From patchwork Tue Jan 11 08:51:26 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zong Li X-Patchwork-Id: 12709633 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 00488C433F5 for ; Tue, 11 Jan 2022 08:51:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1349026AbiAKIvr (ORCPT ); Tue, 11 Jan 2022 03:51:47 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35532 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1349032AbiAKIvp (ORCPT ); Tue, 11 Jan 2022 03:51:45 -0500 Received: from mail-pj1-x1031.google.com (mail-pj1-x1031.google.com [IPv6:2607:f8b0:4864:20::1031]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1B247C061748 for ; Tue, 11 Jan 2022 00:51:45 -0800 (PST) Received: by mail-pj1-x1031.google.com with SMTP id pj2so16014751pjb.2 for ; Tue, 11 Jan 2022 00:51:45 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sifive.com; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=95yOM2oPjDW4I8teUQkYRlUXa8kIk+GmIx7gO72jBTY=; b=GpMh6fkVqVZnpQ6fScwSciNnWMkmNTtU1WgST8+pCoVLTfgXeKSZPYogUkpsxz6FF8 +/WpAxttfOV5TjT30xKEvL0rMlmogZOvL5ugDuwDo5eKo/S6U/EinZ6A+7O7Wj/MZ7Qu 9VLER8etNMkI5H/6yhxTf83SOM8KvmMuHHqNR7mFTlu6mj8BQoLXQ2Oh7zlInW8SZdVb fp4+SLidAPI2J9gB0om53xk/hHNTonmlL56uac8Nqo+p7Ww3v4YCmeBNPdfehubbB50E sbzbwr4fsRxt56wcVkdGZMa97wM7wATjjeQ7Gfmj7HA75e0HSHt0woJkskypzV61D4KB oj1g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=95yOM2oPjDW4I8teUQkYRlUXa8kIk+GmIx7gO72jBTY=; b=AkQP0QouJodiGa1icDjiNXFhr1xDaemqATFv/aPTCea6VrrOXd+uNxXBn78FCwUExt 830JlAVzPn1eQMd4EI5yj0QXooKcrMOvl+VPItPq7hABZIzwWBl7jhduS+YKRUMAC2Az GW7u89j81gOBGUoUbPadfi4HH5D2o1smNa089vc3g0B7S3RbCpvwViqBl5zbnIK1I37Q 74FLBpxtfzdvh16+xnt5w7lMRC8HSd0ut63jEPABS1gYdbzgxZly3+zD1yDJWPyj67H3 ctpeg2VsXCP08xNBhITrI1R9GzJ7sqtWn9cD5LjNdiW2aiFDyiZyv0N5ovdCkstoekwB B/zg== X-Gm-Message-State: AOAM531UB90YchyPYunbi+RhN6MLwVKIPSLY94JENo5Al43bMs8G1Raz cu+RGmgDLOxqxEsj07dvK4m/8g== X-Google-Smtp-Source: ABdhPJxlbSxnGg4ihJcp7ofYvFqtVX8rwXaySdYUqfwyOnXJUtvZ0NiapTjTqylZZvzzNHeBMF6Y+A== X-Received: by 2002:a17:90a:578b:: with SMTP id g11mr2051970pji.76.1641891104660; Tue, 11 Jan 2022 00:51:44 -0800 (PST) Received: from hsinchu16.internal.sifive.com (59-124-168-89.hinet-ip.hinet.net. [59.124.168.89]) by smtp.gmail.com with ESMTPSA id j4sm9447598pfa.149.2022.01.11.00.51.41 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 11 Jan 2022 00:51:44 -0800 (PST) From: Zong Li To: robh+dt@kernel.org, paul.walmsley@sifive.com, palmer@dabbelt.com, aou@eecs.berkeley.edu, krzysztof.kozlowski@canonical.com, conor.dooley@microchip.com, geert@linux-m68k.org, bin.meng@windriver.com, green.wan@sifive.com, vkoul@kernel.org, dmaengine@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org Cc: Zong Li Subject: [PATCH v2 2/3] dt-bindings: Add dma-channels for pdma device node Date: Tue, 11 Jan 2022 16:51:26 +0800 Message-Id: <5db314b798cd9cfcb5cb61bc56515220b7d50315.1641890718.git.zong.li@sifive.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: References: MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: dmaengine@vger.kernel.org Add dma-channels property, then we can determine how many channels there by device tree, rather than statically defines it in PDMA driver Signed-off-by: Zong Li --- .../devicetree/bindings/dma/sifive,fu540-c000-pdma.yaml | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/Documentation/devicetree/bindings/dma/sifive,fu540-c000-pdma.yaml b/Documentation/devicetree/bindings/dma/sifive,fu540-c000-pdma.yaml index d32a71b975fe..3dbb8caefc17 100644 --- a/Documentation/devicetree/bindings/dma/sifive,fu540-c000-pdma.yaml +++ b/Documentation/devicetree/bindings/dma/sifive,fu540-c000-pdma.yaml @@ -34,6 +34,12 @@ properties: minItems: 1 maxItems: 8 + dma-channels: + description: For backwards-compatible, the default value is 4 + minimum: 1 + maximum: 4 + default: 4 + '#dma-cells': const: 1 @@ -50,6 +56,7 @@ examples: dma@3000000 { compatible = "sifive,fu540-c000-pdma"; reg = <0x3000000 0x8000>; + dma-channels = <4>; interrupts = <23 24 25 26 27 28 29 30>; #dma-cells = <1>; };