From patchwork Wed Sep 28 16:41:06 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Olivier Moysan X-Patchwork-Id: 12992588 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 268F3C54EE9 for ; Wed, 28 Sep 2022 16:44:17 +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: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:In-Reply-To:References: List-Owner; bh=g0ZY8dWmmDTGqY2Kxx3ePsr9WecUgpZj3WwR9EKvyJg=; b=4mYBwPzJm/tDd5 cQ8Q4WCqaiCTzKWohWM4HwYL5sP13HB5x4Kn9jRqQB/rzuaGhyHe9dH8wcc6vW+oB/ykfFLzjdlEd VR7cOU/YLb0WRmYs2nn/fcycs6iqh/eW5HskRqI7ebjTYvRaEabDGmLxpJf93dI/0zorKbm/Iir2B L/BX8APpZFSxn/C1OftHeoaeAjhWbMwPHU9ndlni9fV8qJdMULOgjbpe1Mx4ZUQqes1cmpI78SwxJ 36fdrAk52hP6XdYWhIJaaxw4aE+n3mHx10kQ7st4Y0fQga6KukPL2n0PsZJSywzEN0dg/1Jovtipr SmNA87aSKrPLNNJl1g8g==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1oda9K-00H9hC-T8; Wed, 28 Sep 2022 16:43:07 +0000 Received: from mx07-00178001.pphosted.com ([185.132.182.106]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1oda8i-00H9TQ-NN for linux-arm-kernel@lists.infradead.org; Wed, 28 Sep 2022 16:42:31 +0000 Received: from pps.filterd (m0288072.ppops.net [127.0.0.1]) by mx07-00178001.pphosted.com (8.17.1.5/8.17.1.5) with ESMTP id 28SGQFUd020655; Wed, 28 Sep 2022 18:41:54 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=foss.st.com; h=from : to : cc : subject : date : message-id : mime-version : content-transfer-encoding : content-type; s=selector1; bh=8lFpwLfBQhp/XHXOjmu6ATzSxtmoz+37E9iy2AZS3+E=; b=UOJtE9FmesbLBtzsQTw0MiOp5z554TUi5DyKrFC6wvq5h3DnVPmSQ0V8OtPpsnjtY5HN +09G5ghyaeJbHF8nWBnKPDXRIGyNRFVmuo9tAnfctHlwYxktJe9U3bcj8+K8Kp9J28XY bRz5QcbJxtj8cpMqdQANKUWW+JJav2d2klKr3WphRvkr6fmN/qOKqMf2ya2U1HEgf0Fu 2bVPBtbs+F+kMEj3UIqoVk5R1s9C+xiU/5WBmCpIajl7i2xmz7FpLl1zqycbEjhymg5Q 6Wo+WiZdhPqLiiQRkwW8jkN6tivUBkwz03TwvOr2O6dWCzxyhIzL6tckFUxoyYepac3f gw== 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 3jsqamj87a-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 28 Sep 2022 18:41:53 +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 1B90010002A; Wed, 28 Sep 2022 18:41:51 +0200 (CEST) Received: from Webmail-eu.st.com (shfdag1node1.st.com [10.75.129.69]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id EAA0D23C6B2; Wed, 28 Sep 2022 18:41:51 +0200 (CEST) Received: from localhost (10.75.127.116) by SHFDAG1NODE1.st.com (10.75.129.69) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256) id 15.1.2375.31; Wed, 28 Sep 2022 18:41:51 +0200 From: Olivier Moysan To: Alexandre Torgue , Andy Shevchenko , Fabrice Gasnier , Jonathan Cameron , Lars-Peter Clausen , Maxime Coquelin , , Olivier Moysan , Paul Cercueil , Sebastian Andrzej Siewior , Wan Jiabing , Yannick Brosseau CC: , , , Subject: [PATCH 0/8] iio: stm32-adc: add support of adc for stm32mp13 Date: Wed, 28 Sep 2022 18:41:06 +0200 Message-ID: <20220928164114.48339-1-olivier.moysan@foss.st.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-Originating-IP: [10.75.127.116] X-ClientProxiedBy: GPXDAG2NODE6.st.com (10.75.127.70) To SHFDAG1NODE1.st.com (10.75.129.69) X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.895,Hydra:6.0.528,FMLib:17.11.122.1 definitions=2022-09-28_07,2022-09-28_01,2022-06-22_01 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220928_094229_105962_5201BFFF X-CRM114-Status: GOOD ( 14.99 ) 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 On STM32MP13 SoCs, each ADC peripheral has a single ADC block. These ADC peripherals, ADC1 and ADC2, are fully independent. The STM32MP131 SoC provides only ADC2, while other STM32MP13x SoCs provide both ADC1 and ADC2. The STM32MP13 ADC features and characteristics are slightly different from STM32MP15 ADC ones, requiring a specific support in the driver. This patchset enables the ADC peripheral on STM32MP135F-DK board. On STM32MP135F-DK board the ADC is connected to VDDA voltage provided by the PMIC LOD1 supply, which has to be enabled through SCMI regulator framework. This serie introduces a fixed regulator to allow ADC probing, while SCMI regulators support is not available. This does not ensure ADC regulator enabling however. Olivier Moysan (8): iio: adc: stm32-adc: fix channel sampling time init dt-bindings: iio: adc: stm32-adc: add stm32mp13 compatibles iio: adc: stm32-adc: add stm32mp13 support iio: adc: stm32: manage min sampling time on all internal channels ARM: dts: stm32: add adc support to stm32mp13 ARM: dts: stm32: add adc pins muxing on stm32mp135f-dk ARM: dts: stm32: add dummy vdd_adc regulator on stm32mp135f-dk ARM: dts: stm32: add adc support on stm32mp135f-dk .../bindings/iio/adc/st,stm32-adc.yaml | 68 ++++- arch/arm/boot/dts/stm32mp13-pinctrl.dtsi | 7 + arch/arm/boot/dts/stm32mp131.dtsi | 43 +++ arch/arm/boot/dts/stm32mp133.dtsi | 31 +++ arch/arm/boot/dts/stm32mp135f-dk.dts | 34 +++ drivers/iio/adc/stm32-adc-core.c | 21 ++ drivers/iio/adc/stm32-adc-core.h | 32 +++ drivers/iio/adc/stm32-adc.c | 249 +++++++++++++++--- 8 files changed, 442 insertions(+), 43 deletions(-)