From patchwork Sat Oct 26 07:53:46 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Amit Kumar Mahapatra X-Patchwork-Id: 13852121 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 AC1F0D10BE5 for ; Sat, 26 Oct 2024 07:56:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:Cc: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:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=ZQ3Qol7sNvdQUarJ55LAe5qYBoG5zdUjSAG9cZf/yMg=; b=gC5b+v0g510nPVGIhbjPHkiXJl DoaJrju42UgGCWI+ZchRC41nlFXM3dNcy2tTT7UGeSCbSDDAm4GuludGYNKHnn0UZn4yX4aAWsC1e gupkuczNnYSpA99999U6FhfGyd+xLl5vJVdEsHlXcnSdqnd7JXlqfhpCklKKBReydpDskQ5Ea1Onu vFA5+B+C5McTbO78ZuCietd8yd+RZSLKBxnn4Go9veoMpMkEg4L+NEtXbrdpvMoVjjb3L8H5OHidb bdcEXI9FjTYNKiJ3xV0Qki7dmwdUigg3TeaevLs33fkkU5ahGUK5p7GvxhAejNKnX0CGk7yCiPeL9 KznSpq+g==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1t4beO-00000006Av0-2r8g; Sat, 26 Oct 2024 07:55:56 +0000 Received: from mail-dm6nam11on20605.outbound.protection.outlook.com ([2a01:111:f403:2415::605] helo=NAM11-DM6-obe.outbound.protection.outlook.com) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1t4bco-00000006AkU-2iTr; Sat, 26 Oct 2024 07:54:20 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=lEt3i/Ceh6P6JbgKcJ681iGu1/Ax3mMwkWUN2QJKDMgBoHLk6mkwHtDFOlBNLCDz5GV03SyF9CJEDUzlbSkLkxewzFl596VHog4k9Pzf3Ee52aTJ7f9fjC7RWb8YlhLAO8CuYMQ1LlCWodQ0BVRv0o33VOk7JRnzMxzoouUCBJY3KcvVwOqRfeu+i5QH6ReDD/ikcXGpAEqk49bydruICphhZSyIqKnG6fsEotI5LJqStezUPep+t41lWgPdu0EwzZQ6+KY06yswHjP9hsQDyZ8SNsIsfp7qpOaQVXL5wRVDzJhjRtcKNO3aq1eVFSBxiBPsDr6q8N9VTycgWs4Hsw== 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=ZQ3Qol7sNvdQUarJ55LAe5qYBoG5zdUjSAG9cZf/yMg=; b=gbXJ0W9EGHv8zCT2k9SvYIttMMunEYTk2mpI0Clewvo5msroCDE2BT1eAdaXYeB7Xt5wiV4ShxFXtR+AKd0TVoLrpvWLjK1hDVraBOMT4TeYvbvJSjiZiD8x3Hotr3sVrZ2ldiG7B2odolmM3dLv0imCDUHvHnFYar3bUlZS/bb+wRt0ZKVuDjIaS9T7SoYJUjq2jceP6zLMto3r1v6/gQ1RX7oeb6qUzSbSv7j0lGvBrd18RwNhKyZLQf9OJi+UngugJ9fnS7zNSovDOCZ2B0HtyVdzDtPVJtrz52FGnFbN4C+XR1nkl/gpKZNvhGX3QtQ81KSsc976moTiCDBZ3Q== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 165.204.84.17) smtp.rcpttodomain=linaro.org smtp.mailfrom=amd.com; dmarc=pass (p=quarantine sp=quarantine pct=100) action=none header.from=amd.com; dkim=none (message not signed); arc=none (0) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amd.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=ZQ3Qol7sNvdQUarJ55LAe5qYBoG5zdUjSAG9cZf/yMg=; b=0BTuk/N5I7K1j9YxpUWYqLCRe5nLnU8eLb7JYUoeZQO45w3Pz21eftWo6UIxpoucCyZH28w47aOEm+PKd5H+kfcchahkpQeOamokJmZBtvb1FO27vZJZ6woXnvpPgHBqLT4FKnAPk/tud/xUorHTW4LdVNwRTim2M6yqPpfcY/w= Received: from BL0PR05CA0006.namprd05.prod.outlook.com (2603:10b6:208:91::16) by SN7PR12MB6716.namprd12.prod.outlook.com (2603:10b6:806:270::20) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.8093.20; Sat, 26 Oct 2024 07:54:08 +0000 Received: from BL02EPF0001A0FC.namprd03.prod.outlook.com (2603:10b6:208:91:cafe::a4) by BL0PR05CA0006.outlook.office365.com (2603:10b6:208:91::16) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.8114.8 via Frontend Transport; Sat, 26 Oct 2024 07:54:08 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 165.204.84.17) smtp.mailfrom=amd.com; dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=amd.com; Received-SPF: Pass (protection.outlook.com: domain of amd.com designates 165.204.84.17 as permitted sender) receiver=protection.outlook.com; client-ip=165.204.84.17; helo=SATLEXMB04.amd.com; pr=C Received: from SATLEXMB04.amd.com (165.204.84.17) by BL02EPF0001A0FC.mail.protection.outlook.com (10.167.242.103) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.8093.14 via Frontend Transport; Sat, 26 Oct 2024 07:54:08 +0000 Received: from SATLEXMB03.amd.com (10.181.40.144) by SATLEXMB04.amd.com (10.181.40.145) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.39; Sat, 26 Oct 2024 02:54:06 -0500 Received: from xhdakumarma40.xilinx.com (10.180.168.240) by SATLEXMB03.amd.com (10.181.40.144) with Microsoft SMTP Server id 15.1.2507.39 via Frontend Transport; Sat, 26 Oct 2024 02:54:01 -0500 From: Amit Kumar Mahapatra To: , , , , , , , , , Subject: [RFC PATCH 1/2] dt-bindings: mtd: Add bindings for describing concatinated MTD devices Date: Sat, 26 Oct 2024 13:23:46 +0530 Message-ID: <20241026075347.580858-2-amit.kumar-mahapatra@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20241026075347.580858-1-amit.kumar-mahapatra@amd.com> References: <20241026075347.580858-1-amit.kumar-mahapatra@amd.com> MIME-Version: 1.0 Received-SPF: None (SATLEXMB04.amd.com: amit.kumar-mahapatra@amd.com does not designate permitted sender hosts) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BL02EPF0001A0FC:EE_|SN7PR12MB6716:EE_ X-MS-Office365-Filtering-Correlation-Id: 0e10ef17-2616-4e47-c041-08dcf5935eec X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|36860700013|7416014|1800799024|82310400026|921020; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:165.204.84.17;CTRY:US;LANG:en;SCL:1;SRV:;IPV:CAL;SFV:NSPM;H:SATLEXMB04.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230040)(376014)(36860700013)(7416014)(1800799024)(82310400026)(921020);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 26 Oct 2024 07:54:08.0714 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 0e10ef17-2616-4e47-c041-08dcf5935eec X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: BL02EPF0001A0FC.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SN7PR12MB6716 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241026_005418_715269_07FEC83E X-CRM114-Status: GOOD ( 10.52 ) 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: git@amd.com, alexandre.belloni@bootlin.com, Amit Kumar Mahapatra , alsa-devel@alsa-project.org, patches@opensource.cirrus.com, amitrkcian2002@gmail.com, linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org, venkatesh.abbarapu@amd.com, claudiu.beznea@tuxon.dev, linux-spi@vger.kernel.org, michal.simek@amd.com, linux-arm-kernel@lists.infradead.org, beanhuo@micron.com Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org