From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx07-00178001.pphosted.com (mx08-00178001.pphosted.com [91.207.212.93]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A485C15383D; Tue, 25 Feb 2025 16:22:55 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=91.207.212.93 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1740500578; cv=none; b=He9hhX5A890/1G4yqCAbi/QyeHgUEQ1wNt8Z1OR4K4yi3B7o0H/Tf0klA1BJph1jcxP2AUkp3sEvdy36ykdmDOKgJlgMyD8YmhI1EPnoPSYtGylT4BwEhTgsv/jprW259g8Igk415UOdGVDG8U3MPN8Ap/+uyuGttDNl8Bb28bA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1740500578; c=relaxed/simple; bh=4UZQt6CS0MHkBs/i4rSdDNtr9IYHVh5vB9xkgBgwouI=; h=Message-ID:Date:MIME-Version:Subject:To:CC:References:From: In-Reply-To:Content-Type; b=GtBufvbm0yglYhDRS0QJsF+gyM0tl/3hXUEU3BW0HY4hewtmubPZ8ueV5C/zo+GmBCE/zzBDAgiofYpkd2Q0Nur2kKJtHUNvRUj1/A9R8Wsoj6yql7uVshuYt3zdTBNs3kF9skon0FK1F9nuk7q3MjBN5P8Tp1TJQEHYYWVDsiA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=foss.st.com; spf=pass smtp.mailfrom=foss.st.com; dkim=pass (2048-bit key) header.d=foss.st.com header.i=@foss.st.com header.b=t076cPPW; arc=none smtp.client-ip=91.207.212.93 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=foss.st.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=foss.st.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=foss.st.com header.i=@foss.st.com header.b="t076cPPW" Received: from pps.filterd (m0046660.ppops.net [127.0.0.1]) by mx07-00178001.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 51PF4maO002601; Tue, 25 Feb 2025 17:22:30 +0100 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= Xhh3gcbiFK/6Ez/lxF9CuTHjea+5VkiT+cvC5t9kB1c=; b=t076cPPWkl37c0C9 0Sf4NkVTYac4WOW0OzH5SB/N9VcaPdVH06HEtXlDggksW8DgtAexmUqShnUXuSjH 2i0Wt9AcuBY0vU+thJKq5Kpe9laqG2GfAjpKTNoUdXfbmpSfUh2QrcWeAmslaE0Z TfDOXE2vQQzVSAew0yRWO9WZsrKH20AlSyeeGy/jEKixUNn1LtGujjMC3xLUaKPO d8puCY+ckneEhuWWdeovePidHjiMJMEViaM254XZ2mhfQCOjt3BFahXO0EJFDd4r 3yU2QvhnR83nRbxGDufnMs6JhcvefOepMo2QpyK7CPAaYz+cSPwdizVcZeACqTMS WVhbuA== 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 4512spmfjf-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 25 Feb 2025 17:22:30 +0100 (CET) Received: from euls16034.sgp.st.com (euls16034.sgp.st.com [10.75.44.20]) by beta.dmz-ap.st.com (STMicroelectronics) with ESMTP id F2403400A0; Tue, 25 Feb 2025 17:21:09 +0100 (CET) Received: from Webmail-eu.st.com (eqndag1node4.st.com [10.75.129.133]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id D10F54DD22B; Tue, 25 Feb 2025 15:57:05 +0100 (CET) Received: from SAFDAG1NODE1.st.com (10.75.90.17) by EQNDAG1NODE4.st.com (10.75.129.133) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.39; Tue, 25 Feb 2025 15:57:05 +0100 Received: from [10.48.86.222] (10.48.86.222) by SAFDAG1NODE1.st.com (10.75.90.17) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.39; Tue, 25 Feb 2025 15:57:04 +0100 Message-ID: Date: Tue, 25 Feb 2025 15:57:04 +0100 Precedence: bulk X-Mailing-List: linux-iio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 1/8] dt-bindings: mfd: stm32-lptimer: add support for stm32mp25 To: Krzysztof Kozlowski CC: , , , , , , , , , , , , , , , , , , References: <20250224180150.3689638-1-fabrice.gasnier@foss.st.com> <20250224180150.3689638-2-fabrice.gasnier@foss.st.com> <20250225-outgoing-scorpion-of-music-be0bea@krzk-bin> Content-Language: en-US From: Fabrice Gasnier In-Reply-To: <20250225-outgoing-scorpion-of-music-be0bea@krzk-bin> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-ClientProxiedBy: EQNCAS1NODE3.st.com (10.75.129.80) To SAFDAG1NODE1.st.com (10.75.90.17) X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1057,Hydra:6.0.680,FMLib:17.12.68.34 definitions=2025-02-25_05,2025-02-25_03,2024-11-22_01 On 2/25/25 13:02, Krzysztof Kozlowski wrote: > On Mon, Feb 24, 2025 at 07:01:43PM +0100, Fabrice Gasnier wrote: >> pwm: >> type: object >> additionalProperties: false >> >> properties: >> compatible: >> - const: st,stm32-pwm-lp >> + enum: >> + - st,stm32-pwm-lp >> + - st,stm32mp25-pwm-lp >> >> "#pwm-cells": >> const: 3 >> @@ -69,7 +76,9 @@ properties: >> >> properties: >> compatible: >> - const: st,stm32-lptimer-counter >> + enum: >> + - st,stm32-lptimer-counter >> + - st,stm32mp25-lptimer-counter > > Driver changes suggest many of these are compatible. Why isn't this expressed? Hi Krzysztof, The Low Power Timer (LPTIM) hardware isn't fully backward compatible. At driver level, as indicated in the cover-letter, same feature list as on STM32MP1x is supported currently. This is probably what makes it look like it's compatible, but it's not fully compatible. The hardware controller is a bit different. Some registers/bits has been revisited among other things. This is the purpose for these new compatibles. Please find driver-related answers each driver part. Best regards, Fabrice > > Best regards, > Krzysztof >