From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pg1-f180.google.com (mail-pg1-f180.google.com [209.85.215.180]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id CCEF42C21E6 for ; Mon, 11 May 2026 06:38:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.215.180 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778481525; cv=none; b=iytbxrk68QS6XomVDinhq5m1zhqrLRWjeru7I1K/O8uBQbfnX5GyjTGTyod1CHMZh3Jbt0rmI/g/E5uhiLPgxPYkltK3NZ4UgqY0h7YNBRZPjQPJAK7TsSaWbDJU2D3mJ/RF5I4RdghHemYuUsB/d8RMksDDmOzr5hdQRI97zJ8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778481525; c=relaxed/simple; bh=yvzklUqCUgxletwdYULmVQM5JhvPwFFqwslMNk2qNBI=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=Y9HaCmzq2D/aMNwHl7KrEMcEBTi15SKGbYOOMOrl6khqgWbNSJZe6h6u30gy37GZm6rpv/s4zXbETSCV0zHGTGDdBkAbV+2M36zKHWE4kWoINZ6kv/dWCF59laUSSf38AvaJxuTcAyqNciTq7glCnAibM5EHf+WjgrbmQtLhSM0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=DQvh9Mr1; arc=none smtp.client-ip=209.85.215.180 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="DQvh9Mr1" Received: by mail-pg1-f180.google.com with SMTP id 41be03b00d2f7-c828daf83e2so271309a12.2 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=vger.kernel.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=DQvh9Mr11ioBD7Qh5Zv/GsK30h3KOBPLIjDm6eDBoFfBJHd8RoxHB0qF7JOX/aGl9n t+clAais7K91HagNelKRmt0Qmhn5U7YT8wJ4rpLAKzTZ+np4npTmyDjAgx2+lm4vSTRg YQen+ekmDeutAcXVzfGMMevESBIclHx4hKeHuzBWSa0rBEy65FmQ0d/XdiFXGyU33+w+ mE3TEvw6+1DacUX5gq4Q0un4YAwXGTJMHh73E7OqZh1Po45MQXkf7GrhUMrO/FRPx11p R8j14n7yXvN2iBhNBI8+4/X7z85MdH4iS6ke9XXvYtrWT3c9qRQak+WHf2rDEu86qXKO 4vlw== 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=S0DZHiqPiRqdbeodm11OJi+0kbw7OZiuAebtJK/AhPdBc28zATcGDyr5YhjTg5Ut15 NPEVFxHEDboODqI0OwIQJ/7QYHwwlkc5qDAuCXrk428ffzD7N2Ju1wHLdeglcZn/XiwL HKVx3TWAbGPx/LODLzpQPyBzPMWGFpl6dl+S3aExJyBtd5nrRPNq/1VaPYPjsztF31LS hoDgaKWs4++JrJEKY9orOMQO9Sc5sTHGl0ISZ/iM494pjhGfy0uJ8qY9XHb+4WLS2S4U ABcns/v69pty5vfGkov6doE7/GFmmc+ozxzeeDDvWNiHckumYBBuTnvk83iniC7PVn7H XjBw== X-Forwarded-Encrypted: i=1; AFNElJ/aiFJ33Tw5HIH2WRVPsHTmlbzCdBo+0Fyz8V8ryXUky18q9P5dI/lDLq2+i5MMq1ZyJJZpwWGYxZg//+s=@vger.kernel.org X-Gm-Message-State: AOJu0Yxmz69+/pEwhX2F9b/FnxzWz/CokEv2x7zQS8h6pV0eQBrMM2aF /C8R2vznVwgxOiS/KyptEpNyUCEbbv2HqnrI/6qEt+2eJN+LjoSp0GY1 X-Gm-Gg: Acq92OHbSDnfI3+Cpt4XvP5PbSHL38pG+qkgAQ5b+4J/KTvMU3ouDJLUCnV3y/asjE+ JcqNPGKie/T1dxYWcwwifv2IqlOouvUnpe1JVjSPqBLnqaSME/VGGkEZr3OeBJRY6iQ6pxHAc2m jRfdolLyGcQgodRYPHg1w+moIRbilmRmVS5QGyQiKzNRz7jGSWie6OGu9wGgZIzPCPH7zkLWbjb zK60XAZltnf593CZIjNIlFyP2UUP35+7xL1ptoLknJBtCAT3vMqc8dsoAa6rwbiEP8Xpcp7iFrn z22wCikuMEaC90OeGayiaHvGXrqavBAQXscmfrLxMfsFljHr0hhUf30oXIY4g2DxSfd58SR4HdW RiVQRJ/uojXyZbaOJQBgcrfOBeCN6U8HP1+Yolp4TZYulVWnXzUbXia+6SHmMzDPe7TcXj+px4Q 0fsvG5wz6eZrpCzB2uLjoosYs= 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 Precedence: bulk X-Mailing-List: linux-kernel@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