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Tue, 5 May 2026 07:41:21 -0500 Received: from localhost (uda0133052.dhcp.ti.com [128.247.81.232]) by lelvem-mr05.itg.ti.com (8.18.1/8.18.1) with ESMTP id 645CfLZi3262567; Tue, 5 May 2026 07:41:21 -0500 Date: Tue, 5 May 2026 07:41:21 -0500 From: Nishanth Menon To: "Markus Schneider-Pargmann (TI)" Subject: Re: [PATCH v4 1/4] arm64: dts: ti: k3-am62a7-sk: Split r5f memory region Message-ID: <20260505124121.hffywentvo5pusfx@glowing> References: <20260429-topic-am62a-ioddr-dt-v6-19-v4-0-fc27d6ac753c@baylibre.com> <20260429-topic-am62a-ioddr-dt-v6-19-v4-1-fc27d6ac753c@baylibre.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: <20260429-topic-am62a-ioddr-dt-v6-19-v4-1-fc27d6ac753c@baylibre.com> X-C2ProcessedOrg: 333ef613-75bf-4e12-a4b1-8e3623f5dcea X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BL02EPF0001A0FB:EE_|MN6PR10MB7519:EE_ X-MS-Office365-Filtering-Correlation-Id: 02e83d71-098b-4b62-bc96-08deaaa39d27 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|82310400026|1800799024|36860700016|7416014|376014|22082099003|56012099003|18002099003; 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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: 97jPKgXnZ07udIk1s1A5KTm7Pk/R5gLswfnhZL2Dvfv/l1DNxL+gX/vT9I/k45y6tfsGPlT5yhZI5KDzqZt/iXB75bn2UM0FqP8YF/H5BVR35qb3Z3z1e8WgTcKYZF9aSjAaZ2vgKGDrwVPP/jpSft4lC8NjigQoiqh47G58R1H/c26AcmizjXuo1DH/BNd9M5/et1VTsQuuwqdQKi3DRbC5652w+Um7zdUAMYc28ZWobI+qyn+2rYCCtMF82nzImB9dZ0fHZgARTyU4IMBIbIngMJiJR6cQoglxSN8vk8TD90A6VSn+2B7zA+ydV3dkI523n9vHgxg2e1DvMqvXdXGWR2MeHfIHbL4Xi1u+2m6qC2uHo2ZQ1+KmObJb2nYTpd+1m2lTkgDh4yp2n0YdVYCS6twanFQDLSRkK00Z9gp419Nroffq7OCiZG0xBt+P X-OriginatorOrg: ti.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 05 May 2026 12:41:22.5000 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 02e83d71-098b-4b62-bc96-08deaaa39d27 X-MS-Exchange-CrossTenant-Id: e5b49634-450b-4709-8abb-1e2b19b982b7 X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=e5b49634-450b-4709-8abb-1e2b19b982b7;Ip=[198.47.23.195];Helo=[lewvzet201.ext.ti.com] X-MS-Exchange-CrossTenant-AuthSource: BL02EPF0001A0FB.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN6PR10MB7519 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260505_054128_492489_F3459F1A X-CRM114-Status: GOOD ( 20.42 ) 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: , Cc: Rob Herring , Conor Dooley , Vignesh Raghavendra , Mathieu Poirier , Dhruva Gole , Akashdeep Kaur , Kevin Hilman , Bjorn Andersson , linux-remoteproc@vger.kernel.org, linux-kernel@vger.kernel.org, Kendall Willis , devicetree@vger.kernel.org, Vishal Mahaveer , Sebin Francis , Krzysztof Kozlowski , Tero Kristo , linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 15:22-20260429, Markus Schneider-Pargmann (TI) wrote: > Split the firmware memory region in more specific parts so it is better > described where to find which information. Specifically the LPM metadata > region is important as bootloader software like U-Boot has to know where > that data is to be able to read that data. > > Signed-off-by: Markus Schneider-Pargmann (TI) > --- > arch/arm64/boot/dts/ti/k3-am62a7-sk.dts | 40 +++++++++++++++++++++++++++++++-- > 1 file changed, 38 insertions(+), 2 deletions(-) > > diff --git a/arch/arm64/boot/dts/ti/k3-am62a7-sk.dts b/arch/arm64/boot/dts/ti/k3-am62a7-sk.dts > index c1e9067b3bdd5ab0591541d4685bb17a5dac4f65..6f2ee93c7be141ee5ae3f1e3324d3a060db069f6 100644 > --- a/arch/arm64/boot/dts/ti/k3-am62a7-sk.dts > +++ b/arch/arm64/boot/dts/ti/k3-am62a7-sk.dts > @@ -59,9 +59,33 @@ wkup_r5fss0_core0_dma_memory_region: memory@9c800000 { > no-map; > }; > > - wkup_r5fss0_core0_memory_region: memory@9c900000 { > + wkup_r5fss0_core0_ipc_region: memory@9c900000 { Looks like you have'nt addressed Vignesh's comments from previous revision. https://lore.kernel.org/all/DHS46FH9ZYZB.3BG6HVH832NAE@baylibre.com/ We dropped wkup_r5fss0_core0_memory_region here.. > #include "k3-am62a-ti-ipc-firmware.dtsi" In this file: https://git.kernel.org/pub/scm/linux/kernel/git/ti/linux.git/tree/arch/arm64/boot/dts/ti/k3-am62a-ti-ipc-firmware.dtsi#n27 https://git.kernel.org/pub/scm/linux/kernel/git/ti/linux.git/tree/arch/arm64/boot/dts/ti/k3-am62a-ti-ipc-firmware.dtsi#n68 I am not clear where wkup_r5fss0_core0_memory_region is now defined. BUT, in the patch, we introduce: > + > +&wkup_r5fss0_core0 { > + memory-region = <&wkup_r5fss0_core0_dma_memory_region>, > + <&wkup_r5fss0_core0_ipc_region>, > + <&wkup_r5fss0_core0_lpm_fs_stub_region>, > + <&wkup_r5fss0_core0_lpm_metadata_region>, > + <&wkup_r5fss0_core0_lpm_rest_region>, > + <&wkup_r5fss0_core0_dm_region>; > + memory-region-names = "dma", "ipc", "lpm-stub", > + "lpm-metadata", "lpm-context", > + "dm-firmware"; > +}; So we go ahead an override the definitions of ipc-firmware.dtsi for wkup_r5fss0_core0 here - explaining why the build does'nt fail. I am confused why the ipc firmware dtsi was'nt updated instead? is this something different firmware dtsi now? if so, we should split the ipc-firmware.dtsi accordingly. Commit message does'nt mention the same either. This right solution is to make up our minds if ipc-firmware.dtsi is meant for LPM mode support or not. if not, split the dtsi, if yes, do the mods in the ipc.dtsi -- Regards, Nishanth Menon Key (0xDDB5849D1736249D) / Fingerprint: F8A2 8693 54EB 8232 17A3 1A34 DDB5 849D 1736 249D https://ti.com/opensource