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 0C9FAC982ED for ; Mon, 21 Sep 2026 17:28:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:CC:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=j3OFlUQBxN9agIpNKi5lnHusJ88SHWIFUzPy8SYBk+A=; b=KQILqHsCKrJdVE+EwPA3PWKbdq Ayx7Z4C4ko9pfTVC6DlvwfokbnRQ+lwHgqDZTyU74U1Z3IFDuhQgn9clZnl+6XPIsFEyAnaTfYbir ABI0D4xZlV8BJJWt4FBccEFDQEWdloEFR8XiREGw0z31sx54VRpgmJ68TTLXBn/Qh7tRNam9MHta6 oKYfNIHKDy4MwjlT1ESMtBbyGCZLtXwkE4XboJjUZ6+wONqDN1mOiPuwi7xD7CEzrbcCXbn+s1Rzc N9eVwlEkvRKVLZefPbdQyzbmbbbYo+OdFiRZeZit8uDDqhibZElww5S+JgeHkzwwFQyhFLDq7TdlY 1aNHp+CQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1x8hoB-00000002ykM-1isP; Mon, 21 Sep 2026 17:28:03 +0000 Received: from mx0b-0002e601.pphosted.com ([148.163.154.28]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1x8ho8-00000002yjn-1sly for linux-arm-kernel@lists.infradead.org; Mon, 21 Sep 2026 17:28:02 +0000 Received: from pps.filterd (m0374956.ppops.net [127.0.0.1]) by mx0b-0002e601.pphosted.com (8.18.1.11/8.18.1.11) with ESMTP id 68LGuOIY4140747; Mon, 21 Sep 2026 12:27:57 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; h=cc :content-type:date:from:in-reply-to:message-id:mime-version :references:subject:to; s=proofpoint-05-2026; bh=j3OFlUQBxN9agIp NKi5lnHusJ88SHWIFUzPy8SYBk+A=; b=qqGE0qZul2dCaCnWjlYD4wUf//7KA/M Mp9HQyEYlGuiPPUKAW7luyMZ45uzlNUhIwt45Og66uZW6F67HR/5JlIN5vv19cCq s3S1QuPagnjeY3Pnv0daKflwFHfZO7GBB5bOvqTBQ4oiYe+2qw7rfsIFtuJ/HFSB IHd9Di26DLG3GzAOgZaaE3xK2VOj2jBLOLUMFzFrJuNilwRCq3fPFNsEGh3TT8Xy i0XiLhlZ/P7KP6Tu9iWuatCHJI6lT4Ur8d3kVa89jGBeUD+OB2KlHF9jFZwdMEI+ 2ERd0rBebREOFeXz53sZS5ogjNWRiK2zvROp4qTROlgLS6L1rafA5oA== Received: from sn4pr0501cu005.outbound.protection.outlook.com (mail-southcentralusazon11011035.outbound.protection.outlook.com [40.93.194.35]) by mx0b-0002e601.pphosted.com (PPS) with ESMTPS id 4gtx9fc31w-1 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NOT); Mon, 21 Sep 2026 12:27:57 -0500 (CDT) ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=vR1Y816dHGfqRGT+rKiUHWJpCj4Ni1/1iVSlRArUH5gHg7+beLnN4J3m7owA2xbuCZvfvHTFqd4JfbVMF7xQJgqc9KmVbdAnxscMpUmvUESmmYWetRXfphcrnYDwtZ0gCsvShBNB3yGMVfaUbvVndbgrvKR92rpgAe1cIXCsP974uD+06Fb4HCEAR4E9fkoC+A11ycBOMZRBuekyWRvt+GVA3Jexyk16yjo8KqDFnQSyAQydQbok3UHexFxH4fQoIoylhjJZ31n3+SPVw4Sleib6IpVKPm57ex5Meb42+b3ucf0IWjMpYZXUa4xzdW9yeC/t4x09pdkLCnQCGu3eRQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector10001; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=j3OFlUQBxN9agIpNKi5lnHusJ88SHWIFUzPy8SYBk+A=; b=YMj1oj1LI2ORYfDLGbIOzBEzqRKI+IhpyNtB0s8EZlzAE9Ok7jv/r4zGSbTp0a9S1fpEC9Q0stS2wpgNUNroob4f2ZppFn/EuPAJpNksAoOl9gOL7OgTOE30UClkJrda8dt2EfcqqdpdWSOYQVT5G9Hwg61Ouah2f6J/915s8ilIzV6WATwM/yuVnw/v7+x/2UY+Yk8VDomVmemn2NWUY6O8M8QotwDqGSt8yWhh+CpLQaiW1IOEZ50GpDFfzeLuEy0zgiV65MlawWpMx2jXBT24FGm7mBuolD8L1E/sQC/3V4srqYzdV+o7Oy/jipnIQxBsoSgiwEgftZ+UCIgyKA== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 