From patchwork Tue Jun 18 16:08:30 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Olivier MOYSAN X-Patchwork-Id: 13702663 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 89D4AC27C4F for ; Tue, 18 Jun 2024 16:12:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Type: Content-Transfer-Encoding:MIME-Version:References:In-Reply-To:Message-ID:Date :Subject:CC:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=mt4jA5DmMOxU5cEiI40uNpQZdbSX0OU07yEosb4wrjs=; b=fWXE6EqB9rnVXJDGHN931H/rhV 6JJBWWdOowrnUnS7zWsuEKWfBKcKjHwMmGrBcyHJk6aFLXfeJluuu1hSqTfCc7NBgqY7S6oh47qdi MBZHWeV0CZAFPKWiO3AMP1g2198XC7u+8EJakR0SzB90TRLACWdzr6MD7BVePmOWLdHlXetF8iPZX 2OnAUdT86QQnIydFseNgcT3Nu5qREVc9aHbrn8N3EOoAIJ8rAlR5VFIolmU2jmI2hsQiWb8xGknHT ZAm0cE2+3lvFCNHpnxcHebH5D02GM6zD9pWYYEjxiP5CxF1WKH6cWhIW4lZnRWU98nPvCV8FeUZkB hiwyTxLw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1sJbQz-0000000FmZQ-2daf; Tue, 18 Jun 2024 16:11:49 +0000 Received: from mx07-00178001.pphosted.com ([185.132.182.106]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1sJbQe-0000000FmLM-3HME for linux-arm-kernel@lists.infradead.org; Tue, 18 Jun 2024 16:11:34 +0000 Received: from pps.filterd (m0288072.ppops.net [127.0.0.1]) by mx07-00178001.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 45IF4uJW031745; Tue, 18 Jun 2024 18:11:20 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=foss.st.com; h= cc:content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s=selector1; bh= mt4jA5DmMOxU5cEiI40uNpQZdbSX0OU07yEosb4wrjs=; b=zmUxWSyUaWPyD1f4 nUMXNuHMstF5QGTrQlEQ5/Dxm7qGtodUfeVC6Vl8+lAvHCyUmY2tnfvvx0//qyvz Sou+XG4yxp11ifnGz5e/h0/5DPPO7HiEg9p58KGPMDujdA9KcGcPITaAgjGAK37W ZplON2yYkxFu7v5SpmPnRl3urPt+nMIdPDM8i4uxo4xPu6/b/KvroeQa5qC2FkjW UoUTIDiWCWAqjeFmhrxJeD4zBnudM1dqjhSRvUaX6+4V92Do/BDhQGs/0v1HdrZt t3JZBxpE7h0KNP82l7IcgWZZiMZsU0quVSkIt0zSA2T6XxDCUYwFKRCoR/OqRmHk iL3DVw== Received: from beta.dmz-ap.st.com (beta.dmz-ap.st.com [138.198.100.35]) by mx07-00178001.pphosted.com (PPS) with ESMTPS id 3ys0cgca63-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 18 Jun 2024 18:11:19 +0200 (MEST) Received: from euls16034.sgp.st.com (euls16034.sgp.st.com [10.75.44.20]) by beta.dmz-ap.st.com (STMicroelectronics) with ESMTP id AA77E4002D; Tue, 18 Jun 2024 18:11:15 +0200 (CEST) Received: from Webmail-eu.st.com (shfdag1node1.st.com [10.75.129.69]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id 1A8D421D385; Tue, 18 Jun 2024 18:10:27 +0200 (CEST) Received: from localhost (10.252.27.64) by SHFDAG1NODE1.st.com (10.75.129.69) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.35; Tue, 18 Jun 2024 18:10:26 +0200 From: Olivier Moysan To: Olivier Moysan , Arnaud Pouliquen , Jonathan Cameron , Lars-Peter Clausen , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Maxime Coquelin , Alexandre Torgue , Fabrice Gasnier CC: , , , , , Subject: [PATCH 4/8] dt-bindings: iio: dfsdm: move to backend framework Date: Tue, 18 Jun 2024 18:08:30 +0200 Message-ID: <20240618160836.945242-5-olivier.moysan@foss.st.