From patchwork Thu Jul 4 08:42:06 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dhruva Gole X-Patchwork-Id: 1956733 X-Patchwork-Delegate: trini@ti.com Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=ti.com header.i=@ti.com header.a=rsa-sha256 header.s=ti-com-17Q1 header.b=GzSQechI; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=lists.denx.de (client-ip=85.214.62.61; helo=phobos.denx.de; envelope-from=u-boot-bounces@lists.denx.de; receiver=patchwork.ozlabs.org) Received: from phobos.denx.de (phobos.denx.de [85.214.62.61]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (secp384r1)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4WF9F047yRz1xqb for ; Thu, 4 Jul 2024 18:44:36 +1000 (AEST) Received: from h2850616.stratoserver.net (localhost [IPv6:::1]) by phobos.denx.de (Postfix) with ESMTP id C8BEA88910; Thu, 4 Jul 2024 10:44:05 +0200 (CEST) Authentication-Results: phobos.denx.de; dmarc=pass (p=quarantine dis=none) header.from=ti.com Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=u-boot-bounces@lists.denx.de Authentication-Results: phobos.denx.de; dkim=pass (1024-bit key; unprotected) header.d=ti.com header.i=@ti.com header.b="GzSQechI"; dkim-atps=neutral Received: by phobos.denx.de (Postfix, from userid 109) id AAB3F888CC; Thu, 4 Jul 2024 10:44:04 +0200 (CEST) X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on phobos.denx.de X-Spam-Level: X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED,RCVD_IN_VALIDITY_RPBL_BLOCKED, SPF_HELO_PASS,SPF_PASS autolearn=ham autolearn_force=no version=3.4.2 Received: from fllv0016.ext.ti.com (fllv0016.ext.ti.com [198.47.19.142]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by phobos.denx.de (Postfix) with ESMTPS id 95A9F888E4 for ; Thu, 4 Jul 2024 10:44:02 +0200 (CEST) Authentication-Results: phobos.denx.de; dmarc=pass (p=quarantine dis=none) header.from=ti.com Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=d-gole@ti.com Received: from lelv0266.itg.ti.com ([10.180.67.225]) by fllv0016.ext.ti.com (8.15.2/8.15.2) with ESMTP id 4648hrvi021762; Thu, 4 Jul 2024 03:43:53 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1720082633; bh=Llt+ZiRoW4OczpFqiA/tq0i+0WDrqbhjbTBf3elV7sQ=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=GzSQechIyAmD2srtzS96D1nMcaw/tbce0DnSlc+u7U8Lc0wBoFsuxdnL7Qb4ddcqm QLWqRcl38emXYDC5Q5l650nu4Fp56cnra21Px8qM7/klODMTIksHcolQO2mCrlIHNF pdNJJ7PltAiQZNlqkLAM19pmr32Re9VtAskGrMZI= Received: from DFLE114.ent.ti.com (dfle114.ent.ti.com [10.64.6.35]) by lelv0266.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 4648hrB8018969 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Thu, 4 Jul 2024 03:43:53 -0500 Received: from DFLE108.ent.ti.com (10.64.6.29) by DFLE114.ent.ti.com (10.64.6.35) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.23; Thu, 4 Jul 2024 03:43:53 -0500 Received: from lelvsmtp6.itg.ti.com (10.180.75.249) by DFLE108.ent.ti.com (10.64.6.29) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.23 via Frontend Transport; Thu, 4 Jul 2024 03:43:53 -0500 Received: from dhruva.dhcp.ti.com (dhruva.dhcp.ti.com [172.24.227.68]) by lelvsmtp6.itg.ti.com (8.15.2/8.15.2) with ESMTP id 4648hPV8010413; Thu, 4 Jul 2024 03:43:49 -0500 From: Dhruva Gole To: Tom Rini CC: , Neha Malcom Francis , Nishant Menon , , , , Robert Nelson , Vibhore Vardhan , Vishal Mahaveer , Sebin Francis , Wadim Egorov , , , Daniel Schultz , Dhruva Gole Subject: [PATCH V4 4/6] doc: ti: k3: Add TIFS Stub documentation Date: Thu, 4 Jul 2024 14:12:06 +0530 Message-ID: <20240704084207.2211801-5-d-gole@ti.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240704084207.2211801-1-d-gole@ti.com> References: <20240704084207.2211801-1-d-gole@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.39 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" X-Virus-Scanned: clamav-milter 0.103.8 at phobos.denx.de X-Virus-Status: Clean Add documentation to briefly explain the role of TIFS Stub in relevant K3 SoC's. Signed-off-by: Dhruva Gole --- doc/board/ti/k3.rst | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/doc/board/ti/k3.rst b/doc/board/ti/k3.rst index 67b066a07d3a..2f63852b3801 100644 --- a/doc/board/ti/k3.rst +++ b/doc/board/ti/k3.rst @@ -193,6 +193,11 @@ online device resources such as power, clock, interrupts, dma etc. This firmware runs on a dedicated or multi-use microcontroller outside the security enclave. + * **TIFS Stub** - A small piece of code that helps restore the remaining + context and resume the TIFS firmware when resuming from Low Power Modes + like Suspend-to-RAM/ Deep Sleep. It is loaded into the ATCM (Tightly + Coupled Memory 'A' of the DM R5) during DM startup. This applies only + to AM62x, AM62A and AM62P based devices. OR