From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 D5739306764; Thu, 2 Jul 2026 22:18:58 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783030739; cv=none; b=H/6OW5Wzn9iLjdFvL3cjHcAEDMzaaMpri+lJGNwP/jH+4J+/r0MRt9PzuayqvSyZ5ZHS+ooP3cSUtJD05rS4sttJhGPoHR5Vr68Ib4H4GwTevJZ1JG+AcVDIobLwMVuFhflSLQL3RgYEjiqS0hnu0exVhJntkPoYOAL2+0PtGG0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783030739; c=relaxed/simple; bh=uIK2wXZt6lpexw1RHubScXDuScpKzH+Rgz4MJDFq5qU=; h=From:To:Cc:Subject:In-Reply-To:References:Date:Message-ID: MIME-Version:Content-Type; b=Bq9uR+djqQK7ZoqxU2AgDDhqB76MFDQLs2Aq0R/A33l7Zr9cDX5SSRHDDVmNZ7R5E0QvciuVCRsuG1dTWyR0NXQtB6+7qTi5Lrs9SrEN6aZfWWBOMBlNHLd6SO8VS8HlqjNqP4FWjbflOHODXR7WnI8Yn9uslt+LCcRrXL0ArBI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=CREfmupk; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="CREfmupk" Received: by smtp.kernel.org (Postfix) with ESMTPSA id C475C1F000E9; Thu, 2 Jul 2026 22:18:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1783030738; bh=uIK2wXZt6lpexw1RHubScXDuScpKzH+Rgz4MJDFq5qU=; h=From:To:Cc:Subject:In-Reply-To:References:Date; b=CREfmupkg9nGL3Ew/EXkU+T+JQ5dKch4+F69AFVz1GLhUkftCOhcFGPBzPexsATpg mQiSkKSBD25mkuLuGkKyDmZzv9I/Ro+8oHqZgvFQhJMxhSecuVGMJmDJSx4ogYFZC3 B2mOYGl5oqKY53a/9CJUhZ6HYNzvYlB0GhRiadeHqeHGmna98l/U9FJc2ewjiKekPw O32zadvoqu44Ue+iLi3eIufTKALzVX4kdUczoVvbSQbq/rxYndz2l9HM2NvqxeQAW5 dTlVRvBWatCFscdttyyBGR44vNEBXE08f7/eboDUucWlsy7T53xYTmGa0ElJSEheJH eVIO69EYIlprQ== From: Thomas Gleixner To: Marek Vasut , linux-pci@vger.kernel.org Cc: Marek Vasut , Marc Zyngier , Yoshihiro Shimoda , Krzysztof =?utf-8?Q?Wilczy=C5=84ski?= , Bjorn Helgaas , Catalin Marinas , Conor Dooley , Geert Uytterhoeven , Krzysztof Kozlowski , Lorenzo Pieralisi , Manivannan Sadhasivam , Rob Herring , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-renesas-soc@vger.kernel.org Subject: Re: [PATCH v3 4/5] irqchip/gic-v3: Add Renesas R-Car Gen4 erratum workaround In-Reply-To: <20260701203918.63189-5-marek.vasut+renesas@mailbox.org> References: <20260701203918.63189-1-marek.vasut+renesas@mailbox.org> <20260701203918.63189-5-marek.vasut+renesas@mailbox.org> Date: Fri, 03 Jul 2026 00:18:55 +0200 Message-ID: <87wlvdm3w0.ffs@fw13> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain On Wed, Jul 01 2026 at 22:37, Marek Vasut wrote: > Renesas R-Car S4/V4H/V4M GIC600 integration has address width for AXI > or APB interface configured to 32 bit, it can therefore access only > the first 4 GiB of physical address space. This information comes from > R-Car V4H Interface Specification sheet, there is currently no technical > update number assigned to this limitation. Further input from hardware > engineer indicates that this limitation also applies to R-Car S4 and V4M. > Name the limitation GEN4GICITS1, and add a driver quirk to mitigate this > limitation. > > The quirk is keyed on the combination of the GIC implementation > and the platform identification in the device tree. > > Acked-by: Marc Zyngier > Co-developed-by: Yoshihiro Shimoda > Signed-off-by: Yoshihiro Shimoda > Signed-off-by: Marek Vasut Assuming this goes through the PCI tree: Acked-by: Thomas Gleixner