From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 2060A26F443; Wed, 26 Feb 2025 07:49:44 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1740556186; cv=none; b=WRu5UmFURzbxKBOmLyMVVB3wgbB7z64GFuc9unNaQhVnnrIEE/JCc3hVsWieEhEePvOVSE7+NChmOROXF6dzMu23/oXujD4wCdaaN/9u8nf08kMIPHQrXUwSjo8btxznANN9C2jQ5uFEp50dggZ3Yj3jC004/PzUnTDMFK6P/rY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1740556186; c=relaxed/simple; bh=uCdI2UsWlcFy8fTHJqUUUV32JgbPg3zTDIP1SgS/OEs=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=mKNPEc+A5PEhRDAXc3raS/BCrjGeS2Kxyci+ivmw3IR34jMdj3Z0TrpidiEGIuQrUo6XKszUMQeDoV5h/Uzhwz4qc0LBFjdYroFpvcedsZ6lj5af7n1sQutYjCKmTG2gVXjiyOI08s5saiXHaauRiAjgCPQv8ig3+oBTFzQO92E= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=q9UdPKmC; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="q9UdPKmC" 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 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 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 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