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 BD0E5C79FBD for ; Wed, 9 Sep 2026 15:47:48 +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=0WTg0hinwZVk1gOFLESphg1juIvCliYo6fyoSEpfyuI=; b=DMy2LCx3SWydcSrCMfblbiMa0R aUyJr0E/vYbXl1IlO2CHdoSYCliEhquUkswy7vnOYdDZgXEJ0rsZ2MsC5/ctgVir5uBARkPXTxp8i Q5lQjQxzmXk9Ol3AwjQtymF+lSCViruVj7SlPzPXBjl1pMYupncezaKKf5TpPoOXrWEyHfvmTXNaQ Z1zj54WQ8huvJM19WWG7PozrOilN2QsGNhSoXdBMa2FvXuvoki2vbgBDOo0EuzAyJhL1o5lu8ZdmL xGseUsnS90KR2eKeKaWNoEVBlSl3BQoE6PBM75zjFBOhbEX6B2B/ejvZPIDUO0lguZoEijKjC69kS hHthXwiQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1x4KWU-0000000CDuD-18BX; Wed, 09 Sep 2026 15:47:42 +0000 Received: from tor.source.kernel.org ([2600:3c04:e001:324:0:1991:8:25]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1x4KWR-0000000CDrx-0WQN; Wed, 09 Sep 2026 15:47:39 +0000 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by tor.source.kernel.org (Postfix) with ESMTP id 67536600CB; Wed, 9 Sep 2026 15:47:38 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id A9C251F00A3A; Wed, 9 Sep 2026 15:47:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1788968858; bh=0WTg0hinwZVk1gOFLESphg1juIvCliYo6fyoSEpfyuI=; h=Date:Subject:To:Cc:References:From:In-Reply-To; b=gQMM0N6SVREVmfL81UA1WPeTHukV/yoX9yWLhpxh7qmoQ0o1CiLhtFUEyslPB3dr3 Om9y3SvgaJXlj/zWNNS3kW3Jw3Nqsv4fPdjz2u3cfWJGHacbeMqOkYKwVG48JlgZIo ukHyIO5jFCa2/eWRmElAG7pdpA1c6Rk+vs7PIEQdPsGzP+F0kjPOxZqmaYBSE7+uvh s2jPDZz+e8ASdN2o7e0s9h5tZ+w7S4AyAEkbAdoV2OCyNHSaqhRTeXxXzG260XBjzP WMYAhzyed9QLgT3IAuVw5qhvyF7pRSp6j9eIVjPBzUn2iL892RQ4xH2vNrQP4rd2BA YrGORphDRc2KA== Message-ID: <43492561-1f38-442f-aaa8-1f4854261818@kernel.org> Date: Wed, 9 Sep 2026 17:47:31 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 3/3] arm64: dts: broadcom: Add RTC to Raspberry Pi 5 B To: Sander Speetjens , Alexandre Belloni Cc: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Florian Fainelli , Jonathan Bell , Stefan Wahren , linux-rtc@vger.kernel.org, devicetree@vger.kernel.org, linux-rpi-kernel@lists.infradead.org, linux-arm-kernel@lists.infradead.org References: <20260909141300.1368790-1-sander.speetjens@gmail.com> <20260909141300.1368790-4-sander.speetjens@gmail.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-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 09/09/2026 16:13, Sander Speetjens wrote: > The Raspberry Pi 5 contains a RTC on a custom DA9091 PMIC that is accesed trought the firware mailbox. > This so we have a battery backed RTC, so the OS does not need network to get the time. > > Signed-off-by: Sander Speetjens > --- > arch/arm64/boot/dts/broadcom/bcm2712-rpi-5-b-base.dtsi | 7 +++++++ > 1 file changed, 7 insertions(+) > > diff --git a/arch/arm64/boot/dts/broadcom/bcm2712-rpi-5-b-base.dtsi b/arch/arm64/boot/dts/broadcom/bcm2712-rpi-5-b-base.dtsi > index b7a6bc34ae1a..5a82dd585f32 100644 > --- a/arch/arm64/boot/dts/broadcom/bcm2712-rpi-5-b-base.dtsi > +++ b/arch/arm64/boot/dts/broadcom/bcm2712-rpi-5-b-base.dtsi > @@ -102,6 +102,13 @@ wl_on_reg: wl-on-reg { > startup-delay-us = <150000>; > enable-active-high; > }; > + > + rpi_rtc: rpi-rtc { Node names should be generic. See also an explanation and list of examples (not exhaustive) in DT specification: https://devicetree-specification.readthedocs.io/en/latest/chapter2-devicetree-basics.html#generic-names-recommendation If you cannot find a name matching your device, please check in kernel sources for similar cases or you can grow the spec (via pull request to DT spec repo). > + compatible = "raspberrypi,rpi-rtc"; > + firmware = <&firmware>; > + status = "okay"; Why? Best regards, Krzysztof