From patchwork Mon Mar 7 12:21:58 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Codrin Ciubotariu X-Patchwork-Id: 12771713 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 alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id A673BC433EF for ; Mon, 7 Mar 2022 12:24:29 +0000 (UTC) Received: from alsa1.perex.cz (alsa1.perex.cz [207.180.221.201]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by alsa0.perex.cz (Postfix) with ESMTPS id D70771706; Mon, 7 Mar 2022 13:23:37 +0100 (CET) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz D70771706 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1646655867; bh=0TQozHfB8UTWKE6wf2o0Hvd8wf+stI5/pPPDsrXJk3o=; h=From:To:Subject:Date:In-Reply-To:References:Cc:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=K5w9b+PV0CXALDdetyNmcVOS2eUgTfUJEi7Qxv4YtXuAjsVCIAVhD2bsmJIiwj94a PBcEG3Dfn/9j1N0zWwEHaurGZo7HD/HoYXB2TbEzHGIxHHVZ0Hp8lg2xVpQGtyNoeq 2GRa/m06hC5nn2jkeoeb9Frhcn+QljjoTPnjXu9A= Received: from alsa1.perex.cz (localhost.localdomain [127.0.0.1]) by alsa1.perex.cz (Postfix) with ESMTP id B64DAF80515; Mon, 7 Mar 2022 13:22:59 +0100 (CET) Received: by alsa1.perex.cz (Postfix, from userid 50401) id 8C57BF8051B; Mon, 7 Mar 2022 13:22:58 +0100 (CET) Received: from esa.microchip.iphmx.com (esa.microchip.iphmx.com [68.232.153.233]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by alsa1.perex.cz (Postfix) with ESMTPS id 2EB7CF80515 for ; Mon, 7 Mar 2022 13:22:50 +0100 (CET) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz 2EB7CF80515 Authentication-Results: alsa1.perex.cz; dkim=pass (2048-bit key) header.d=microchip.com header.i=@microchip.com header.b="rKS9LtW4" DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1646655773; x=1678191773; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=0TQozHfB8UTWKE6wf2o0Hvd8wf+stI5/pPPDsrXJk3o=; b=rKS9LtW4uyojfRG969fcILDE+HLrgCUVrqcsPsDmlsxmAWH3tqdGWPpU 47L/7YhBmK06XuEVYFVrWsdXxndP8Om+jY6jtleVR7Z1kgP8xrdSwnZc4 ZNmpmv4hSg2RMjRxbv3c/rekU3Mk7Z3ltscz6Wq+BTgVc4fk05Glkd4p0 wRfOH8FaCQ5J15LdsL6g963CaXyX7Ayz1nhKBgzDdjTP4ollUHNvsFtxT /u8Dt15PkgTfXmL1LlnvH2cgVrnAy2EDSqssqUDSnj+ehnJRda2e+JBDl wMsEqijyjBS33ITvuB46p5hxznX9FAay4L758NZIvD+HV7gappMFYWsgW g==; X-IronPort-AV: E=Sophos;i="5.90,162,1643698800"; d="scan'208";a="155942223" Received: from smtpout.microchip.com (HELO email.microchip.com) ([198.175.253.82]) by esa3.microchip.iphmx.com with ESMTP/TLS/AES256-SHA256; 07 Mar 2022 05:22:48 -0700 Received: from chn-vm-ex04.mchp-main.com (10.10.85.152) by chn-vm-ex02.mchp-main.com (10.10.85.144) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.17; Mon, 7 Mar 2022 05:22:47 -0700 Received: from rob-ult-m19940.amer.actel.com (10.10.115.15) by chn-vm-ex04.mchp-main.com (10.10.85.152) with Microsoft SMTP Server id 15.1.2375.17 via Frontend Transport; Mon, 7 Mar 2022 05:22:45 -0700 From: Codrin Ciubotariu To: , , , Subject: [PATCH v3 2/6] ASoC: dt-bindings: Document Microchip's PDMC Date: Mon, 7 Mar 2022 14:21:58 +0200 Message-ID: <20220307122202.2251639-3-codrin.ciubotariu@microchip.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20220307122202.2251639-1-codrin.ciubotariu@microchip.com> References: <20220307122202.2251639-1-codrin.ciubotariu@microchip.com> MIME-Version: 1.0 Cc: lars@metafoo.de, nicolas.ferre@microchip.com, robh+dt@kernel.org, tiwai@suse.com, broonie@kernel.org, Codrin Ciubotariu X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.15 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" Add DT bindings for the new Microchip PDMC embedded in sama7g5 SoCs. Signed-off-by: Codrin Ciubotariu Reviewed-by: Krzysztof