From patchwork Mon Jan 17 01:35:27 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zong Li X-Patchwork-Id: 12714704 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 2BFB0C433EF for ; Mon, 17 Jan 2022 01:35:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236787AbiAQBfq (ORCPT ); Sun, 16 Jan 2022 20:35:46 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:32774 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236758AbiAQBfl (ORCPT ); Sun, 16 Jan 2022 20:35:41 -0500 Received: from mail-pg1-x530.google.com (mail-pg1-x530.google.com [IPv6:2607:f8b0:4864:20::530]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DCB07C06173E for ; Sun, 16 Jan 2022 17:35:40 -0800 (PST) Received: by mail-pg1-x530.google.com with SMTP id r135so6062638pgr.6 for ; Sun, 16 Jan 2022 17:35:40 -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=P+GoisCraOgxlHu4ekz372AMVjqGk0k3oxAotFVY+JXZ1wKhghK/9VUBiHjSULBAuP YT4wwsz1owUO6iPKiWsGy1oGSOL98t8npnafFRWj4DEjOXLcNTXLnrLnipNYmy/X/59V zv0G3qMbqQOTkecphSBHdfCzauar+Qn4EvJPR8jFtiEevja0Dtfpo2IarctGfKHjFxDk RDRT+OUyc72T9apyF/om+OYvNxSz/TyAz0HE3JwmeR91oHCM5yiG8rB9AraAmv3V5Uyr V34ti5X4PUmue5qVTDpJii8D9glNa22wkQgNu9rqk8ukaXF1h0hiqtROVWDQaiPGjKfM 7mFw== 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=XLzpILjswo3eaBzkUmqXevFb6hOH+SYuMAQufZLKtrgYywH5ev+VooLJEFA/vCWeuh UEZqw7yAc9JmLu03E4UFXwW8Z8uQZHzkMMlPjg4BMFMJ+gHQfmE5x1ihhqhvkeIXVMLL hMXBgMMse8C+AbrWSXwr+dS0GvC08afMN3wuZzG1Q0Ytlp3QgVnuKghBTejFD0qZAq2C xRt1OgVMFuQCcmcLlxakzDRrF00BBneePhiGPznsDgU5XMMW5ESe3lvP5rL+PdirKsJ8 IQXvS/6IVTNPQGFnl362teGEBFHAaPIXGNCskes7VVBCAuG4AWgL2Z8qf9+0fSfdBZDJ 61Gw== X-Gm-Message-State: AOAM531J3s0+v69/ht8kD1ecbCLwu55s/c0oOPWn2N1LrRoF64VcHxc3 3n1hJCMqXKqqfkbq28jEGGMaZQ== X-Google-Smtp-Source: ABdhPJzYYuCt8lJjXiFcWFdBW421Oc4GF3QS64Lff1lAlXxFDNO5aZc7/9nqJvZybIZwWwo2dzrwBQ== X-Received: by 2002:a63:284:: with SMTP id 126mr16642095pgc.328.1642383340489; Sun, 16 Jan 2022 17:35:40 -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 l1sm10008335pgn.35.2022.01.16.17.35.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 16 Jan 2022 17:35:39 -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 v4 2/3] dt-bindings: Add dma-channels for pdma device node Date: Mon, 17 Jan 2022 09:35:27 +0800 Message-Id: <5db314b798cd9cfcb5cb61bc56515220b7d50315.1642383007.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>; };