This approach was suggested by Rob [1] during a discussion on Miquel's initial approach [2] to extend the MTD-CONCAT driver to support stacked memories. Define each flash node separately with its respective partitions, and add a 'concat-parts' binding to link the partitions of the two flash nodes that need to be concatenated. flash@0 { compatible = "jedec,spi-nor" ... partitions { compatible = "fixed-partitions"; concat-partition = <&flash0_partition &flash1_partition>; flash0_partition: partition@0 { label = "part0_0"; reg = <0x0 0x800000>; } } } flash@1 { compatible = "jedec,spi-nor" ... partitions { compatible = "fixed-partitions"; concat-partition = <&flash0_partition &flash1_partition>; flash1_partition: partition@0 { label = "part0_1"; reg = <0x0 0x800000>; } } } Based on the bindings the MTD-CONCAT driver need to be updated to create virtual mtd-concat devices. [1] https://lore.kernel.org/all/20191118221341.GA30937@bogus/ [2] https://lore.kernel.org/all/20191113171505.26128-4-miquel.raynal@bootlin.com/ Signed-off-by: Amit Kumar Mahapatra --- .../mtd/partitions/fixed-partitions.yaml | 18 ++++++++++++++++++ .../bindings/mtd/partitions/partitions.yaml | 6 ++++++ 2 files changed, 24 insertions(+) diff --git a/Documentation/devicetree/bindings/mtd/partitions/fixed-partitions.yaml b/Documentation/devicetree/bindings/mtd/partitions/fixed-partitions.yaml index 058253d6d889..df4ccb3dfeba 100644 --- a/Documentation/devicetree/bindings/mtd/partitions/fixed-partitions.yaml +++ b/Documentation/devicetree/bindings/mtd/partitions/fixed-partitions.yaml @@ -183,3 +183,21 @@ examples: read-only; }; }; + + - | + partitions { + compatible = "fixed-partitions"; + #address-cells = <1>; + #size-cells = <1>; + concat-parts = <&part0 &part1>; + + part0: partition@0 { + label = "flash0-part0"; + reg = <0x0000000 0x100000>; + }; + + part1: partition@100000 { + label = "flash1-part0"; + reg = <0x0100000 0x200000>; + }; + }; diff --git a/Documentation/devicetree/bindings/mtd/partitions/partitions.yaml b/Documentation/devicetree/bindings/mtd/partitions/partitions.yaml index 1dda2c80747b..86bbd83c3f6d 100644 --- a/Documentation/devicetree/bindings/mtd/partitions/partitions.yaml +++ b/Documentation/devicetree/bindings/mtd/partitions/partitions.yaml @@ -32,6 +32,12 @@ properties: '#size-cells': enum: [1, 2] + concat-parts: + description: List of MTD partitions phandles that should be concatenated. + $ref: /schemas/types.yaml#/definitions/phandle-array + minItems: 2 + maxItems: 4 + patternProperties: "^partition(-.