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 287A0CCD185 for ; Mon, 13 Oct 2025 19:55:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To: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=vvHtz6eIJAuTK2GbT2XLUds8MeD3Qgg5v4O41rwnSTg=; b=aZbmPH08zWylz7 a0gyRfFdYZOOOKkh3+t0EDEyJzmLJsDsNjakMD+zqCXLJhcEQKH09kaHizPyMHtbg6psse9pmaFPU 55u3ub5mT/oMRUYNuVMceGNHKRpRylfZn1+N/E91Ju0C1E7pMRgB8htiYPd5cgoRUqRvanvbUCRAq DET6ca+4G61sdEDnauhiou9RbnGSleWTBkDR4+ySJLMUHnnODltGPfWRpOenM04XeImyUhdoL/J2P pQoVYNyd7tonNUApd/HLTyKMu9BzkG3+D+CXyPDZxSvrmu3vyBl2qJqioLiH+bNzUUFIU7XwYYWC7 wpi3jX0j4Xe26u5AaPLQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1v8OdX-0000000EKIm-3cet; Mon, 13 Oct 2025 19:55:15 +0000 Received: from smtpout-04.galae.net ([185.171.202.116]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1v8OdT-0000000EKIM-3zkn for linux-i3c@lists.infradead.org; Mon, 13 Oct 2025 19:55:14 +0000 Received: from smtpout-01.galae.net (smtpout-01.galae.net [212.83.139.233]) by smtpout-04.galae.net (Postfix) with ESMTPS id 60C4FC093B5; Mon, 13 Oct 2025 19:54:47 +0000 (UTC) Received: from mail.galae.net (mail.galae.net [212.83.136.155]) by smtpout-01.galae.net (Postfix) with ESMTPS id 45DA66067B; Mon, 13 Oct 2025 19:55:06 +0000 (UTC) Received: from [127.0.0.1] (localhost [127.0.0.1]) by localhost (Mailerdaemon) with ESMTPSA id 10BD9102F227A; Mon, 13 Oct 2025 21:54:55 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=dkim; t=1760385305; h=from:subject:date:message-id:to:cc:mime-version:content-type: in-reply-to:references; bh=ueA4Mw4ZvAdPduByR8LCFz7NV7MIajA8VN4BjDi+iYc=; b=tSMPaCM3u/5AMWi6C2uaGeO7nteYc8EWKCbf8Atx+55xMokblB8D7uyqQUIN5UN0VCyf8M 92rSu2RHAMygLwiTzDHbfNr6o39la14ofppeSKWml+FP2LeSBi+tMVaA9t21CfewwODbPY O2iuzUWMZ9m3sdCASDH/6F85ruQDAszHZA2BlFfDdR01oDoTOGJcZVTzMKsl+PR7xrtB/u kCvU5b6eyw7dGzYrzu/ZYfz+585J2Rmp3YyycCPmvrqpkvXzI4JJICjnHtrTPDlVVxjYUD 8Lnbu5vdBtJDAqrcnk19G+o0IESLUGkvny+JXMAEGdeZnfZ8WdPwOeSuFhLf8w== Date: Mon, 13 Oct 2025 21:54:55 +0200 From: Alexandre Belloni To: Jonathan Cameron Cc: Frank Li , Miquel Raynal , David Lechner , Nuno =?iso-8859-1?Q?S=E1?= , Andy Shevchenko , Rob Herring , Krzysztof Kozlowski , Conor Dooley , linux-i3c@lists.infradead.org, linux-kernel@vger.kernel.org, imx@lists.linux.dev, linux-iio@vger.kernel.org, joshua.yeong@starfivetech.com, devicetree@vger.kernel.org, Carlos Song , Adrian Fluturel Subject: Re: [PATCH v5 0/5] i3c: Add basic HDR mode support Message-ID: <2025101319545551cfb399@mail.local> References: <20251007-i3c_ddr-v5-0-444184f7725e@nxp.com> <20251012180327.5d94dda2@jic23-huawei> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20251012180327.5d94dda2@jic23-huawei> X-Last-TLS-Session-Version: TLSv1.3 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20251013_125512_530486_2131C503 X-CRM114-Status: GOOD ( 15.42 ) X-BeenThere: linux-i3c@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-i3c" Errors-To: linux-i3c-bounces+linux-i3c=archiver.kernel.org@lists.infradead.org On 12/10/2025 18:03:27+0100, Jonathan Cameron wrote: > On Tue, 07 Oct 2025 16:06:12 -0400 > Frank Li wrote: > > > Add basic HDR mode support, only support private transfer, not support > > CCC command. > > > > Update i3c framework API to allow pass down mode and extend driver callback > > function. > > > > Implement HDR transfer in svc i3c master driver. > > > > Simplifed HDR flow is (ref i3c spec line 5514) Figure 129 > > > > <-- SDR ---> | <--- HDR > > START 0x7E RnW(0) ACK CCC(ENTHDR0) T HDR-CMD(00-7f write, 80--ff read) > > > > ----> | > > HDR-DATA HDR-CRC HDR-RESTART .... HDR-EXIT > > > > Note: HDR-CMD is 16bit data, which included 7bit slave address and 8bit > > read/write command. > > > > svc hardware can auto issue SDR part. > > > > Signed-off-by: Frank Li > > Whilst there will probably have to be a v6 for the ACPI ID issue in patch 5, > I'd like to ask the question of how are we planning to merge this? > > Maybe an immutable branch either in IIO or I3C trees that the other one picks up? > > It's a new driver so could gamble on taking the IIO driver the I3C tree but even > then I'd like a topic / immutable branch in case any IIO wide refactors or similar > hit this cycle. > I can definitively provide an immutable branch once this goes in or if you are more comfortable with this, I guess there is no urgency and we could apply this over two cycles, first the I3C part and then you can take the driver. -- Alexandre Belloni, co-owner and COO, Bootlin Embedded Linux and Kernel engineering https://bootlin.com -- linux-i3c mailing list linux-i3c@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-i3c