From patchwork Fri Mar 4 18:17:52 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Codrin Ciubotariu X-Patchwork-Id: 12769776 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 848A8C433EF for ; Fri, 4 Mar 2022 18:19:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=SqLtgUIuInwyHiIwE5yln5qW8o3zMxWYgYRZsCvy9cs=; b=WAFxQwH9wijkAd OgCtEeYBoLZ1AxJ8cZltUZBQEsSGfdTtPqwATaElioV2R9Miyjz2sOU1mvRnkbT8/rm/9UkKCNKG4 6owZqbyHbfSgUDVkc58K0g3+KnC+/HXSDnYIMAguJwM7TqPyDgBIZay6ZeB893Wx3vdRBNGr9cdTX 9s4CL2EzcHIf416fShhZjWYudzQJ1cMmPOJdZLL3LjHsr3YXrT1/nJs+cGBO7Zbc8r4zJpHqXYdP+ oD8vjNt4vSY3/XdBHNKKmPB7QevvAtp77CN8FUoGrHjYn+7W6i7eIOzF4UOD8wWVk5ikomfHresd7 cvUsVIEFOjvjzsIexrRA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nQCVs-00BaF3-WC; Fri, 04 Mar 2022 18:18:49 +0000 Received: from esa.microchip.iphmx.com ([68.232.153.233]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nQCVT-00Ba4f-NP for linux-arm-kernel@lists.infradead.org; Fri, 04 Mar 2022 18:18:30 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1646417903; x=1677953903; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=HCvFluqtT037DesTFX4Yr11Hb1/YSGRgoeD+/8CiSrw=; b=T0zmbz6rw0ntgrIwfSyjcgrPWzL7mySWCt81zaSJYlTpou/DXEmHuIZF Lxn6wugTUN08lyvLxIRUM8j65vNCyn8675aVXckS3WL6L5zR2jMERgRVZ vS6pz4izKFqJCVpEpT5KiFHJuEXxCyMbFu43GafFWt8Wi57HOoGC9FBIE 8fmyFgSmsQUKOFn4ZLh/nZXlOLjEBSMxEUT+M4fRVsBpwxSJzFbmje+Ha 79/0iJYFWvbV2Ki1Oo0ZwIZvmtwCRgBcQAvNu1N/ZSWIag6gLqBYSaQi3 TU191fmN3scb+JaHo8st3uGsrNsDEZcTHzUL/qRaEB+6lSVkio3IPEjU3 g==; X-IronPort-AV: E=Sophos;i="5.90,155,1643698800"; d="scan'208";a="155759066" Received: from smtpout.microchip.com (HELO email.microchip.com) ([198.175.253.82]) by esa3.microchip.iphmx.com with ESMTP/TLS/AES256-SHA256; 04 Mar 2022 11:18:22 -0700 Received: from chn-vm-ex03.mchp-main.com (10.10.85.151) by chn-vm-ex04.mchp-main.com (10.10.85.152) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.17; Fri, 4 Mar 2022 11:18:22 -0700 Received: from rob-ult-m19940.amer.actel.com (10.10.115.15) by chn-vm-ex03.mchp-main.com (10.10.85.151) with Microsoft SMTP Server id 15.1.2375.17 via Frontend Transport; Fri, 4 Mar 2022 11:18:20 -0700 From: Codrin Ciubotariu To: , , , Subject: [PATCH 2/6] ASoC: add DT bindings for Microchip PDMC Date: Fri, 4 Mar 2022 20:17:52 +0200 Message-ID: <20220304181756.1894561-3-codrin.ciubotariu@microchip.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20220304181756.1894561-1-codrin.ciubotariu@microchip.com> References: <20220304181756.1894561-1-codrin.ciubotariu@microchip.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220304_101823_846732_F5519FB9 X-CRM114-Status: GOOD ( 14.88 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: lars@metafoo.de, robh+dt@kernel.org, tiwai@suse.com, broonie@kernel.org, Codrin Ciubotariu , perex@perex.cz Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org This patch adds DT bindings for the new Microchip PDMC embedded in sama7g5 SoCs. Signed-off-by: Codrin Ciubotariu --- .../devicetree/bindings/sound/mchp,pdmc.yaml | 99 +++++++++++++++++++ include/dt-bindings/sound/mchp,pdmc.h | 13 +++ 2 files changed, 112 insertions(+) create mode 100644 Documentation/devicetree/bindings/sound/mchp,pdmc.yaml create mode 100644 include/dt-bindings/sound/mchp,pdmc.h diff --git a/Documentation/devicetree/bindings/sound/mchp,pdmc.yaml b/Documentation/devicetree/bindings/sound/mchp,pdmc.yaml new file mode 100644 index 000000000000..bdf5c52c29d9 --- /dev/null +++ b/Documentation/devicetree/bindings/sound/mchp,pdmc.yaml @@ -0,0 +1,99 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/sound/mchp,pdmc.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Microchip PDMC Device Tree Bindings + +maintainers: + - Codrin Ciubotariu + +description: + The Microchip Pulse Density Microphone Controller (PDMC) interfaces up to 4 digital microphones + having Pulse Density Modulated (PDM) outputs. + +properties: + "#sound-dai-cells": + const: 0 + + compatible: + const: microchip,sama7g5-pdmc + + reg: + maxItems: 1 + + 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 + microhpone 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: + - "#sound-dai-cells" + - compatible + - reg + - interrupts + - clocks + - clock-names + - dmas + - dma-names + - microchip,mic-pos + +additionalProperties: false + +examples: + - | + #include + #include + #include + #include + + pdmc: pdmc@e1608000 { + #sound-dai-cells = <0>; + compatible = "microchip,sama7g5-pdmc"; + reg = <0xe1608000 0x4000>; + 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/mchp,pdmc.h b/include/dt-bindings/sound/mchp,pdmc.h new file mode 100644 index 000000000000..543c424a5a6f --- /dev/null +++ b/include/dt-bindings/sound/mchp,pdmc.h @@ -0,0 +1,13 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __DT_BINDINGS_MCHP_PDMC_H__ +#define __DT_BINDINGS_MCHP_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_MCHP_PDMC_H__ */