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Received: from nyc.source.kernel.org ([147.75.193.91]) by desiato.infradead.org with esmtps (Exim 4.98.1 #2 (Red Hat Linux)) id 1uCwq0-0000000G002-3ZPI for linux-arm-kernel@lists.infradead.org; Thu, 08 May 2025 08:42:45 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by nyc.source.kernel.org (Postfix) with ESMTP id E66C1A4DAA8; Thu, 8 May 2025 08:42:36 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 34804C4CEE7; Thu, 8 May 2025 08:42:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1746693756; bh=P+E3NNjEk7mDbGoMuwRiIBIXW3l8dZzpasnSJi954yg=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=kuHeH5Sh0nD/r5HLG1hp0CiM+1Lkc8z/qqMF7RHFI1PvGn7dqtl02dWR5TrLzp0Hd 0FAylV8OyW3MUkwcHoh9GwHW1O8McNcCPcvFH05f92I2Z9raYujhNamPWQJd65bzOH jjVrrrmfvdlY7zd/vo3YGBUdwuAbuTXkOPl2ALa1FmVtiNv98s1Jyhs81zXSF9uXpv K/Me1kgLQkHTKE9plJUffAXkMn3rZT35mvJ8YZm66e6WRIzlAhiPNBcuoKvpoLk6l8 rHzK68KceHudJBa9sbajJRAlVewddYawfKbX/6+Dm7/cJRpAXagCK5ytjwgOB0v1zj 4+L0XevzkRXmg== Message-ID: Date: Thu, 8 May 2025 10:42:33 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 4/8] dt-bindings: Add Tegra264 clock and reset definitions To: Thierry Reding Cc: Jon Hunter , linux-tegra@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org References: <20250507143802.1230919-1-thierry.reding@gmail.com> <20250507143802.1230919-5-thierry.reding@gmail.com> <1ec7ed24-a4fe-450b-8f99-34aae6ed2c4d@kernel.org> <3gpirue4rr5hpgynzzadzlr6i2fvdhaugcutyqyfoeix2zf3fu@xpbdadb5nynu> 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-20250508_094241_351838_BD3E916F X-CRM114-Status: GOOD ( 19.08 ) 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 08/05/2025 09:53, Thierry Reding wrote: > On Thu, May 08, 2025 at 09:40:02AM +0200, Krzysztof Kozlowski wrote: >> On 07/05/2025 16:37, Thierry Reding wrote: >>> @@ -0,0 +1,9 @@ >>> +/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */ >>> +/* Copyright (c) 2022-2023, NVIDIA CORPORATION. All rights reserved. */ >>> + >>> +#ifndef DT_BINDINGS_CLOCK_TEGRA264_CLOCK_H >>> +#define DT_BINDINGS_CLOCK_TEGRA264_CLOCK_H >>> + >>> +#define TEGRA264_CLK_CLK_S 2U >> >> Abstract IDs start from 0 or 1, not 2. Also drop "U". > > These are not abstract IDs, they are defined by the BPMP ABI. We cannot > change them, otherwise it'll completely break. You mean from the firmware? Sure. You have entire commit msg to explain all unusual things here... > > For similar reasons I'd like to keep the "U". These definitions are for > the most part directly imported from the BPMP ABI headers, though we do > try to be selective about what we add, to avoid adding hundreds of new > lines in one go, and several safety-checking tools run on these headers > that happen to require the "U" suffix to make sure these have a defined > type. > >>> + >>> +#endif /* DT_BINDINGS_CLOCK_TEGRA264_CLOCK_H */ >>> diff --git a/include/dt-bindings/reset/tegra264-reset.h b/include/dt-bindings/reset/tegra264-reset.h >>> new file mode 100644 >>> index 000000000000..31d89dcf62fa >>> --- /dev/null >>> +++ b/include/dt-bindings/reset/tegra264-reset.h >>> @@ -0,0 +1,7 @@ >>> +/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */ >>> +/* Copyright (c) 2022-2023, NVIDIA CORPORATION. All rights reserved. */ >>> + >>> +#ifndef DT_BINDINGS_RESET_TEGRA264_RESET_H >>> +#define DT_BINDINGS_RESET_TEGRA264_RESET_H >>> + >> This is empty, drop. > > We have three people currently working on additional drivers for this > SoC and they all need to add to these two files. Adding the empty file > here makes it a bit easier to coordinate things, making the resulting > conflicts trivial to resolve. Bindings are supposed to be complete (see writing bindings doc), this means also bindings headers. If the constants come from firmware, they are defined so I really do not understands why they cannot be published now. Unless you mean that this is a new SoC and the firmware is not yet fixed/finished, but all this must be explained in the commit msg. Best regards, Krzysztof