Kozlowski --- Changes in v3: - set line length to 80 characters long - set 'reg' as the second property Changes in v2: - renamed patch from 'ASoC: add DT bindings for Microchip PDMC' to 'ASoC: dt-bindings: Document Microchip's PDMC'; - renamed yaml file from 'mchp,pdmc.yaml' to 'microchip,pdmc.yaml'; - used imperative mode in commit description; - renamed mchp,pdmc.h to microchip,pdmc.h; - fixed 'title' to represent HW; - made 'compatible' first property; - s/microhpone/microphone - none name in example set to 'sound' .../bindings/sound/microchip,pdmc.yaml | 100 ++++++++++++++++++ include/dt-bindings/sound/microchip,pdmc.h | 13 +++ 2 files changed, 113 insertions(+) create mode 100644 Documentation/devicetree/bindings/sound/microchip,pdmc.yaml create mode 100644 include/dt-bindings/sound/microchip,pdmc.h diff --git a/Documentation/devicetree/bindings/sound/microchip,pdmc.yaml b/Documentation/devicetree/bindings/sound/microchip,pdmc.yaml new file mode 100644 index 000000000000..04414eb4ada9 --- /dev/null +++ b/Documentation/devicetree/bindings/sound/microchip,pdmc.yaml @@ -0,0 +1,100 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/sound/microchip,pdmc.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Microchip Pulse Density Microphone Controller + +maintainers: + - Codrin Ciubotariu + +description: + The Microchip Pulse Density Microphone Controller (PDMC) interfaces up to 4 + digital microphones having Pulse Density Modulated (PDM) outputs. + +properties: + compatible: + const: microchip,sama7g5-pdmc + + reg: + maxItems: 1 + + "#sound-dai-cells": + const: 0 + + interrupts: + maxItems: 1 + + clocks: + items: + - description: Peripheral Bus Clock + - description: Generic Clock + + clock-names: + items: + - const: pclk + - const: gclk + + dmas: + description: RX DMA Channel + maxItems: 1 + + dma-names: + const: rx + + microchip,mic-pos: + description: | + Position of PDM microphones on the DS line and the sampling edge (rising + or falling) of the CLK line. A microphone is represented as a pair of DS + line and the sampling edge. The first microphone is mapped to channel 0, + the second to channel 1, etc. + $ref: /schemas/types.yaml#/definitions/uint32-matrix + items: + items: + - description: value for DS line + - description: value for sampling edge + anyOf: + - enum: + - [0, 0] + - [0, 1] + - [1, 0] + - [1, 1] + minItems: 1 + maxItems: 4 + uniqueItems: true + +required: + - compatible + - reg + - "#sound-dai-cells" + - interrupts + - clocks + - clock-names + - dmas + - dma-names + - microchip,mic-pos + +additionalProperties: false + +examples: + - | + #include + #include + #include + #include + + pdmc: sound@e1608000 { + compatible = "microchip,sama7g5-pdmc"; + reg = <0xe1608000 0x4000>; + #sound-dai-cells = <0>; + interrupts = ; + dmas = <&dma0 AT91_XDMAC_DT_PERID(37)>; + dma-names = "rx"; + clocks = <&pmc PMC_TYPE_PERIPHERAL 68>, <&pmc PMC_TYPE_GCK 68>; + clock-names = "pclk", "gclk"; + microchip,mic-pos = , + , + , + ; + }; diff --git a/include/dt-bindings/sound/microchip,pdmc.h b/include/dt-bindings/sound/microchip,pdmc.h new file mode 100644 index 000000000000..96cde94ce74f --- /dev/null +++ b/include/dt-bindings/sound/microchip,pdmc.h @@ -0,0 +1,13 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __DT_BINDINGS_MICROCHIP_PDMC_H__ +#define __DT_BINDINGS_MICROCHIP_PDMC_H__ + +/* PDM microphone's pin placement */ +#define MCHP_PDMC_DS0 0 +#define MCHP_PDMC_DS1 1 + +/* PDM microphone clock edge sampling */ +#define MCHP_PDMC_CLK_POSITIVE 0 +#define MCHP_PDMC_CLK_NEGATIVE 1 + +#endif /* __DT_BINDINGS_MICROCHIP_PDMC_H__ */