN" Change from v1: - https://lore.kernel.org/all/20251212020504.915616-1-inochiama@gmail.com/ 1. rebase to v6.19-rc1 2. patch 1: remove a comment placed in wrong place. 3. patch 2: fix typo in comments. 4. patch 2: initialize chan as NULL in dw_axi_dma_of_xlate. Inochi Amaoto (2): dt-bindings: dma: snps,dw-axi-dmac: Add fallback compatible for CV1800B riscv: dts: sophgo: cv180x: Allow the DMA multiplexer to set channel number for DMA controller Documentation/devicetree/bindings/dma/snps,dw-axi-dmac.yaml | 5 +++-- arch/riscv/boot/dts/sophgo/cv180x.dtsi | 2 +- 2 files changed, 4 insertions(+), 3 deletions(-) -- 2.54.0 _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv