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 DDD56C83F10 for ; Tue, 15 Jul 2025 03:23:00 +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:In-Reply-To: Content-Transfer-Encoding:Content-Type:MIME-Version:References:Message-ID: Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=d02gF3oCZFGp0ZEhv/K8CGphsXYZbbGYTBXQm+GFtuE=; b=YBRGC2O3PlZgQmTQOZYOp2nOW/ 4FO5Juahg1/MSLLaxRxjqezUKDdddmlmBMqpMafHhxjR3YJGwF9s27wFtkSTQz6uq/ygQbmzQS/Xg NlHaT6AZwUywjotol/pMW/pB3cJqelHxgvo6a3uaxcrwX56rfL0igal6s101KsckL/XGIaHRi8DQB NO038odYcwOlOTB3ZlRP4fUwq3tsnEfv3DofpXvMY/OcsO/3GmMY5lynEcGy1EiGs7l4/hzzfGC2I rK3DYls/zRKa+Ph4sW+t7eVKfWGM7JrN7jKjfDi9lK8vUiGclQyXG5YQdV7/BL3mh9RcshBoIE3id KCs3XJ1A==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1ubWFp-00000003ryb-0i73; Tue, 15 Jul 2025 03:22:53 +0000 Received: from sea.source.kernel.org ([2600:3c0a:e001:78e:0:1991:8:25]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1ubWDO-00000003rfq-05GF for linux-arm-kernel@lists.infradead.org; Tue, 15 Jul 2025 03:20:23 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id 657BD45E81; Tue, 15 Jul 2025 03:20:21 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1D5B9C4CEED; Tue, 15 Jul 2025 03:20:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1752549621; bh=TDYuRWmFZrwnvk8qMS3AlGvkZ3xUWYu930vi3adDEoY=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=mhnvEVxTxd7nbP4JvA3c5oAI7v4Uh1XECXIYdE/N/qy0huEeZvo77oD3clb4yTeWg ymcvNK/OWxZiNy8QB28n853qDQu5Onfy2QbNM99FmG7C495d6/1pBwDdOtioibMSSr /rlMD2bWz/hqVqcD18knvPH4J8lLajX/kcQ2Ilm7eWdWbm7ZGc4Q/ZTnOWmINuwNNe BxX9zMQoXhN+gpCMRRtNwTSi0RuN0t+Gkpq8fEib5xKs3IOxjBmVBIpaSmzbYDP8qg xOWvSr5FiKi9K5beUealNgIeVFiD9nCqjoctx0r+oRvwk+1p8VUoHmrFlNxs9LXyT7 106sWikoj8ffw== Date: Mon, 14 Jul 2025 22:20:20 -0500 From: Rob Herring To: =?iso-8859-1?Q?Cl=E9ment?= Le Goffic Cc: Will Deacon , Mark Rutland , Krzysztof Kozlowski , Conor Dooley , Maxime Coquelin , Alexandre Torgue , Philipp Zabel , Jonathan Corbet , Gatien Chevallier , Michael Turquette , Stephen Boyd , Gabriel Fernandez , Krzysztof Kozlowski , Le Goffic , linux-arm-kernel@lists.infradead.org, linux-perf-users@vger.kernel.org, devicetree@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, linux-clk@vger.kernel.org Subject: Re: [PATCH v2 06/16] arm64: dts: st: add LPDDR channel to stm32mp257f-dk board Message-ID: <20250715032020.GB4144523-robh@kernel.org> References: <20250711-ddrperfm-upstream-v2-0-cdece720348f@foss.st.com> <20250711-ddrperfm-upstream-v2-6-cdece720348f@foss.st.com> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20250711-ddrperfm-upstream-v2-6-cdece720348f@foss.st.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250714_202022_081197_2225E35E X-CRM114-Status: GOOD ( 16.04 ) 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 Fri, Jul 11, 2025 at 04:48:58PM +0200, Clément Le Goffic wrote: > Add 32bits LPDDR4 channel to the stm32mp257f-dk board. > > Signed-off-by: Clément Le Goffic > --- > arch/arm64/boot/dts/st/stm32mp257f-dk.dts | 7 +++++++ > 1 file changed, 7 insertions(+) > > diff --git a/arch/arm64/boot/dts/st/stm32mp257f-dk.dts b/arch/arm64/boot/dts/st/stm32mp257f-dk.dts > index a278a1e3ce03..a97b41f14ecc 100644 > --- a/arch/arm64/boot/dts/st/stm32mp257f-dk.dts > +++ b/arch/arm64/boot/dts/st/stm32mp257f-dk.dts > @@ -54,6 +54,13 @@ led-blue { > }; > }; > > + lpddr_channel: lpddr4-channel { > + #address-cells = <1>; > + #size-cells = <0>; > + compatible = "jedec,lpddr4-channel"; Not tested because this doesn't match the binding. > + io-width = <32>; > + }; What would multiple channels look like? I think this needs some work. Like it should perhaps be within the memory node. It's a lot to just say 32-bit LPDDR4 x1. > + > memory@80000000 { > device_type = "memory"; > reg = <0x0 0x80000000 0x1 0x0>; > > -- > 2.43.0 >