From patchwork Thu Jun 20 17:56:33 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Piotr Wojtaszczyk X-Patchwork-Id: 806085 Received: from mail-ej1-f44.google.com (mail-ej1-f44.google.com [209.85.218.44]) (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 911901CB302 for ; Thu, 20 Jun 2024 17:58:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.218.44 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718906303; cv=none; b=MgvFPAhqqsCcxMCEN1+Du7P7B7QkfgPjQkhUrkPO9+D6E1C64jOkp6AOdA+91xvVZPgzSpF0F94Eh1ViMXAPnJpVveNt4yaz0maTQBeYni1280N/IrcgD+Q48GgOkYwIH/bPt1NVvOGkgTq8atyO0g5ZQLHruJiIW9KHQ7/xa0Y= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718906303; c=relaxed/simple; bh=qFS8dbUIltaliP34b4s9iOYNBl/H/n7Qhca0kv+Esfk=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=VsRLL8hW/LWGnExSnClvX3z5/GfoXuE+jLnrQ2GPSgbUn/aCJHQL1n9xaJ9u3oMDU11WoFERNsZCNRaga+yrElxOG4AtbGVaTfFUpdXAI8ITqhEKlzLp8sWSq7ElwKpw4yKXTIm+Tr6QkAM5cuAX/8/Ry/RltmDJZuOJXCHIGOY= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=timesys.com; spf=pass smtp.mailfrom=timesys.com; dkim=pass (2048-bit key) header.d=timesys-com.20230601.gappssmtp.com header.i=@timesys-com.20230601.gappssmtp.com header.b=cFhihpqE; arc=none smtp.client-ip=209.85.218.44 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=timesys.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=timesys.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=timesys-com.20230601.gappssmtp.com header.i=@timesys-com.20230601.gappssmtp.com header.b="cFhihpqE" Received: by mail-ej1-f44.google.com with SMTP id a640c23a62f3a-a6f21ff4e6dso173235966b.3 for ; Thu, 20 Jun 2024 10:58:21 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=timesys-com.20230601.gappssmtp.com; s=20230601; t=1718906300; x=1719511100; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=Dj3DX12QYavc1OOQJN+Lhj+prqOyJf9zJxwWhTZ5aE8=; b=cFhihpqEGSNaDlRMjYIJJTJjiUfXMDt8wlISE1cdQN6o8aLt7JcEnbBwLJYm+MzkjB aMRm9e2UVA2H0OcRC/SXhT1JbDDQZLt2PdAwqORJ4GQTwimbp8fd4Y3hnpe0ImpJlICU KsLyycXIsU0m1O9wegcwMXBPUMwH99id/ixXP1LZC7xvWb5B1BmJSSEX+0OD3/fIBe4a M3fHOCAIWgzazbcTTsce+XJAgqvzbR4pn7pkvGslaytZB/LtQhyYEcx/OXb6RUOT/4JY c32cltnnt4RhIo8A8Gas6qRcvWv7hE6rFo651SmNsqjJoCnkGmcxxqCqaqealzbUQTfl l69w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1718906300; x=1719511100; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=Dj3DX12QYavc1OOQJN+Lhj+prqOyJf9zJxwWhTZ5aE8=; b=wM+7POaTbazQZ1HJ0tHOJ+gtMvMH70EmmtgHAZnADokMqzWiupnr7tuIN7Q8LIpvs5 mVR/S7e4PfLTXyZPnAhrLmjZExS/3mkNlVC28SGa7jwVDnoKvaEtJKKX1dtlJHHRx28+ 5wnZjhWT8yOU19rwp4A06YU0ByGEsErlUmqaO4YIsj6xE6bqMclX9QOeAqU5tytnp65H eGdURbLNlKQa6m4T7ilbUKFRA2h4/L0bktQgi6M3BGqUgs1PlswcoER/CA/WmKr48NoA wW1d/5H2GfcbAq1DGRrlN3wML0JflczIp8n4tEN9sVRWv+uXwbpAqt2VgrqQ80J2akVt z+Aw== X-Forwarded-Encrypted: i=1; AJvYcCWfA5MauFH3FPhSvhiS+7jusstvrhm+HYbYkgJoPzeVJV1XiTjkqENGT4CikqonkHL+TGB25m36CYmtqV75budY38vsoFfc0Oim X-Gm-Message-State: AOJu0YxZArYqkSZfTC2+d02rLF3hTIebHAwWx7CRfHKutdSWVM6j5IH+ D/dY9VS+aQywoWYcpl9KDt/O+aEwS49MTpKpdGLcpTsvu+KRMy39eRUdkuz6tgE= X-Google-Smtp-Source: AGHT+IEhPPFEKagTHzQMOwX7NrYh9+xyhRsxpQErqvlswtZC5Lb/tm5y+kINO8slxfzNDjQFWUOp4Q== X-Received: by 2002:a17:907:a646:b0:a6f:5192:6f4d with SMTP id a640c23a62f3a-a6fab60321fmr428721866b.8.1718906299800; Thu, 20 Jun 2024 10:58:19 -0700 (PDT) Received: from localhost.localdomain ([91.216.213.152]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-a6f56f42e80sm781370766b.186.2024.06.20.10.58.18 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 