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 4F9631367; Wed, 28 May 2025 07:43:52 +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=1748418233; cv=none; b=JwsAS3A3i0x7rr5zRFBHrrH57/kESQc4MB3QBvzjcYmwbiIX83W9NYNML+2YcvPch0Ro8yEI6k/09cH8yFLA/qfupQrC6L66e1+aGT5F2HusVUGIzWwkZs+btqtyKTlDUyGQ3x3DO7IUmFMl2swZFcNG3VwzQzal2445KhcqaAc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1748418233; c=relaxed/simple; bh=UDTXmWoYv9/xyJqEAsScTL5vAx1ZZeaAczWfwT05les=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=bvB20nsGBgw9FPMkqrGFa+HgzTCoGVFXHHdD+YulkHP9XisN1BSVEj8kH90IKCCrjk22G3ABMi+BlZXTmX+pYKzINUAlGVKwvdc6mCLs3vs6LqtkaiZ0QsbW7Az9wlpBr4Fu6z2mxq4QmYoHWLLp9NOoWKMQu0ct++WfmV/1lLI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=jXtHtHR8; 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="jXtHtHR8" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5A39CC4CEE7; Wed, 28 May 2025 07:43:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1748418232; bh=UDTXmWoYv9/xyJqEAsScTL5vAx1ZZeaAczWfwT05les=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=jXtHtHR8IRSjqMfFlBbzEm/QcuoeHsg2WKHcAHv301klgRgl0C+q85BHx7sVM35uM StgVp4Bh87ZwxrbJpRJx6YP8JpwLiviEW2Rw3BJZo35X7pjAYeE2TYWgk9ytUovO2x iEgCsFEyR5eM/koJYtXhoc/khCR4pGbL4M5L2KPs0M+b/N7HIgc79epnpTd2dje/qo JH6G0ENMXeSWvM3YeEZSEtV3RqL0cvNbHnur+yovMhzPaEbra6MyEnZ9RAdcY1PNPj hE+krx+7lqGKkLmcdgfC7El1BPRnVanW9I3CLKzryptPIKo9DABwoSJjRaCSJwVUoL HVzSwvfll6MNw== Message-ID: Date: Wed, 28 May 2025 09:43:48 +0200 Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] dt-bindings: timer: xlnx,xps-timer: Make PWM in example usable To: =?UTF-8?Q?Uwe_Kleine-K=C3=B6nig?= , Daniel Lezcano , Thomas Gleixner , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Sean Anderson Cc: linux-kernel@vger.kernel.org, linux-pwm@vger.kernel.org, devicetree@vger.kernel.org References: <20250527171504.346696-2-u.kleine-koenig@baylibre.com> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 8bit On 27/05/2025 19:15, Uwe Kleine-König wrote: > With #pwm-cells = <0> no usable reference to that PWM can be created. > Even though a xlnx,xps-timer device only provides a single PWM line, Linux > would fail to determine the right (pwmchip, pwmnumber) combination. > > Fix the example to use the recommended value 3 for #pwm-cells. > > Signed-off-by: Uwe Kleine-König > --- > Documentation/devicetree/bindings/timer/xlnx,xps-timer.yaml | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > And what about the binding itself? It allows any arbitrary value. Setting it to const=3 would not break the ABI, as long as driver does not care. Best regards, Krzysztof