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Fri, 3 Sep 2021 14:53:54 +0000 From: Daniel Baluta To: broonie@kernel.org, pierre-louis.bossart@linux.intel.com, lgirdwood@gmail.com, robh+dt@kernel.org, ranjani.sridharan@linux.intel.com, kai.vehmanen@linux.intel.com Cc: devicetree@vger.kernel.org, shawnguo@kernel.org, kernel@pengutronix.de, festevam@gmail.com, linux-imx@nxp.com, peter.ujfalusi@linux.intel.com, alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org, s-anna@ti.com, Daniel Baluta Subject: [PATCH v2 0/2] Add code to manage DSP related clocks Date: Fri, 3 Sep 2021 17:53:38 +0300 Message-Id: <20210903145340.225511-1-daniel.baluta@oss.nxp.com> X-Mailer: git-send-email 2.27.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-ClientProxiedBy: VI1PR07CA0200.eurprd07.prod.outlook.com (2603:10a6:802:3f::24) To VI1PR04MB5151.eurprd04.prod.outlook.com (2603:10a6:803:61::28) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from localhost.localdomain (2a02:2f08:5708:8600:fd8d:b9e7:97b5:dd4a) by VI1PR07CA0200.eurprd07.prod.outlook.com (2603:10a6:802:3f::24) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4500.4 via Frontend Transport; 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DSP node on the Linux kernel side must also take care of enabling DAI/DMA related clocks. By design we choose to manage DAI/DMA clocks from the kernel side because of the architecture of some i.MX8 boards. Clocks are handled by a special M4 core which runs a special firmware called SCFW (System Controler firmware). This communicates with A cores running Linux via a special Messaging Unit and implements a custom API which is already implemented by the Linux kernel i.MX clocks implementation. Note that these clocks are optional. We can use the DSP without them. Changes since v1: - used clk bulk API as suggested by mark Daniel Baluta (2): ASoC: SOF: imx: Add code to manage DSP related clocks dt-bindings: dsp: fsl: Add DSP optional clocks documentation .../devicetree/bindings/dsp/fsl,dsp.yaml | 33 ++++++++++++++ sound/soc/sof/imx/imx-common.c | 44 +++++++++++++++++++ sound/soc/sof/imx/imx-common.h | 13 ++++++ sound/soc/sof/imx/imx8.c | 37 ++++++++++++++++ sound/soc/sof/imx/imx8m.c | 34 ++++++++++++++ 5 files changed, 161 insertions(+) -- 2.27.0