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20240618160836.945242-1-olivier.moysan@foss.st.com> References: <20240618160836.945242-1-olivier.moysan@foss.st.com> MIME-Version: 1.0 X-Originating-IP: [10.252.27.64] X-ClientProxiedBy: SHFCAS1NODE2.st.com (10.75.129.73) To SHFDAG1NODE1.st.com (10.75.129.69) X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.28.16 definitions=2024-06-18_02,2024-06-17_01,2024-05-17_01 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240618_091129_305003_5E2472F1 X-CRM114-Status: GOOD ( 15.61 ) 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: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Change the DFSDM binding to use the new IIO backend framework, along with the adoption of IIO generic channels. This binding change allows to add scaling support to the DFSDM. Keep the legacy binding as deprecated for backward compatibility. The io-backends property is supported only in generic IIO channel binding. - Channel description with the generic binding (Audio and Analog): Properties supersed by generic properties: st,adc-channels: becomes "reg" property in channel node st,adc-channel-names: becomes "label" property in channel node Properties moved to channel child node: st,adc-channel-types, st,adc-channel-clk-src, st,adc-alt-channel - Analog binding: DFSDM filter channel is configured as an IIO backend consumer. Add io-backends property in channel child nodes. DFSDM is no more configured as a channel consumer from SD modulator. Use of io-channels in DFSDM node is deprecated. - Audio binding: DFSDM audio DAI is configured as a channel consumer from DFSDM filter. No change compare to legacy. Signed-off-by: Olivier Moysan --- .../bindings/iio/adc/st,stm32-dfsdm-adc.yaml | 158 +++++++++++++++++- 1 file changed, 152 insertions(+), 6 deletions(-) diff --git a/Documentation/devicetree/bindings/iio/adc/st,stm32-dfsdm-adc.yaml b/Documentation/devicetree/bindings/iio/adc/st,stm32-dfsdm-adc.yaml index c1b1324fa132..dd414bab74c1 100644 --- a/Documentation/devicetree/bindings/iio/adc/st,stm32-dfsdm-adc.yaml +++ b/Documentation/devicetree/bindings/iio/adc/st,stm32-dfsdm-adc.yaml @@ -102,9 +102,11 @@ patternProperties: items: minimum: 0 maximum: 7 + deprecated: true st,adc-channel-names: description: List of single-ended channel names. + deprecated: true st,filter-order: description: | @@ -118,6 +120,12 @@ patternProperties: "#io-channel-cells": const: 1 + '#address-cells': + const: 1 + + '#size-cells': + const: 0 + st,adc-channel-types: description: | Single-ended channel input type. @@ -128,6 +136,7 @@ patternProperties: items: enum: [ SPI_R, SPI_F, MANCH_R, MANCH_F ] $ref: /schemas/types.yaml#/definitions/non-unique-string-array + deprecated: true st,adc-channel-clk-src: description: | @@ -139,6 +148,7 @@ patternProperties: items: enum: [ CLKIN, CLKOUT, CLKOUT_F, CLKOUT_R ] $ref: /schemas/types.yaml#/definitions/non-unique-string-array + deprecated: true st,adc-alt-channel: description: @@ -147,6 +157,7 @@ patternProperties: If not set, channel n is connected to SPI input n. If set, channel n is connected to SPI input n + 1. type: boolean + deprecated: true st,filter0-sync: description: @@ -165,11 +176,65 @@ patternProperties: - compatible - reg - interrupts - - st,adc-channels - - st,adc-channel-names - st,filter-order - "#io-channel-cells" + patternProperties: + "^channel@([0-9]|1[0-9])$": + type: object + $ref: adc.yaml + description: Represents the external channels which are connected to the DFSDM. + + properties: + reg: + items: + minimum: 0 + maximum: 8 + + label: + description: + Unique name to identify which channel this is. + + st,adc-channel-types: + description: | + Single-ended channel input type. + - "SPI_R": SPI with data on rising edge (default) + - "SPI_F": SPI with data on falling edge + - "MANCH_R": manchester codec, rising edge = logic 0, falling edge = logic 1 + - "MANCH_F": manchester codec, rising edge = logic 1, falling edge = logic 0 + items: + enum: [ SPI_R, SPI_F, MANCH_R, MANCH_F ] + $ref: /schemas/types.yaml#/definitions/non-unique-string-array + + st,adc-channel-clk-src: + description: | + Conversion clock source. + - "CLKIN": external SPI clock (CLKIN x) + - "CLKOUT": internal SPI clock (CLKOUT) (default) + - "CLKOUT_F": internal SPI clock divided by 2 (falling edge). + - "CLKOUT_R": internal SPI clock divided by 2 (rising edge). + items: + enum: [ CLKIN, CLKOUT, CLKOUT_F, CLKOUT_R ] + $ref: /schemas/types.yaml#/definitions/non-unique-string-array + + st,adc-alt-channel: + description: + Must be defined if two sigma delta modulators are + connected on same SPI input. + If not set, channel n is connected to SPI input n. + If set, channel n is connected to SPI input n + 1. + type: boolean + + io-backends: + description: + From common IIO binding. Used to pipe external sigma delta + modulator or internal ADC backend to DFSDM channel. + + required: + - reg + + additionalProperties: false + allOf: - if: properties: @@ -199,9 +264,19 @@ patternProperties: description: From common IIO binding. Used to pipe external sigma delta modulator or internal ADC output to DFSDM channel. + deprecated: true - required: - - io-channels + if: + required: + - st,adc-channels + then: + required: + - io-channels + + patternProperties: + "^channel@([0-9]|1[0-9])$": + required: + - io-backends - if: properties: @@ -294,7 +369,77 @@ examples: #address-cells = <1>; #size-cells = <0>; + // Example 1: Audio use case with generic binding dfsdm0: filter@0 { + compatible = "st,stm32-dfsdm-dmic"; + reg = <0>; + interrupts = ; + dmas = <&dmamux1 101 0x400 0x01>; + dma-names = "rx"; + #io-channel-cells = <1>; + #address-cells = <1>; + #size-cells = <0>; + st,filter-order = <5>; + + channel@1 { + reg = <1>; + label = "dmic0"; + st,adc-channel-types = "SPI_R"; + st,adc-channel-clk-src = "CLKOUT"; + st,adc-alt-channel; + }; + + asoc_pdm0: dfsdm-dai { + compatible = "st,stm32h7-dfsdm-dai"; + #sound-dai-cells = <0>; + io-channels = <&dfsdm0 0>; + }; + }; + + // Example 1: Analog use case with generic binding + dfsdm1: filter@1 { + compatible = "st,stm32-dfsdm-adc"; + reg = <1>; + interrupts = ; + dmas = <&dmamux1 102 0x400 0x01>; + dma-names = "rx"; + st,filter-order = <1>; + #io-channel-cells = <1>; + #address-cells = <1>; + #size-cells = <0>; + + channel@2 { + reg = <2>; + label = "in2"; + st,adc-channel-types = "SPI_F"; + st,adc-channel-clk-src = "CLKOUT"; + st,adc-alt-channel; + io-backends = <&sd_adc2>; + }; + + channel@3 { + reg = <3>; + label = "in3"; + st,adc-channel-types = "SPI_R"; + st,adc-channel-clk-src = "CLKOUT"; + io-backends = <&sd_adc3>; + }; + }; + }; + + - | + #include + #include + dfsdm_2: dfsdm@4400d000 { + compatible = "st,stm32mp1-dfsdm"; + reg = <0x4400d000 0x800>; + clocks = <&rcc DFSDM_K>, <&rcc ADFSDM_K>; + clock-names = "dfsdm", "audio"; + #address-cells = <1>; + #size-cells = <0>; + + // Example 3: Audio use case with legacy binding + dfsdm0_2: filter@0 { compatible = "st,stm32-dfsdm-dmic"; reg = <0>; interrupts = ; @@ -307,14 +452,15 @@ examples: st,adc-channel-clk-src = "CLKOUT"; st,filter-order = <5>; - asoc_pdm0: dfsdm-dai { + asoc_pdm0_2: dfsdm-dai { compatible = "st,stm32h7-dfsdm-dai"; #sound-dai-cells = <0>; io-channels = <&dfsdm0 0>; }; }; - dfsdm_pdm1: filter@1 { + // Example 3: Analog use case with legacy binding + dfsdm1_2: filter@1 { compatible = "st,stm32-dfsdm-adc"; reg = <1>; interrupts = ;