From patchwork Fri Jun 23 14:09:43 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Olivier Moysan X-Patchwork-Id: 13290668 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 05B46EB64DD for ; Fri, 23 Jun 2023 14:14:14 +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:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id: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=EfQiXnLmpdD+nrlciDWqCUup1Ov3JWHhEqIZ5PVbiE0=; b=UMmURi7PEqmJqr hoBJ0hmq8YKsvKaSJ1DaxI2cXE6dT1zDYNb9FFDczyraf8dEgl+E8rzXeTeZsZ1+C7Sgk0mdpfqYm LDRWndf9+GxEjJO+y80MJsM9m8l4zP0SUXOaaKa2kDeVkhRMCOEJSNg+vnh5rUL934ACW584W/4Eg z6ZHJWG/XLmTevpJq/OLv1cpLnAEJNtwaKfF7wbTQ1I+1MEr4bermJUistUbsLsBI/D1ffs0uFpO1 zakRVdNqwbwKHDqKfcAnskxsrXUjRAvOUFatNPxFCk8qntp4VGGOLhPa+EM4uRviaLkTBCa8spkhn AZzpENKYbZvVT/r5zDKg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qChXp-003jDd-0N; Fri, 23 Jun 2023 14:13:49 +0000 Received: from mx07-00178001.pphosted.com ([185.132.182.106]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qChXe-003jAZ-20 for linux-arm-kernel@lists.infradead.org; Fri, 23 Jun 2023 14:13:40 +0000 Received: from pps.filterd (m0288072.ppops.net [127.0.0.1]) by mx07-00178001.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 35ND3Ss3032052; Fri, 23 Jun 2023 16:13:32 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=foss.st.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-transfer-encoding : content-type; s=selector1; bh=n7CnWGQap5G34zSVoJPQnyZJhA8mpXd2NmvWCwOewAw=; b=XtZ1w1ERDw5a3hKxJ6p8KQ0X9vB4G+cNJoItjibOB/BCZwEPFxr6TQXOTUmpsQ+svapw AWhB7meZjZTrzpc9zozV0ViwUAd9rn1gdCJCs5olaXmGSMdob2w2mQ9j0+nS01pAyqLY cIxppKbSneGlJ8NQz8nO0UEMi3yfkYgsxf39Ui7tzuQDc2AoyZn6mH8WMi32WtCt75Bq 4z8TwRxTDl8fXbIBNmssdHDllVOM4877qOXjfSqxVV6OgatmmfT57ZycsMrYNxnWK57n lOK3ozRZf8wTvkODFQ81jGpUyDawj2ijDRtC3b4kOzkMqPt4a8UsLJlt6g0d7PiU89jI eA== Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx07-00178001.pphosted.com (PPS) with ESMTPS id 3rd6mab0tg-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 23 Jun 2023 16:13:32 +0200 Received: from euls16034.sgp.st.com (euls16034.sgp.st.com [10.75.44.20]) by beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 0917310002A; Fri, 23 Jun 2023 16:13:32 +0200 (CEST) Received: from Webmail-eu.st.com (shfdag1node1.st.com [10.75.129.69]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id 012E322D170; Fri, 23 Jun 2023 16:13:32 +0200 (CEST) Received: from localhost (10.252.5.198) 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 15.1.2507.21; Fri, 23 Jun 2023 16:13:31 +0200 From: Olivier Moysan To: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Maxime Coquelin , Alexandre Torgue CC: Olivier Moysan , , , , Subject: [RFC PATCH 7/7] ARM: dts: stm32: add dfsdm iio suppport Date: Fri, 23 Jun 2023 16:09:43 +0200 Message-ID: <20230623140944.2613002-8-olivier.moysan@foss.st.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230623140944.2613002-1-olivier.moysan@foss.st.com> References: <20230623140944.2613002-1-olivier.moysan@foss.st.com> MIME-Version: 1.0 X-Originating-IP: [10.252.5.198] X-ClientProxiedBy: EQNCAS1NODE4.st.com (10.75.129.82) To SHFDAG1NODE1.st.com (10.75.129.69) X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.957,Hydra:6.0.591,FMLib:17.11.176.26 definitions=2023-06-23_08,2023-06-22_02,2023-05-22_02 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230623_071338_950631_8EF7E19A X-CRM114-Status: GOOD ( 14.62 ) 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 This DT is an example of backend iio device use for STM32 DFSDM. DFSDM filter0 has a single input channel, while filter1 is configured for scan mode with two input channels. Signed-off-by: Olivier Moysan --- arch/arm/boot/dts/stm32mp157c-ev1.dts | 62 +++++++++++++++++++++++++++ 1 file changed, 62 insertions(+) diff --git a/arch/arm/boot/dts/stm32mp157c-ev1.dts b/arch/arm/boot/dts/stm32mp157c-ev1.dts index ba8e9d9a42fa..ebd67a219df2 100644 --- a/arch/arm/boot/dts/stm32mp157c-ev1.dts +++ b/arch/arm/boot/dts/stm32mp157c-ev1.dts @@ -73,6 +73,24 @@ panel_backlight: panel-backlight { default-on; status = "okay"; }; + + sd_adc0: simple-sd-adc0 { + compatible = "sd-modulator"; + io-backend-cells = <0>; + vref-supply = <&v3v3>; + }; + + sd_adc1: simple-sd-adc1 { + compatible = "sd-modulator"; + io-backend-cells = <0>; + vref-supply = <&v3v3>; + }; + + sd_adc2: simple-sd-adc2 { + compatible = "sd-modulator"; + io-backend-cells = <0>; + vref-supply = <&v3v3>; + }; }; &cec { @@ -99,6 +117,50 @@ dcmi_0: endpoint { }; }; +&dfsdm { + spi-max-frequency = <2048000>; + + clocks = <&rcc DFSDM_K>, <&rcc ADFSDM_K>; + clock-names = "dfsdm", "audio"; + status = "disabled"; + + dfsdm0: filter@0 { + compatible = "st,stm32-dfsdm-adc"; + st,filter-order = <3>; + status = "okay"; + + channel@1 { + reg = <1>; + label = "in1"; + st,adc-channel-types = "SPI_R"; + st,adc-channel-clk-src = "CLKOUT"; + io-backend = <&sd_adc0>; + }; + }; + + dfsdm1: filter@1 { + compatible = "st,stm32-dfsdm-adc"; + st,filter-order = <3>; + status = "okay"; + + channel@2 { + reg = <2>; + label = "in2"; + st,adc-channel-types = "SPI_R"; + st,adc-channel-clk-src = "CLKOUT"; + io-backend = <&sd_adc1>; + }; + + channel@3 { + reg = <3>; + label = "in3"; + st,adc-channel-types = "SPI_F"; + st,adc-channel-clk-src = "CLKOUT"; + io-backend = <&sd_adc2>; + }; + }; +}; + &dsi { phy-dsi-supply = <®18>; status = "okay";