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 BCC3CCAC581 for ; Mon, 8 Sep 2025 18:21:54 +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:Content-Type: Content-Transfer-Encoding:MIME-Version:References:In-Reply-To:Message-ID:Date :Subject:CC:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=Zo14xNjz2r9AcMZBRCHyJE0PzkloRDSfzfKMBl+WDBg=; b=0H9e4uTtBrqGlxY4YL7pFh7xXF ZuZbvU+DkXh62dfqfiVZNfCBaaLFEfdAIiJckl/y8LSQfc3u43kWartMthSnAKZ/2yTgpHh29Nml+ +5QR9KpH3JubakmfAdTs4Jz0a1apyHO9tWKxvMr1j63ORsb64E1Sl4YWhYte36581vB5Zt/m7kuUD kI5L9m6Pg11GoZcsPZ4Z7n2G2MW8JbDItC/LByf7JGH0zyCsmgo/3W1zBsGSRzanHey4HcqmX1Dko yrpiAC7IKBB0v27SvyXW+GYEC7DRf1afh861xwkYOlHz0LIcyo0hpaIdDEqNI5V5e2JHNKCbYtyG4 jJxp1Pkg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1uvgUv-00000001VTr-3Nf8; Mon, 08 Sep 2025 18:21:49 +0000 Received: from fllvem-ot04.ext.ti.com ([198.47.19.246]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1uvctJ-000000007Os-1ml6 for linux-arm-kernel@lists.infradead.org; Mon, 08 Sep 2025 14:30:47 +0000 Received: from lelvem-sh01.itg.ti.com ([10.180.77.71]) by fllvem-ot04.ext.ti.com (8.15.2/8.15.2) with ESMTP id 588EUhc7071678; Mon, 8 Sep 2025 09:30:43 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1757341843; bh=Zo14xNjz2r9AcMZBRCHyJE0PzkloRDSfzfKMBl+WDBg=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=hnHWpCrudUoYB99ijoB+UAS3NaWVv5XYOZqQasiEsl42XXa5rUONUMLHqV+YrXTqr TjMtD07o5pnXSzU44wO7PifMZWExjoJncgD53jbXi5PP/vVucR2kWZu2CJgIStl71b aER03IyFykKoSJ61Ds5qd+Tu9P0Js3ErYy9AXIbU= Received: from DFLE104.ent.ti.com (dfle104.ent.ti.com [10.64.6.25]) by lelvem-sh01.itg.ti.com (8.18.1/8.18.1) with ESMTPS id 588EUhoU2466049 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-SHA256 bits=128 verify=FAIL); Mon, 8 Sep 2025 09:30:43 -0500 Received: from DFLE107.ent.ti.com (10.64.6.28) by DFLE104.ent.ti.com (10.64.6.25) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.55; Mon, 8 Sep 2025 09:30:42 -0500 Received: from lelvem-mr05.itg.ti.com (10.180.75.9) by DFLE107.ent.ti.com (10.64.6.28) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.55 via Frontend Transport; Mon, 8 Sep 2025 09:30:42 -0500 Received: from uda0510294.dhcp.ti.com (uda0510294.dhcp.ti.com [172.24.234.212]) by lelvem-mr05.itg.ti.com (8.18.1/8.18.1) with ESMTP id 588ESecx1037553; Mon, 8 Sep 2025 09:30:38 -0500 From: Beleswar Padhi To: , , , , , CC: , , , , , , , , Subject: [PATCH v4 21/34] Revert "arm64: dts: ti: k3-j721e-sk: Fix reversed C6x carveout locations" Date: Mon, 8 Sep 2025 19:58:13 +0530 Message-ID: <20250908142826.1828676-22-b-padhi@ti.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250908142826.1828676-1-b-padhi@ti.com> References: <20250908142826.1828676-1-b-padhi@ti.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-C2ProcessedOrg: 333ef613-75bf-4e12-a4b1-8e3623f5dcea X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250908_073045_555694_6C48352C X-CRM114-Status: GOOD ( 11.10 ) 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 This reverts commit 9f3814a7c06b7c7296cf8c1622078ad71820454b. The C6x carveouts are reversed intentionally. This is due to the requirement to keep the DMA memory region as non-cached, however the minimum granular cache region for C6x is 16MB. So, C66x_0 marks the entire C66x_1 16MB memory carveouts as non-cached, and uses the DMA memory region of C66x_1 as its own, and vice-versa. This was also called out in the original commit which introduced these reversed carveouts: "The minimum granularity on the Cache settings on C66x DSP cores is 16MB, so the DMA memory regions are chosen such that they are in separate 16MB regions for each DSP, while reserving a total of 16 MB for each DSP and not changing the overall DSP remoteproc carveouts." Fixes: 9f3814a7c06b ("arm64: dts: ti: k3-j721e-sk: Fix reversed C6x carveout locations") Signed-off-by: Beleswar Padhi --- v4: Changelog: 1. Updated carveout node names to generic 'memory@addr' Link to v3: https://lore.kernel.org/all/20250905051846.1189612-21-b-padhi@ti.com/ v3: Changelog: 1. None Link to v2: https://lore.kernel.org/all/20250823160901.2177841-21-b-padhi@ti.com/ v2: Changelog: 1. Re-ordered patch from [PATCH 03/33] to [PATCH v2 20/33]. Link to v1: https://lore.kernel.org/all/20250814223839.3256046-4-b-padhi@ti.com/ arch/arm64/boot/dts/ti/k3-j721e-sk.dts | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/arch/arm64/boot/dts/ti/k3-j721e-sk.dts b/arch/arm64/boot/dts/ti/k3-j721e-sk.dts index 0f05e65f7bf7..37bc33f2cc26 100644 --- a/arch/arm64/boot/dts/ti/k3-j721e-sk.dts +++ b/arch/arm64/boot/dts/ti/k3-j721e-sk.dts @@ -120,7 +120,8 @@ main_r5fss1_core1_memory_region: memory@a5100000 { no-map; }; - c66_0_dma_memory_region: memory@a6000000 { + /* Carveout locations are flipped due to caching */ + c66_1_dma_memory_region: memory@a6000000 { compatible = "shared-dma-pool"; reg = <0x00 0xa6000000 0x00 0x100000>; no-map; @@ -132,7 +133,8 @@ c66_0_memory_region: memory@a6100000 { no-map; }; - c66_1_dma_memory_region: memory@a7000000 { + /* Carveout locations are flipped due to caching */ + c66_0_dma_memory_region: memory@a7000000 { compatible = "shared-dma-pool"; reg = <0x00 0xa7000000 0x00 0x100000>; no-map; -- 2.34.1