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Mon, 4 Jan 2021 07:16:43 -0600 Received: from DLEE106.ent.ti.com (157.170.170.36) by DLEE103.ent.ti.com (157.170.170.33) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1979.3; Mon, 4 Jan 2021 07:16:42 -0600 Received: from lelv0326.itg.ti.com (10.180.67.84) by DLEE106.ent.ti.com (157.170.170.36) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1979.3 via Frontend Transport; Mon, 4 Jan 2021 07:16:43 -0600 Received: from localhost (ileax41-snat.itg.ti.com [10.172.224.153]) by lelv0326.itg.ti.com (8.15.2/8.15.2) with ESMTP id 104DGge2093061; Mon, 4 Jan 2021 07:16:42 -0600 Date: Mon, 4 Jan 2021 07:16:42 -0600 From: Nishanth Menon To: Kishon Vijay Abraham I Subject: Re: [PATCH v3 0/6] PCI: J7200/J721E PCIe bindings Message-ID: <20210104131642.m5rgpkhnrffq5nrx@circular> References: <20210104122232.24071-1-kishon@ti.com> <20210104125910.qaf7vi3dx6vsne6t@backfield> <465097c1-2d38-ad45-cc32-d92c385114c5@ti.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <465097c1-2d38-ad45-cc32-d92c385114c5@ti.com> User-Agent: NeoMutt/20171215 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210104_081645_028615_8EA33314 X-CRM114-Status: GOOD ( 25.80 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, Rob Herring , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 18:40-20210104, Kishon Vijay Abraham I wrote: > Nishanth, > > On 04/01/21 6:29 pm, Nishanth Menon wrote: > > On 17:52-20210104, Kishon Vijay Abraham I wrote: > >> Patch series adds DT nodes in order to get PCIe working in J7200. > >> Also includes couple of fixes for J721e. > >> > >> v1 of the patch series can be found @ [1] > >> v2 of the patch series can be found @ [2] > >> > >> Changes from v2: > >> 1) Moved serdes_refclk node out of interconnect node and also replaced > >> "_" with "-" > >> > >> Changes from v1: > >> 1) Include only the device tree patches here (the binding patch is sent > >> separately) > >> 2) Include couple of patches that fixes J721E DTS. > >> > >> [1] -> http://lore.kernel.org/r/20201102101154.13598-1-kishon@ti.com > >> [2] -> http://lore.kernel.org/r/20201210130747.25436-1-kishon@ti.com > >> > >> Kishon Vijay Abraham I (6): > >> arm64: dts: ti: k3-j721e-main: Fix supported max outbound regions > >> arm64: dts: ti: k3-j721e-main: Remove "syscon" nodes added for > >> pcieX_ctrl > >> arm64: dts: ti: k3-j7200-main: Add SERDES and WIZ device tree node > >> arm64: dts: ti: k3-j7200-main: Add PCIe device tree node > >> arm64: dts: ti: k3-j7200-common-proc-board: Enable SERDES0 > >> arm64: dts: ti: k3-j7200-common-proc-board: Enable PCIe > >> > >> .../dts/ti/k3-j7200-common-proc-board.dts | 38 ++++++ > >> arch/arm64/boot/dts/ti/k3-j7200-main.dtsi | 111 ++++++++++++++++++ > >> arch/arm64/boot/dts/ti/k3-j721e-main.dtsi | 52 ++------ > >> 3 files changed, 157 insertions(+), 44 deletions(-) > > > > > > A bit confused on the dependency here. is there something merged into > > next-20210104 that makes this series ready for pickup? is there a way > > I can get a immutable tag for driver fixups to pull so that my dts > > next is not broken for PCIe (I am assuming looking at the series that > > this is probably not a backward compatible series?)? > > There are no driver changes for the basic J7200 PCIe support and the DT > bindings are already merged [1]. > > There are few errata fixes applicable for J721E which has to be removed > for J7200 but that depends on other patches to be merged [1] but that > doesn't impact j7200 functionality. > > [1] -> > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/devicetree/bindings/pci/ti,j721e-pci-host.yaml#n19 > [2] -> http://lore.kernel.org/r/20201230120515.2348-1-nadeem@cadence.com So, Dropping stuff like "cdns,max-outbound-regions" (change from 16 to 32) will work on older kernels? Could you do a quick sanity check on the couple of "fixes" patches in this thread is not breaking functionality introduced in the older stable kernels? -- Regards, Nishanth Menon Key (0xDDB5849D1736249D) / Fingerprint: F8A2 8693 54EB 8232 17A3 1A34 DDB5 849D 1736 249D _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel