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 05999C021B8 for ; Wed, 26 Feb 2025 07:51:30 +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-Transfer-Encoding: Content-Type:In-Reply-To:From:References:Cc:To:Subject:MIME-Version:Date: Message-ID:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=bq/h+yuqeV1kJnNy4r+K+lk/URKAwBghoS2/5iO3SHI=; b=pj5C4UGspzwzmyxJd4+uFcEe4x AqLnHayZLI3Okffzn/yE571nWe+U7m3JBQh2zH4jKF4lr+wQT19cdK+fAOmjV3RYcFRQL6+RIHlWW jKhaqJpxzdjunso561S4fVQCIYWGsDOU0b+1AJgr81tUKLMttvgHS051naR7qFhRVTJUjIiPc8xBn FuaJ9iIlGzzQmgVfKXAaHnXN5XHRq535Lvh1Yg2+tMfHVjHRz68NXh/ErLU3F70r2u84qjVGgQBBY LaEAOPVfEKIs8J8frROZywA33abcOVkg/6BI4cCjWLr9Mw3biovEZR+ysQJtFYW0CZj+mMM6zgZE4 Tpkq8AEg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tnCCP-00000002kTg-00Ez; Wed, 26 Feb 2025 07:51:21 +0000 Received: from dfw.source.kernel.org ([139.178.84.217]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tnCAr-00000002jsW-1Zzg for linux-arm-kernel@lists.infradead.org; Wed, 26 Feb 2025 07:49:46 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by dfw.source.kernel.org (Postfix) with ESMTP id E2A285C64B0; Wed, 26 Feb 2025 07:49:05 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3A726C4CED6; Wed, 26 Feb 2025 07:49:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1740556184; bh=uCdI2UsWlcFy8fTHJqUUUV32JgbPg3zTDIP1SgS/OEs=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=q9UdPKmChEoDGVsxMpCoa+eWVBARu/cco2J+eMzALEGG++aZ5H/205d2hEmEaI5NZ 1qOO+a/Rjt8mT1PnYPaaZliVlGnN+yqp3xe3kvSJszoKIdQqy8UvLYarHqgYdXXg4u +MFcuZP3ZGHvtVUhnstYEHnjIfkv8wK7pGz23KIfMMVER0mQCt8Anu4ZDe7+0uPTUQ sKQTOMkSnJDzQh8pSSHbLIaXNPtT3Gf189JgLZG7sfz5SNBKEYgidP8eJsJtBCWf1k QSP7+yiLEse5Od4PAA5x923hSNHRBzomuzMGO1mbLb0n28O2sUBCSLB/+k1H5I0iuV BHoKqVapGyGtQ== Message-ID: Date: Wed, 26 Feb 2025 08:49:37 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 6/8] counter: stm32-lptimer-cnt: add support for stm32mp25 To: Fabrice Gasnier Cc: lee@kernel.org, ukleinek@kernel.org, alexandre.torgue@foss.st.com, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, wbg@kernel.org, jic23@kernel.org, daniel.lezcano@linaro.org, tglx@linutronix.de, catalin.marinas@arm.com, will@kernel.org, devicetree@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-iio@vger.kernel.org, linux-pwm@vger.kernel.org, olivier.moysan@foss.st.com References: <20250224180150.3689638-1-fabrice.gasnier@foss.st.com> <20250224180150.3689638-7-fabrice.gasnier@foss.st.com> <20250225-pelican-of-pleasurable-might-e9a7e8@krzk-bin> <4ffc3fe3-78ab-43b2-b0d5-8f9cb545f9c5@foss.st.com> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250225_234945_528878_D94D79F0 X-CRM114-Status: GOOD ( 17.21 ) 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 25/02/2025 15:58, Fabrice Gasnier wrote: > On 2/25/25 13:02, Krzysztof Kozlowski wrote: >> On Mon, Feb 24, 2025 at 07:01:48PM +0100, Fabrice Gasnier wrote: >>> Add support for STM32MP25 SoC. Use newly introduced compatible to handle >>> this new HW variant, even if no major change is expected on the counter >>> driver. >>> >>> Signed-off-by: Fabrice Gasnier >>> --- >>> drivers/counter/stm32-lptimer-cnt.c | 1 + >>> 1 file changed, 1 insertion(+) >>> >>> diff --git a/drivers/counter/stm32-lptimer-cnt.c b/drivers/counter/stm32-lptimer-cnt.c >>> index b249c8647639..a5dce017c37b 100644 >>> --- a/drivers/counter/stm32-lptimer-cnt.c >>> +++ b/drivers/counter/stm32-lptimer-cnt.c >>> @@ -508,6 +508,7 @@ static SIMPLE_DEV_PM_OPS(stm32_lptim_cnt_pm_ops, stm32_lptim_cnt_suspend, >>> >>> static const struct of_device_id stm32_lptim_cnt_of_match[] = { >>> { .compatible = "st,stm32-lptimer-counter", }, >>> + { .compatible = "st,stm32mp25-lptimer-counter", }, >> >> So fully compatible? Why this change then? > > Hi Krzysztof, > > I should have mentioned it in the commit message: > > Currently, same feature list as on STM32MP1x is supported. > New capture input stage is now available in the hardware. It's not added > yet to the driver. Which is the exact meaning of compatible. Express it properly in bindings and driver. > > The Low Power Timer (LPTIM) hardware isn't fully backward compatible, How so? How can it work then with above ID table? Best regards, Krzysztof