+|@[0-9a-f]+)$": $ref: partition.yaml From patchwork Sat Oct 26 07:53:47 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Amit Kumar Mahapatra X-Patchwork-Id: 13852130 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 8090FD10BE5 for ; Sat, 26 Oct 2024 07:59:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id: Content-Transfer-Encoding:Content-Type:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=owYK/6+V3VUTla7EukrIdWHtCfgdNgNjjMHBG3WW1+E=; b=XyfAlvK6mD9v/b KMoxCVbbXGxQvlceS8roVdTMwpAM8hsYX87iQ4rPU4vf0w0rfrJLUbV19JBjcv/AdUb6tFTIMhl3C AD/DnDywDyvi/Dv/tg/Ev9Y/Ib31pRe9zjc4dA9FAE1WXKKZrarQWFk2OCeHBS4icl/rgYR8eIehD RKTNIZ3zQLYt2ITX9Y5CQ3fH92Va9sKhBxR4dRbe7lAkKg+vDBaIZkRx/yb+f+oiZf4ooecO0PmAJ v9Zd7oxEw7iiptpw/z9AWs8XlKnS5yplv1ctTD9Zwmx2xFw2LYo6h2bfDw05aZi9vH+ezaBu49Jvr /IB30D2PvjaOikQvAQnA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1t4bhW-00000006BKU-0ngZ; Sat, 26 Oct 2024 07:59:10 +0000 Received: from mail-dm6nam11on20604.outbound.protection.outlook.com ([2a01:111:f403:2415::604] helo=NAM11-DM6-obe.outbound.protection.outlook.com) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1t4bcq-00000006AlK-1DmX; Sat, 26 Oct 2024 07:54:22 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=oGa5b1Tb8Ec5UNVg69VQ45wWus7I5LoKduuRd69tEP4co/3bbduMxHBcb2YG2I1XQPa4jUi4vf9/0qE6AHYyaih0ULAhJBDrc5qOU0SXee8UTum4nT4iuQAGVaXmaaMrqI5yXSd0bVJn0lph1NQyJA6dNweyvCWngI0QrQzSsfVuqYq7GKvvwq3l1N2aA+4VORUzjorL2NSIBnZnh3tSYP5OGPKnsuA/qeUvvOyKWoKhBhYNXhcKL6PE8tqK/bhqAZHF6dbwuhHmMSKCR/P0Gea1tzI4Z2LcHa2p1OhmFgCwq6fvrJMLysbHn1o8GtI496jTvkDdyVwSP8zh9LZAIA== 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=owYK/6+V3VUTla7EukrIdWHtCfgdNgNjjMHBG3WW1+E=; b=pfrBohqvElexBbyvO1ocJxVuwo1n+ZZTPolgfZAcGKWsaElV4d4T+UTFFyRppq45DiUPF+yp09CnMGQvPDIacubwJu242Sq2/eTAA+64cu+gX+flPcodXvl1d/Z8Z7nSWPuuCgb2IGR8lL2+7uxdL6n4TrWvQOVbuaj+/WY2DVsOJmuDpS2HbVmFAzhOoYrVwlr9nYk+zC/JZPeuQcsc6JzxGyAmjHwBNHL2FgvZ16e9JoJZCLeKyS8qJ0LD0MTFIBADwalnnyOh8c+9BsxImSWu5xg4hiQqIF7eQ2sk8jFvlgn/Vgu4u2y076hlvPt5PmJ7uID2/vWTykMdm1fdBA== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 165.204.84.17) smtp.rcpttodomain=linaro.org smtp.mailfrom=amd.com; dmarc=pass (p=quarantine sp=quarantine pct=100) action=none header.from=amd.com; dkim=none (message not signed); arc=none (0) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amd.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=owYK/6+V3VUTla7EukrIdWHtCfgdNgNjjMHBG3WW1+E=; b=tLYoDJejm9yXd5otWASOIRpGzV3hVu555/6sqnMvbYMADckGUMc7EUeOfQV6SyZK7NmiA9OdrPaRA9UF6IZqrOZKwFZfQNMvL9moeRo9fADP8bi4MYe7wxB2qMEYDqt5EEaB7UAb6OZOQyURz3i8H0R8GiHv4MDIrm8jow/4V9A= Received: from BN9P221CA0012.NAMP221.PROD.OUTLOOK.COM (2603:10b6:408:10a::7) by PH7PR12MB5733.namprd12.prod.outlook.com (2603:10b6:510:1e0::22) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.8093.23; Sat, 26 Oct 2024 07:54:14 +0000 Received: from BL02EPF0001A0FF.namprd03.prod.outlook.com (2603:10b6:408:10a:cafe::7b) by BN9P221CA0012.outlook.office365.com (2603:10b6:408:10a::7) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.8093.23 via Frontend Transport; Sat, 26 Oct 2024 07:54:14 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 165.204.84.17) smtp.mailfrom=amd.com; dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=amd.com; Received-SPF: Pass (protection.outlook.com: domain of amd.com designates 165.204.84.17 as permitted sender) receiver=protection.outlook.com; client-ip=165.204.84.17; helo=SATLEXMB04.amd.com; pr=C Received: from SATLEXMB04.amd.com (165.204.84.17) by BL02EPF0001A0FF.mail.protection.outlook.com (10.167.242.106) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.8093.14 via Frontend Transport; Sat, 26 Oct 2024 07:54:14 +0000 Received: from SATLEXMB03.amd.com (10.181.40.144) by SATLEXMB04.amd.com (10.181.40.145) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.39; Sat, 26 Oct 2024 02:54:12 -0500 Received: from xhdakumarma40.xilinx.com (10.180.168.240) by SATLEXMB03.amd.com (10.181.40.144) with Microsoft SMTP Server id 15.1.2507.39 via Frontend Transport; Sat, 26 Oct 2024 02:54:07 -0500 From: Amit Kumar Mahapatra To: , , , , , , , , , Subject: [RFC PATCH 2/2] dt-bindings: spi: Update stacked and parallel bindings Date: Sat, 26 Oct 2024 13:23:47 +0530 Message-ID: <20241026075347.580858-3-amit.kumar-mahapatra@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20241026075347.580858-1-amit.kumar-mahapatra@amd.com> References: <20241026075347.580858-1-amit.kumar-mahapatra@amd.com> MIME-Version: 1.0 Received-SPF: None (SATLEXMB04.amd.com: amit.kumar-mahapatra@amd.com does not designate permitted sender hosts) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BL02EPF0001A0FF:EE_|PH7PR12MB5733:EE_ X-MS-Office365-Filtering-Correlation-Id: 7da072c1-1097-459b-0c34-08dcf5936289 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|36860700013|82310400026|1800799024|7416014|376014|921020; X-Microsoft-Antispam-Message-Info: =?utf-8?q?70f0PeR+KzU9X+yQlgl8lP482ROUWE2?= =?utf-8?q?ObxCkMO2S7Uckm7SySdg2xQLglne9vwpUMcLqElF6ILlFwsCB05sah7d91W9XzYjv?= =?utf-8?q?vsF8U/iuRAQpmBSnHd49aJpKYyPjdsjTCDgdMYOKGscUmPTPuid6szi0r9VK/7oMW?= =?utf-8?q?QiLA2pfQWRcgH2sy6DQ84DiF/z2nJT1W4S9RUmHG296s//WRutISEmvuKiHuIIOAk?= =?utf-8?q?zmm43EVaugBYHNSTEbHWTqdcvAzhaF6B/RO3PJSoUlgKVPY+MBfhSWmDtkMyUo2YW?= =?utf-8?q?jSGhrDipGwbxt+KGc/d8hZmw+0I5Kgl/i7Lmk4Bj76g44Pmu1S2lgInxapkldRszQ?= =?utf-8?q?2LMB6Z8gp+g5A8AjDpuk/c98YvbzT0/ylo4omXdkwkEEjd0YCZDo5leukRVkrMFPP?= =?utf-8?q?jV64bAXJvTi8llDNxO0Dkf1uoUtCge0BS45xxc5Q5XrmiZEEfhj4NmHpI6jiKxEp1?= =?utf-8?q?lD2etCfoIg+crebJBlmon096dNn5Zn9RHzwtRUIjBaJQhRjYsN6bq56rPhfp9Locd?= =?utf-8?q?4UdVTU18PviTPdKFA6CQWJvbvKlqtbzLmWfCQt0P/UZ6bbUkgmoaG3WnfdL2hugI9?= =?utf-8?q?bkMTEXj/EOXRFppB74CvoOvvsDJ1oiyP/wfy85qAn8pOfKjhvvwLCtxBfY97Cae50?= =?utf-8?q?C6Tk4xJXZlgkLE/bT2EOJToJ+ADZH5x8ZGpCysOksf2TA3cvxdM7kE7OZJyLaIYPs?= =?utf-8?q?X7wMuDgcQrOrK/zJSwEQoz8uq2Yi0ga+U9wAcP7MtNX++Itt/w+Uwl4eQeiy7GUdj?= =?utf-8?q?cjFCvKD5DjnCdpBQaJQmEhkTRjElozpQ7RLm1+ySLWJqHki9HlCaEx3AQ3rM2w0qt?= =?utf-8?q?71Qp+BaJVTIjLn8QGHNf/VKiSIOzxXbNWsB4f73NGjOI2kCto9D7SLgHmXdnV2E6O?= =?utf-8?q?aXBxYuQsBS5whmmp2j/jhjltjjgLJ3jGMeCNnkBaAy1NT9BOhxGfkqtz71GOQ9+sG?= =?utf-8?q?87dNvY+gdl+hUIMtucyU+rv/kYNJCwMJizn4ENHvGMOjy950dJ/1XENxt0P3DuLuk?= =?utf-8?q?WEJC4rr0ljHNTq9Bcho6Vb1Oq8dtG3mltM14JlN6NeQ0GFNTnDQUCuTGtp0qGaYd9?