20 Jun 2024 10:58:19 -0700 (PDT) From: Piotr Wojtaszczyk To: Vinod Koul , Rob Herring , Krzysztof Kozlowski , Conor Dooley , "J.M.B. Downing" , Piotr Wojtaszczyk , Vladimir Zapolskiy , Liam Girdwood , Mark Brown , Russell King , Michael Turquette , Stephen Boyd , Andi Shyti , Miquel Raynal , Richard Weinberger , Vignesh Raghavendra , Jaroslav Kysela , Takashi Iwai , Yangtao Li , Arnd Bergmann , Li Zetao , Michael Ellerman , Chancel Liu , dmaengine@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, alsa-devel@alsa-project.org, linuxppc-dev@lists.ozlabs.org, linux-sound@vger.kernel.org, linux-clk@vger.kernel.org, linux-i2c@vger.kernel.org, linux-mtd@lists.infradead.org Cc: Markus Elfring Subject: [Patch v4 02/10] dt-bindings: dma: Add lpc32xx DMA mux binding Date: Thu, 20 Jun 2024 19:56:33 +0200 Message-Id: <20240620175657.358273-3-piotr.wojtaszczyk@timesys.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20240620175657.358273-1-piotr.wojtaszczyk@timesys.com> References: <20240620175657.358273-1-piotr.wojtaszczyk@timesys.com> Precedence: bulk X-Mailing-List: linux-i2c@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 LPC32XX SoCs use pl080 dma controller which have few request signals multiplexed between peripherals. This binding describes how devices can use the multiplexed request signals. Signed-off-by: Piotr Wojtaszczyk --- Changes for v4: - This patch is new in v4 .../bindings/dma/nxp,lpc3220-dmamux.yaml | 56 +++++++++++++++++++ MAINTAINERS | 9 +++ 2 files changed, 65 insertions(+) create mode 100644 Documentation/devicetree/bindings/dma/nxp,lpc3220-dmamux.yaml diff --git a/Documentation/devicetree/bindings/dma/nxp,lpc3220-dmamux.yaml b/Documentation/devicetree/bindings/dma/nxp,lpc3220-dmamux.yaml new file mode 100644 index 000000000000..a5384b6c67fc --- /dev/null +++ b/Documentation/devicetree/bindings/dma/nxp,lpc3220-dmamux.yaml @@ -0,0 +1,56 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/dma/nxp,lpc3220-dmamux.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: DMA multiplexer for LPC32XX SoC (DMA request router) + +maintainers: + - J.M.B. Downing + - Piotr Wojtaszczyk + +allOf: + - $ref: dma-router.yaml# + +properties: + "#dma-cells": + const: 3 + description: | + First two cells same as for device pointed in dma-masters. + Third cell represents mux value for the request. + + compatible: + const: nxp,lpc3220-dmamux + + dma-masters: + description: phandle to a dma node compatible with arm,pl080 + + reg: + maxItems: 1 + +required: + - compatible + - reg + - dma-masters + +additionalProperties: false + +examples: + - | + syscon@40004000 { + compatible = "nxp,lpc3220-creg", "syscon", "simple-mfd"; + reg = <0x40004000 0x114>; + ranges = <0 0x40004000 0x114>; + #address-cells = <1>; + #size-cells = <1>; + + dma-router@7c { + compatible = "nxp,lpc3220-dmamux"; + reg = <0x7c 0x8>; + #dma-cells = <3>; + dma-masters = <&dma>; + }; + }; + +... diff --git a/MAINTAINERS b/MAINTAINERS index aacccb376c28..f7adf9f66dfa 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -2396,6 +2396,15 @@ F: drivers/usb/host/ohci-nxp.c F: drivers/watchdog/pnx4008_wdt.c N: lpc32xx +ARM/LPC32XX DMAMUX SUPPORT +M: J.M.B. Downing +M: Piotr Wojtaszczyk +R: Vladimir Zapolskiy +L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers) +S: Maintained +F: Documentation/devicetree/bindings/dma/nxp,lpc3220-dmamux.yaml +N: lpc32xx + ARM/Marvell Dove/MV78xx0/Orion SOC support M: Andrew Lunn M: Sebastian Hesselbarth