198.47.23.195) smtp.rcpttodomain=vger.kernel.org smtp.mailfrom=ti.com; dmarc=pass (p=quarantine sp=none pct=100) action=none header.from=ti.com; dkim=none (message not signed); arc=none (0) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=j3OFlUQBxN9agIpNKi5lnHusJ88SHWIFUzPy8SYBk+A=; b=AeP8MUlDyCD5beTmpUyi638BFIArc9BzjWhQArGbNg+wJvr4s+WEv2QtUsrdfKdBfrJhrYbh3RUTXziuZ+W5yN05+FmWi0ZNjyf8ehKz1Yc7qU9qgXUOgVYVNmHKWZ+KFAa+y4DVTEUmK0yJwe4AOYG5iZ1wjvHAhnt4Xub8hKo= Received: from SJ0PR13CA0126.namprd13.prod.outlook.com (2603:10b6:a03:2c6::11) by PH7PR10MB5878.namprd10.prod.outlook.com (2603:10b6:510:127::20) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.21.451.13; Mon, 21 Sep 2026 17:27:53 +0000 Received: from BY1PEPF0001AE1A.namprd04.prod.outlook.com (2603:10b6:a03:2c6:cafe::8c) by SJ0PR13CA0126.outlook.office365.com (2603:10b6:a03:2c6::11) with Microsoft SMTP Server (version=TLS1_3, cipher=TLS_AES_256_GCM_SHA384) id 15.21.451.12 via Frontend Transport; Mon, 21 Sep 2026 17:27:53 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 198.47.23.195) smtp.mailfrom=ti.com; dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=ti.com; Received-SPF: Pass (protection.outlook.com: domain of ti.com designates 198.47.23.195 as permitted sender) receiver=protection.outlook.com; client-ip=198.47.23.195; helo=lewvzet201.ext.ti.com; pr=C Received: from lewvzet201.ext.ti.com (198.47.23.195) by BY1PEPF0001AE1A.mail.protection.outlook.com (10.167.242.102) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.21.451.8 via Frontend Transport; Mon, 21 Sep 2026 17:27:53 +0000 Received: from DLEE204.ent.ti.com (157.170.170.84) by lewvzet201.ext.ti.com (10.4.14.104) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.45; Mon, 21 Sep 2026 12:27:46 -0500 Received: from DLEE215.ent.ti.com (157.170.170.118) by DLEE204.ent.ti.com (157.170.170.84) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.45; Mon, 21 Sep 2026 12:27:46 -0500 Received: from lelvem-mr06.itg.ti.com (10.180.75.8) by DLEE215.ent.ti.com (157.170.170.118) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.45 via Frontend Transport; Mon, 21 Sep 2026 12:27:46 -0500 Received: from localhost (uda0133052.dhcp.ti.com [128.247.81.232] (may be forged)) by lelvem-mr06.itg.ti.com (8.18.1/8.18.1) with ESMTP id 68LHRkhR2503018; Mon, 21 Sep 2026 12:27:46 -0500 Date: Mon, 21 Sep 2026 12:27:46 -0500 From: Nishanth Menon To: Brandon Brnich CC: "Kumar, Udit" , , , , , , , , , Subject: Re: [PATCH v2 4/6] arm64: dts: ti: k3-j784s4-j742s2-main-common: Assign SRAM to VPU nodes Message-ID: <20260921172746.jge67yswqjeolwz3@impulse> References: <20260810205206.685971-1-b-brnich@ti.com> <20260810205206.685971-5-b-brnich@ti.com> <01ff0252-1580-4934-af34-6ef70d874f10@ti.