= =?utf-8?q?+EO0KNrXWWMpovbxhtSawP6MG4r9fZpcFTWO47hRBQnHXKBCed9QIMtBCfkWYHmWr?= =?utf-8?q?Cnty8w60VRPWLw1zVKoDAbw8OTPMLIc73JfwwDw6ZEI2zKLfO9KPBb37dSMT4W8m6?= =?utf-8?q?UjADvLDn9zgR71BgeQ7flBt1vIn43xW/RSXB5jf1Z1Dh3Y/OyIHrl0MKGPf+nlHmb?= =?utf-8?q?ZPK1s5W0Rf+6IpJW0tECgWkkbynRBkwilI6Ct9iiAnXoZlGCm+YGkiT7QOsz11OYc?= =?utf-8?q?JjZIsXHqTmfOkUoH5CQFe9KVPzQ5k6/hmdfn0L89djN5PAV9WO4hsQ4=3D?= X-Forefront-Antispam-Report: CIP:165.204.84.17;CTRY:US;LANG:en;SCL:1;SRV:;IPV:CAL;SFV:NSPM;H:SATLEXMB04.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230040)(36860700013)(82310400026)(1800799024)(7416014)(376014)(921020);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 26 Oct 2024 07:54:14.1289 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 7da072c1-1097-459b-0c34-08dcf5936289 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: BL02EPF0001A0FF.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH7PR12MB5733 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241026_005420_416501_A410DD9D X-CRM114-Status: GOOD ( 17.07 ) 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: git@amd.com, alexandre.belloni@bootlin.com, Amit Kumar Mahapatra , alsa-devel@alsa-project.org, patches@opensource.cirrus.com, amitrkcian2002@gmail.com, linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org, venkatesh.abbarapu@amd.com, claudiu.beznea@tuxon.dev, linux-spi@vger.kernel.org, michal.simek@amd.com, linux-arm-kernel@lists.infradead.org, beanhuo@micron.com Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org For implementing the proposed solution the current 'stacked-memories' & 'parallel-memories' bindings need to be updated as follow. stacked-memories binding changes: - Each flash will have its own flash node. This approach allows flashes of different makes and sizes to be stacked together, as each flash will be probed individually. - Each of the flash node will have its own “reg” property that will contain its physical CS. - Remove the size information from the bindings as it can be retrived drirectly from the flash. - The stacked-memories DT bindings will contain the phandles of the flash nodes connected in stacked mode. The new layer will update the mtd->size and other mtd_info parameters after both the flashes are probed and will call mtd_device_register with the combined information. spi@0 { ... flash@0 { compatible = "jedec,spi-nor" reg = <0x00>; stacked-memories = <&flash@0 &flash@1>; spi-max-frequency = <50000000>; ... partitions { compatible = "fixed-partitions"; concat-partition = <&flash0_partition &flash1_partition>; flash0_partition: partition@0 { label = "part0_0"; reg = <0x0 0x800000>; } } } flash@1 { compatible = "jedec,spi-nor" reg = <0x01>; stacked-memories = <&flash@0 &flash@1>; spi-max-frequency = <50000000>; ... partitions { compatible = "fixed-partitions"; concat-partition = <&flash0_partition &flash1_partition>; flash1_partition: partition@0 { label = "part0_1"; reg = <0x0 0x800000>; } } } } parallel-memories binding changes: - Remove the size information from the bindings and change the type to boolen. - Each flash connected in parallel mode should be identical and will have one flash node for both the flash devices. - The “reg” prop will contain the physical CS number for both the connected flashes. The new layer will double the mtd-> size and register it with the mtd layer. spi@1 { ... flash@3 { compatible = "jedec,spi-nor" reg = <0x00 0x01>; paralle-memories ; spi-max-frequency = <50000000>; ... partitions { compatible = "fixed-partitions"; flash0_partition: partition@0 { label = "part0_0"; reg = <0x0 0x800000>; } } } } Signed-off-by: Amit Kumar Mahapatra --- .../bindings/spi/spi-controller.yaml | 23 +++++++++++++++++-- .../bindings/spi/spi-peripheral-props.yaml | 9 +++----- 2 files changed, 24 insertions(+), 8 deletions(-) diff --git a/Documentation/devicetree/bindings/spi/spi-controller.yaml b/Documentation/devicetree/bindings/spi/spi-controller.yaml index 093150c0cb87..2d300f98dd72 100644 --- a/Documentation/devicetree/bindings/spi/spi-controller.yaml +++ b/Documentation/devicetree/bindings/spi/spi-controller.yaml @@ -185,7 +185,26 @@ examples: flash@2 { compatible = "jedec,spi-nor"; spi-max-frequency = <50000000>; - reg = <2>, <3>; - stacked-memories = /bits/ 64 <0x10000000 0x10000000>; + reg = <2>; + stacked-memories = <&flash0 &flash1>; }; + }; + + - | + spi@90010000 { + #address-cells = <1>; + #size-cells = <0>; + compatible = "fsl,imx28-spi"; + reg = <0x90010000 0x2000>; + interrupts = <96>; + dmas = <&dma_apbh 0>; + dma-names = "rx-tx"; + + flash@0 { + compatible = "jedec,spi-nor"; + spi-max-frequency = <50000000>; + reg = <0>, <1>; + parallel-memories; + }; + }; diff --git a/Documentation/devicetree/bindings/spi/spi-peripheral-props.yaml b/Documentation/devicetree/bindings/spi/spi-peripheral-props.yaml index 15938f81fdce..2a014160d701 100644 --- a/Documentation/devicetree/bindings/spi/spi-peripheral-props.yaml +++ b/Documentation/devicetree/bindings/spi/spi-peripheral-props.yaml @@ -96,7 +96,7 @@ properties: space with only a single additional wire, while still needing to repeat the commands when crossing a chip boundary. The size of each chip should be provided as members of the array. - $ref: /schemas/types.yaml#/definitions/uint64-array + $ref: /schemas/types.yaml#/definitions/phandle-array minItems: 2 maxItems: 4 @@ -107,11 +107,8 @@ properties: different memories (eg. even bits are stored in one memory, odd bits in the other). This basically doubles the address space and the throughput while greatly complexifying the wiring because as - many busses as devices must be wired. The size of each chip should - be provided as members of the array. - $ref: /schemas/types.yaml#/definitions/uint64-array - minItems: 2 - maxItems: 4 + many busses as devices must be wired. + $ref: /schemas/types.yaml#/definitions/flag st,spi-midi-ns: description: |