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 A3E4B159596; Mon, 6 Jan 2025 06:12:36 +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=1736143956; cv=none; b=M5IsxjY4tKlvemqSI+2jWD+UTN3Wm5zMIi8u85epSPk3n/SnrQAaG9Em38kJMajeQUt6sr7ELA8mqyhyayMAhjFTV8gnQpUBEyWT5XypTV35dLIFCOgcJtmsFC/KREdz7QxWas0n7ic5qLsU3Iq5Nt0AkBhmJ+KUFJA7rc2odhw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1736143956; c=relaxed/simple; bh=jp5C9gdHsVMKS8jVTp+3NZItTKeeryMDnozp0PeUoc0=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=tPxQXuWB5gkW3wtgEzlT3SW5j/1kNsLhD8IY7nQ4j+eCbwv37wIo8AoVd+OShwlQzzbhXBAwFlqDhU3VRGIXiTeCTmBwd0L0R6a8R94r04/qacCkdwn/DfONJyUfug0/Ky6jZOcq/wh6nAN2udE3e6ydQzTlzDeeIQo9q7xibVw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=UmbuCXzV; 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="UmbuCXzV" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 90D9FC4CED2; Mon, 6 Jan 2025 06:12:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1736143956; bh=jp5C9gdHsVMKS8jVTp+3NZItTKeeryMDnozp0PeUoc0=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=UmbuCXzVw8NGwcnPA/qqF7oNuu+67cBQtj2xuZUU7NEeUkXspWEOpLan3jFzeBHDX AIBisDlNkxW1w+1TqEKxoGxwya2MsVw7TL783P5jW4Gz+z6tF/zOSz/V70Eskx2ewY qsPAU/JOnUQ0XoVrMS0h+YY4kegnQziG/YxHjPeUJzoqw1REMZnNpA8B2dQSZgb5DB nlzyiSed8QgjsdsUlKzJuh67Ef3+DLdXP6zlAEpsPsZBWMBHwuYDIVYK5xENLDh4vB GNMDDRr8TG6kRn6AKzJzs2/nIXdlCl4zULO6VErBu9uNYvJC3rIPzZL8LCvit1O/W7 Hhmwer5KvBJ4w== Message-ID: <8d2746ba-47d2-429b-9df0-9448a4516ef1@kernel.org> Date: Mon, 6 Jan 2025 07:12:29 +0100 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 1/2] dt-bindings: arm: fsl: Update i.MX95 compatible To: Peng Fan , "Peng Fan (OSS)" , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam Cc: "devicetree@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "imx@lists.linux.dev" , "linux-arm-kernel@lists.infradead.org" References: <20250104-imx9-machine-v1-0-18a78e41456b@nxp.com> <20250104-imx9-machine-v1-1-18a78e41456b@nxp.com> <4666f8e9-d19e-45bd-be9c-a7f111168d66@kernel.org> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 06/01/2025 03:51, Peng Fan wrote: >> Subject: Re: [PATCH 1/2] dt-bindings: arm: fsl: Update i.MX95 >> compatible >> >> On 04/01/2025 13:13, Peng Fan (OSS) wrote: >>> From: Peng Fan >>> >>> i.MX95 features a System Controller and SCMI Spec 3.2 compatible >>> firmware System Manager(SM) runs on the controller. >>> Add "fsl,imx-sm" compatible string as fallback for "fsl,imx95" to >>> indicate it is compatible with i.MX System Manager. >> >> I see little value in generic compatible like that. All these are >> aarch64 so why not adding that compatible? >> >> How this generic compatible would be used? >> >> And by what exactly? > > There will be more i.MX9 chips with System Manager. I would > not expand the list here each time to support a new SoC. > > https://elixir.bootlin.com/linux/v6.13-rc3/source/drivers/pinctrl/pinctrl-scmi.c#L508 > https://elixir.bootlin.com/linux/v6.13-rc3/source/drivers/pinctrl/freescale/pinctrl-imx-scmi.c#L290 Problem is that compatible is way too generic to be used by Linux drivers. Best regards, Krzysztof