From mboxrd@z Thu Jan 1 00:00:00 1970 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 93104CA5FD2 for ; Thu, 1 Oct 2026 19:13:33 +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:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=VTnvXNahnXSvTxjaA5xNy9fm6F0x3d1GZvSMC1ai1ko=; b=VP8a8vDyC7K9mm4NQxwkmvGQZW zN6TjfQmkiRtpKbhlDZPvMbo0PwruSp80HdUdcDpx69jmzUmqEbct87lbNLMu29m5gSSjJSnIsNmL HWdRCDefHdvSwryph1BB2OSWVJXzIOGF7v3e8VdtgrNYmBa3alO9sS2VkdKBRyxJkqbeR6X1l6Byo IU0V+OpJF83un4UdYZ2QqnEUse5kcabT75v01DecOi/r414ISD/4DYSJ/qi2G/mhrH/qDjQoHVmB4 2BdCVtAFP2Nu14RbpzWc/OmIc1KTZl1kl7ptBtO/zCmgom3OvTciDEIbbJCabZf66OwC3pvL0N8kd iWXZO3JA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1xCMDd-0000000A3yh-1lNi; Thu, 01 Oct 2026 19:13:25 +0000 Received: from mgamail.intel.com ([192.198.163.7]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1xCMDb-0000000A3xz-0wjU for linux-arm-kernel@lists.infradead.org; Thu, 01 Oct 2026 19:13:24 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1790882003; x=1822418003; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=Vr4V/gCzPPo+UnjwMdgsC+wmyLcsr9HE+lOJEU++tgo=; b=DG9IDWUSgJwXM0eYJGBTN++n/IFZV98oTnHbSxEl5DF8c/dLWhaS9Joz O10MdUdUmqpo3qus7QKyM/4u4Zt0CpaxeW7cSYZIi5jG2x6aqRFhPZFam 15wB3l0mpx+VVdS38m49zNNmgLw1cQLl46Vy7dfEjvXHobRpxcYMPDNUf zSaxDbRcjF6kvXKKze9ErDDiHEbU2Ty0NVB2hKKsb+JPJsthsCTC3RBKd 3eowXXpsAuG7Mu8fPaHs+E0fI8nOK9e6Tfpz3wpMiTQibfb8payEJTRk0 sxYfAygbsnNSodUMTV197y7hiHdUtOhxRZeDGTkX/6z+MkUE3Mj604zS1 A==; X-CSE-ConnectionGUID: o6dgqM9xS/qKDL5xBdlT1Q== X-CSE-MsgGUID: 8W3X1q5ATXu0LlBOKy3QQg== X-IronPort-AV: E=McAfee;i="6800,10657,11922"; a="117180997" X-IronPort-AV: E=Sophos;i="6.27,135,1787036400"; d="scan'208";a="117180997" Received: from orviesa005.jf.intel.com ([10.64.159.145]) by fmvoesa101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 01 Oct 2026 12:13:20 -0700 X-CSE-ConnectionGUID: 18tymik5T7qQu8HwzKvanA== X-CSE-MsgGUID: S0AQYo3oQXCtbS4+WZHidA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.27,135,1787036400"; d="scan'208";a="279834236" Received: from abityuts-desk1.ger.corp.intel.com (HELO localhost) ([10.245.244.27]) by orviesa005-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 01 Oct 2026 12:13:17 -0700 Date: Thu, 1 Oct 2026 22:13:14 +0300 From: Andy Shevchenko To: Olivier Moysan Cc: Jonathan Cameron , David Lechner , Nuno =?iso-8859-1?Q?S=E1?= , Andy Shevchenko , Maxime Coquelin , Alexandre Torgue , Philipp Zabel , Sumit Semwal , Christian =?iso-8859-1?Q?K=F6nig?= , linux-kernel@vger.kernel.org, linux-iio@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, linux-media@vger.kernel.org, dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org Subject: Re: [PATCH 2/3] iio: adc: add stm32 mdf support Message-ID: References: <20261001145702.2628429-1-olivier.moysan@foss.st.com> <20261001145702.2628429-3-olivier.moysan@foss.st.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20261001145702.2628429-3-olivier.moysan@foss.st.com> Organization: Intel Finland Oy - BIC 0357606-4 - c/o Alberga Business Park, 6 krs, Bertel Jungin Aukio 5, 02600 Espoo X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20261001_121323_316932_E1962D0A X-CRM114-Status: GOOD ( 11.96 ) 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 Thu, Oct 01, 2026 at 04:56:46PM +0200, Olivier Moysan wrote: > Add the STM32 Multi-function Digital Filter (MDF) core, serial interface > and digital filter drivers. The MDF converts bitstreams from sigma-delta > modulators or digital microphones into samples exposed through IIO. > > Audio: capture PDM microphones via cyclic DMA for an ASoC consumer. > Support CIC scaling and filtering, synchronized and interleaving modes. > Audio use case requires a DMIC filter, and a separate ASoC DAI. > > Analog: expose sigma-delta modulators as IIO voltage channels with > direct reads or DMA buffering mode. STM32 timer triggers can be used as > clock source. > Analog use case requires an IIO backend for the SD modulator. > > Signed-off-by: Olivier Moysan > --- > drivers/iio/adc/Kconfig | 27 + > drivers/iio/adc/Makefile | 3 + > drivers/iio/adc/stm32-mdf-adc.c | 2078 +++++++++++++++++++++++++ > drivers/iio/adc/stm32-mdf-core.c | 857 ++++++++++ > drivers/iio/adc/stm32-mdf-serial.c | 309 ++++ > drivers/iio/adc/stm32-mdf.h | 312 ++++ > include/linux/iio/adc/stm32-mdf-adc.h | 19 + > 7 files changed, 3605 insertions(+) Unreviewable. Make sure the single patch is ~750 lines. -- With Best Regards, Andy Shevchenko