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: <01ff0252-1580-4934-af34-6ef70d874f10@ti.com> X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BY1PEPF0001AE1A:EE_|PH7PR10MB5878:EE_ X-MS-Office365-Filtering-Correlation-Id: 0a397910-dd88-479e-cdea-08df1805ab5a X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|23010399003|36860700016|1800799024|82310400026|56012099006|4143699003|10067099003|18002099003|22082099003; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:198.47.23.195;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:lewvzet201.ext.ti.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230040)(376014)(23010399003)(36860700016)(1800799024)(82310400026)(56012099006)(4143699003)(10067099003)(18002099003)(22082099003);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: TzzijbvkUQnoeHKmq7hRgn+4VkCfS/TQf7ohR9tvlquw+MlSe/JTGGn0Dwgdz/Z997LFOfdCl1Yjpg44q6WwKE/jXE1gSX8O13sNWvBqIAsABDVzZSp6ZEO3aNCCynnHkJPZkNe/svDnUhAsUVYSvsrS6ryi6JQkxCjytmmnqXAfJsOVEQiGYYPhEMt4tnJ4ooWiHK+jWaGVQPcVNE/IZi+UE5GSZMxZ9LvsQV+3nnIrPILQR7tZx72ukBVUnogqVD3S+j593aVqRx0Sd3Jm8RkCOobpVz4WjFtO5PFExqqLuffStbHxonudRA5TubpRrewuiol6d+S6Cp76ASf9TEP7ajrK+sAW1+HBDSv/ncS9pXkkkxK3SmqQuOOah/ZOvzg3EF7OcBpgt9NKjzRA0bMKoF3m0eMjgWYMaT3ID/TZVNLE94K6FTz6onVo4au2 X-Exchange-RoutingPolicyChecked: FJJ6ncOzuRXgeDFKsSc4fJ/bte1QhCt/rb79MxJp8rQFm3thizMiwokZe47jvPmzioPI3QUTlMfL7NkBmsMSbVFLY52uEmz66of+yF30vjq5f9lwMTCOV11vPffP7z/qgk+xJxZxujjNiURPjO0NlLtzOAedafz5aNcBjBRfd45kjNAH5W7crAdb48AvUQC5j0X8kC4iz21631HXZSTbfIzk0CYX1e028eOCeqQczqHpSkHBMtSAKSpObCzBMvWRKJq96Qtwg0iH5PN0WO8pXFSOrLYqKQcmOgVEhTBSjs97z5I5Hik9vEkNm2/2NXFTDHBdYTHs6ywt8ibJf6ocYQ== X-OriginatorOrg: ti.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 21 Sep 2026 17:27:53.7284 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 0a397910-dd88-479e-cdea-08df1805ab5a 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: BY1PEPF0001AE1A.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH7PR10MB5878 X-Authority-Analysis: v=2.4 cv=Vou2kO2n c=1 sm=1 tr=0 ts=6ab1691d cx=c_pps a=ALJIVG5iHo/ZE5SKMfQyZg==:117 a=f+v6EHfkeJbVwR46tk4DMg==:17 a=6eWqkTHjU83fiwn7nKZWdM+Sl24=:19 a=kj9zAlcOel0A:10 a=VdqzKS8jKosA:10 a=s63m1ICgrNkA:10 a=V5UXEbMT0ywA:10 a=VkNPw1HP01LnGYTKEx00:22 a=Z8NIEmU8O1QQgoT56wFK:22 a=jwouBfj2j3NM8CExmVVE:22 a=sozttTNsAAAA:8 a=3V7uXGYgJxE3oTHjHdEA:9 a=CjuIK1q_8ugA:10 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwOTIxMDI1NSBTYWx0ZWRfX6G5+38Eo+9Nb 1RY2iyWaMHhMspDqQCdHpvhn0k3vNZu1liaiU1i1LR9OsonaGC2m/u85ac8D7uzxwCWalQaUQG2 bpiTE5eai7H/HEw3K948G6/155bfa7PwBGIVp9QSj5aK33BPBfb5ngUgBrMvBGXr/eQ+ALGCTun i+cloWwnoBd5TPrrF3YM2SiYUqXTt7NtNXVaSeZFdQFo06qf7/FTaA/pTAS31Lcp0gmoqVgsBJ8 Jn+T/azJn620dt53ZXSlUL/O3l+LNMn86XpHJNqsOdfd9AmbKO2m4mqChl62wCQj7Woqt3lDjNs +tX4OYE2Vsb7zO3qFHJFcklX5rq3PmR8GfF6WRZfc4YUHujYjAqTRAXJrSNfLwcE4Vq26cNzM4O sAAhIDPIzIT4ZF8CyBlkCVwk/gFv3AWQndJB26lkIPmqB5M8k/Vun5nEYG9Y7c6X4/Wjeph8sXS