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Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1sm6ON-00000007GO7-0O1J; Thu, 05 Sep 2024 06:54:55 +0000 Received: from nyc.source.kernel.org ([147.75.193.91]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1sm6NO-00000007GAr-2RBN for linux-arm-kernel@lists.infradead.org; Thu, 05 Sep 2024 06:53:56 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by nyc.source.kernel.org (Postfix) with ESMTP id 91658A44183; Thu, 5 Sep 2024 06:53:46 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8F689C4CEC5; Thu, 5 Sep 2024 06:53:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1725519233; bh=QqSHyyS9BmFPghapVTq0H/VJnW+c8y5zT1ZtiXkce/4=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=P4bNhajueIlGef934tV5eusLGWWB1iUDYJ51r1o9SDQwcy7fLw1JThRXX3xo6BbNM cioC882O0uSsoywaRspyLryBUGVWXzvrcQuKikoomcL4CDl2ZzOUmiyxomYtVrJIrD L9NaiZ4i52Ho98p/z/gTSTDFB9mJLZ9XR+JMjXnMR1zOncIOR5ajsrSB4SYTRhjwLi kHNcJ0F4pmw/WvszDM1RANbmGi2sz8T+Wm37gLg0wGI+PnE+uVFyj+7EHDe7PbS8Pz 50IvE8F5oHx7xyfueO3GlX/mh+E+/O85iNU41s/p1ka337GHOw7uKQuX+N0+OOCVfW i/TrOO+hl1FtQ== Message-ID: <669fa971-05f2-43f2-8c7b-d9de68d8910f@kernel.org> Date: Thu, 5 Sep 2024 08:53:43 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v4 2/7] dt-bindings: PCI: ti,am65: Extend for use with PVU To: Jan Kiszka Cc: Nishanth Menon , Santosh Shilimkar , Vignesh Raghavendra , Tero Kristo , Rob Herring , Krzysztof Kozlowski , Conor Dooley , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-pci@vger.kernel.org, Siddharth Vadapalli , Bao Cheng Su , Hua Qian Li , Diogo Ivo , Lorenzo Pieralisi , =?UTF-8?Q?Krzysztof_Wilczy=C5=84ski?= , Bjorn Helgaas References: <28d31a14fe9cc1867f023ebaddd6074459d15e40.1725444016.git.jan.kiszka@siemens.com> <4fd1d6e8-8a66-4eff-a995-5f947a4b707d@siemens.com> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240904_235354_777983_0FF59E2E X-CRM114-Status: GOOD ( 16.65 ) 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 05/09/2024 08:40, Jan Kiszka wrote: > On 05.09.24 08:32, Krzysztof Kozlowski wrote: >> On Wed, Sep 04, 2024 at 12:00:11PM +0200, Jan Kiszka wrote: >>> From: Jan Kiszka >>> >>> The PVU on the AM65 SoC is capable of restricting DMA from PCIe devices >>> to specific regions of host memory. Add the optional property >>> "memory-regions" to point to such regions of memory when PVU is used. >>> >>> Since the PVU deals with system physical addresses, utilizing the PVU >>> with PCIe devices also requires setting up the VMAP registers to map the >>> Requester ID of the PCIe device to the CBA Virtual ID, which in turn is >>> mapped to the system physical address. Hence, describe the VMAP >>> registers which are optionally unless the PVU shall used for PCIe. >>> >>> Signed-off-by: Jan Kiszka >>> --- >>> CC: Lorenzo Pieralisi >>> CC: "Krzysztof Wilczyński" >>> CC: Bjorn Helgaas >>> CC: linux-pci@vger.kernel.org >>> --- >>> .../bindings/pci/ti,am65-pci-host.yaml | 52 ++++++++++++++----- >>> 1 file changed, 40 insertions(+), 12 deletions(-) >>> >>> diff --git a/Documentation/devicetree/bindings/pci/ti,am65-pci-host.yaml b/Documentation/devicetree/bindings/pci/ti,am65-pci-host.yaml >>> index 0a9d10532cc8..d8182bad92de 100644 >>> --- a/Documentation/devicetree/bindings/pci/ti,am65-pci-host.yaml >>> +++ b/Documentation/devicetree/bindings/pci/ti,am65-pci-host.yaml >>> @@ -19,16 +19,6 @@ properties: >>> - ti,am654-pcie-rc >>> - ti,keystone-pcie >>> >>> - reg: >>> - maxItems: 4 >>> - >>> - reg-names: >>> - items: >>> - - const: app >>> - - const: dbics >>> - - const: config >>> - - const: atu >> >> >> Nothing improved here. > > Yes, explained the background to you. Sorry, if you do not address my > replies, I'm lost with your feedback. My magic ball could not figure out the problem, so did not provide the answer. I gave you the exact code which illustrates how to do it. If you do it that way: it works. If you do it other way: it might not work. However without seeing anything, magic ball was silent, so I am not participating in game: would you be so kind to give more information so I won't waste my day in asking what is wrong. Best regards, Krzysztof