From patchwork Fri Jun 16 13:57:31 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Olivier MOYSAN X-Patchwork-Id: 9791731 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 2CCD560326 for ; Fri, 16 Jun 2017 13:59:40 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 36B6228646 for ; Fri, 16 Jun 2017 13:59:40 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 2B5E72864C; Fri, 16 Jun 2017 13:59:40 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.1 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_NONE, RDNS_NONE autolearn=no version=3.3.1 Received: from alsa0.perex.cz (unknown [77.48.224.243]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 6EB8F28646 for ; Fri, 16 Jun 2017 13:59:39 +0000 (UTC) Received: from alsa.alsa-project.org (localhost [127.0.0.1]) by alsa0.perex.cz (Postfix) with ESMTP id 44651267505; Fri, 16 Jun 2017 15:58:28 +0200 (CEST) X-Original-To: alsa-devel@alsa-project.org Delivered-To: alsa-devel@alsa-project.org Received: by alsa0.perex.cz (Postfix, from userid 1000) id 737682674F2; Fri, 16 Jun 2017 15:57:44 +0200 (CEST) Received: from mx07-00178001.pphosted.com (mx08-00178001.pphosted.com [91.207.212.93]) by alsa0.perex.cz (Postfix) with ESMTP id 094E42669F3 for ; Fri, 16 Jun 2017 15:57:39 +0200 (CEST) Received: from pps.filterd (m0046660.ppops.net [127.0.0.1]) by mx08-.pphosted.com (8.16.0.21/8.16.0.21) with SMTP id v5GDs1m7000915; Fri, 16 Jun 2017 15:57:38 +0200 Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx08-.pphosted.com with ESMTP id 2b3ahjbmek-1 (version=TLSv1 cipher=ECDHE-RSA-AES256-SHA bits=256 verify=NOT); Fri, 16 Jun 2017 15:57:38 +0200 Received: from zeta.dmz-eu.st.com (zeta.dmz-eu.st.com [164.129.230.9]) by beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id DBB4234; Fri, 16 Jun 2017 13:57:36 +0000 (GMT) Received: from Webmail-eu.st.com (Safex1hubcas21.st.com [10.75.90.44]) by zeta.dmz-eu.st.com (STMicroelectronics) with ESMTP id A32D8DB5; Fri, 16 Jun 2017 13:57:36 +0000 (GMT) Received: from localhost (10.201.23.16) by Webmail-ga.st.com (10.75.90.48) with Microsoft SMTP Server (TLS) id 14.3.339.0; Fri, 16 Jun 2017 15:57:36 +0200 From: olivier moysan To: , , , , , , , , , , , , , Date: Fri, 16 Jun 2017 15:57:31 +0200 Message-ID: <1497621452-615-2-git-send-email-olivier.moysan@st.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1497621452-615-1-git-send-email-olivier.moysan@st.com> References: <1497621452-615-1-git-send-email-olivier.moysan@st.com> MIME-Version: 1.0 X-Originating-IP: [10.201.23.16] X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:, , definitions=2017-06-16_08:, , signatures=0 Cc: arnaud.pouliquen@st.com, benjamin.gaignard@st.com Subject: [alsa-devel] [PATCH 1/2] dt-bindings: Document the STM32 SPDIFRX interface X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: alsa-devel-bounces@alsa-project.org X-Virus-Scanned: ClamAV using ClamSMTP This adds documentation of device tree bindings for the STM32 SPDIFRX interface. Signed-off-by: olivier moysan --- .../devicetree/bindings/sound/st,stm32-spdifrx.txt | 56 ++++++++++++++++++++++ 1 file changed, 56 insertions(+) create mode 100644 Documentation/devicetree/bindings/sound/st,stm32-spdifrx.txt diff --git a/Documentation/devicetree/bindings/sound/st,stm32-spdifrx.txt b/Documentation/devicetree/bindings/sound/st,stm32-spdifrx.txt new file mode 100644 index 0000000..33826f2 --- /dev/null +++ b/Documentation/devicetree/bindings/sound/st,stm32-spdifrx.txt @@ -0,0 +1,56 @@ +STMicroelectronics STM32 S/PDIF receiver (SPDIFRX). + +The SPDIFRX peripheral, is designed to receive an S/PDIF flow compliant with +IEC-60958 and IEC-61937. + +Required properties: + - compatible: should be "st,stm32h7-spdifrx" + - reg: cpu DAI IP base address and size + - clocks: must contain an entry for kclk (used as S/PDIF signal reference) + - clock-names: must contain "kclk" + - interrupts: cpu DAI interrupt line + - dmas: DMA specifiers for audio data DMA and iec control flow DMA + See STM32 DMA bindings, Documentation/devicetree/bindings/dma/stm32-dma.txt + - dma-names: two dmas have to be defined, "rx" and "rx-ctrl" + +Optional properties: + - resets: Reference to a reset controller asserting the SPDIFRX + +The device node should contain one 'port' child node with one child 'endpoint' +node, according to the bindings defined in Documentation/devicetree/bindings/ +graph.txt. + +Example: +spdifrx: spdifrx@40004000 { + compatible = "st,stm32h7-spdifrx"; + reg = <0x40004000 0x400>; + clocks = <&rcc SPDIFRX_CK>; + clock-names = "kclk"; + interrupts = <97>; + dmas = <&dmamux1 2 93 0x400 0x0>, + <&dmamux1 3 94 0x400 0x0>; + dma-names = "rx", "rx-ctrl"; + pinctrl-0 = <&spdifrx_pins>; + pinctrl-names = "default"; + + spdifrx_port: port { + cpu_endpoint: endpoint { + remote-endpoint = <&codec_endpoint>; + }; + }; +}; + +spdif_in: spdif-in { + compatible = "linux,spdif-dir"; + + codec_port: port { + codec_endpoint: endpoint { + remote-endpoint = <&cpu_endpoint>; + }; + }; +}; + +soundcard { + compatible = "audio-graph-card"; + dais = <&spdifrx_port>; +};