lZiQfrRsJPZgLO8XDiQ== X-Proofpoint-Spam-Info: AW1haW4tMjYwOTIxMDI1NSBTYWx0ZWRfX381vBJBs/R2O 5rEkJg9ruM8syM8grFMPH8VjwC8i8uen8zM013VYyF7FwMmZPCtLbx//Ci+pG3+4WW//X7oUBUc VfMbwynsloh2DBWamyXKFpBZxyEreyQ= X-Proofpoint-ORIG-GUID: l82YWqnufQY4h7HxMG_SorrStPp4tH0H X-Proofpoint-GUID: l82YWqnufQY4h7HxMG_SorrStPp4tH0H X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-09-21_05,2026-09-21_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 bulkscore=0 priorityscore=1501 malwarescore=0 lowpriorityscore=0 spamscore=0 suspectscore=0 adultscore=0 phishscore=0 clxscore=1015 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2609040000 definitions=main-2609210255 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260921_102800_602149_68109F94 X-CRM114-Status: GOOD ( 23.33 ) 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 10:31-20260921, Brandon Brnich wrote: > > > diff --git a/arch/arm64/boot/dts/ti/k3-j784s4-j742s2-main-common.dtsi b/arch/arm64/boot/dts/ti/k3-j784s4-j742s2-main-common.dtsi > > > index e836f0f42e30d..21ec9f207ff63 100644 > > > --- a/arch/arm64/boot/dts/ti/k3-j784s4-j742s2-main-common.dtsi > > > +++ b/arch/arm64/boot/dts/ti/k3-j784s4-j742s2-main-common.dtsi > > > @@ -1002,6 +1002,7 @@ vpu0: video-codec@4210000 { > > > interrupts = ; > > > clocks = <&k3_clks 241 2>; > > > power-domains = <&k3_pds 241 TI_SCI_PD_EXCLUSIVE>; > > > + sram = <&main_navss_sram>; > > > }; > > > vpu1: video-codec@4220000 { > > > @@ -1010,6 +1011,7 @@ vpu1: video-codec@4220000 { > > > interrupts = ; > > > clocks = <&k3_clks 242 2>; > > > power-domains = <&k3_pds 242 TI_SCI_PD_EXCLUSIVE>; > > > + sram = <&main_navss_sram>; > > > }; > > > > Hello Brandon, > > Could you check, how two instances of hardware can share same sram ? > > If both instances are used in parallel, then only 1 would get the benefits > of b/w savings with this current patch. These VPU instances are in a race to > see who gets the pool depending on which instance allocates the first > stream. Current Wave5 driver will take the entire 64 KB pool once a stream > is opened. The pool is not released until all associated streams with that > instance are freed. > > I will look to see if the driver can be modified at all here. If it can't, > then I will find another node of available SRAM that I can hook up to 2nd > instance. For now, we can drop this patch and associated patch adding > main_navss_sram to J784s4 in this series. OK - What do i translate this as? We may need to change SRAM / need more SRAM? Since this is a pool, I'd rather have the driver use SRAM optimally before pulling in more SoC SRAM - if we really need it, lets send an update explaining the usecase where more SRAM was needed. Am I correct? -- Regards, Nishanth Menon Key (0xDDB5849D1736249D) / Fingerprint: F8A2 8693 54EB 8232 17A3 1A34 DDB5 849D 1736 249D https://ti.com/opensource