From nobody Tue Feb 10 16:18:20 2026 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 277C1224893; Wed, 26 Feb 2025 17:01:47 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1740589308; cv=none; b=p1ghX0R0xgmIGIiOLM/MWnVl7fhh3HeRTVj7GY9qUqs6d1rj2cq5JfmBDKhsEqmyUIbHRQCA5X3GMf5vub4siJd6diMUIpcBAdf0pEJK5sfiytY1Pem9LMfTsJxdi8pZBik3A/Wvizoymflp5ECnSA8yn3b14PkSddskDohVOgc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1740589308; c=relaxed/simple; bh=mR8X2x+4upIZjxcvX9fZdAr30Xa5cx+18eEK9yFm0bk=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=a/RxyJrZgh4zBiCy/ckHitFxsLDzdoYxjIlIY9sW6zja9zCjS+/NfzuOAhY4qXIGHsUvnXLDHhNmdlX4827BdtkAo1Y3yWQ/jqF8bY+CeAYF/9Chl6Rfnz4eG108CF6gmxhJB18UyKtFyiTbXfVr9urCds1qAUn/VoE7xtEYvzs= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=IzK+yIvj; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="IzK+yIvj" Received: by smtp.kernel.org (Postfix) with ESMTPS id AE6ECC4CEE9; Wed, 26 Feb 2025 17:01:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1740589307; bh=mR8X2x+4upIZjxcvX9fZdAr30Xa5cx+18eEK9yFm0bk=; h=From:Date:Subject:References:In-Reply-To:To:Cc:Reply-To:From; b=IzK+yIvjtGcpCAWuhQPuFuWYDw3PRuP/iopY5U/F91CkdhnH563bOWE6iKnAXkWBu u0Adw8tGsxCHpQcFaG+XePcavBbxZRWD/zQohOnm6luTDE/iXjwGzHthoTWeB78sz9 eEjT7ETFLsxo+zqR+CGyQCrF+1C5ii+UGNP6WJawz4iFlo3jR7TOsNQBbr4drAS1SE hULTyaRyDEyj1yQrmzfYJErPCtiIg/zBo/UcUh4beAr4v4McIid2ODZlnY4Fa8aObv 6HWFa36OGGNPM4Zykpab8b+TICi2RFa4g/eKTcJKfVmRcX5v08XqWSsKUYe3suR3dQ ffWRnEmFq1h7Q== Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9DFD0C19F38; Wed, 26 Feb 2025 17:01:47 +0000 (UTC) From: =?utf-8?q?J=2E_Neusch=C3=A4fer_via_B4_Relay?= Date: Wed, 26 Feb 2025 18:01:41 +0100 Subject: [PATCH v3 2/3] dt-bindings: nand: Add fsl,elbc-fcm-nand Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20250226-ppcyaml-elbc-v3-2-a90ed71da838@posteo.net> References: <20250226-ppcyaml-elbc-v3-0-a90ed71da838@posteo.net> In-Reply-To: <20250226-ppcyaml-elbc-v3-0-a90ed71da838@posteo.net> To: Krzysztof Kozlowski , Rob Herring , Conor Dooley , Miquel Raynal , Richard Weinberger , Vignesh Raghavendra , Krzysztof Kozlowski , Crystal Wood , Madhavan Srinivasan , Michael Ellerman , Nicholas Piggin , Christophe Leroy , Naveen N Rao Cc: linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-mtd@lists.infradead.org, linuxppc-dev@lists.ozlabs.org, =?utf-8?q?J=2E_Neusch=C3=A4fer?= , Frank Li X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1740589304; l=3338; i=j.ne@posteo.net; s=20240329; h=from:subject:message-id; bh=CdXw6dR5bMVKNz3tQ2ZajhBrMGlazf+TPLV0IfPcsxQ=; b=ou0k0jl7pEz6u2l1Bp+HZXK2i2t4d4INlycakDeN/WIBbhWASIzDsh/9ARllj6+TJrAUIobNt PBZYX405vpjBssaH+g2YrR27om7vZv3GVW9RzROoCOA95mWOs191kqO X-Developer-Key: i=j.ne@posteo.net; a=ed25519; pk=NIe0bK42wNaX/C4bi6ezm7NJK0IQE+8MKBm7igFMIS4= X-Endpoint-Received: by B4 Relay for j.ne@posteo.net/20240329 with auth_id=156 X-Original-From: =?utf-8?q?J=2E_Neusch=C3=A4fer?= Reply-To: j.ne@posteo.net From: "J. Neusch=C3=A4fer" Formalize the binding already supported by the fsl_elbc_nand.c driver and used in several device trees in arch/powerpc/boot/dts/. raw-nand-chip.yaml is referenced in order to accommodate situations in which the ECC parameters settings are set in the device tree. One such example is in arch/powerpc/boot/dts/turris1x.dts: /* MT29F2G08ABAEAWP:E NAND */ nand@1,0 { compatible =3D "fsl,p2020-fcm-nand", "fsl,elbc-fcm-nand"; reg =3D <0x1 0x0 0x00040000>; nand-ecc-mode =3D "soft"; nand-ecc-algo =3D "bch"; partitions { ... }; }; Reviewed-by: Frank Li Signed-off-by: J. Neusch=C3=A4fer --- V3: - remove unnecessary #address/size-cells from nand node in example - add Frank Li's review tag - add missing end of document marker (...) - explain choice to reference raw-nand-chip.yaml V2: - split out from fsl,elbc binding patch - constrain #address-cells and #size-cells - add a general description - use unevaluatedProperties=3Dfalse instead of additionalProperties=3Dfalse - fix property order to comply with dts coding style - include raw-nand-chip.yaml instead of nand-chip.yaml --- .../devicetree/bindings/mtd/fsl,elbc-fcm-nand.yaml | 68 ++++++++++++++++++= ++++ 1 file changed, 68 insertions(+) diff --git a/Documentation/devicetree/bindings/mtd/fsl,elbc-fcm-nand.yaml b= /Documentation/devicetree/bindings/mtd/fsl,elbc-fcm-nand.yaml new file mode 100644 index 0000000000000000000000000000000000000000..91e8f2f9ff26da0f5a3f9bf2769= 55ed32e9e7bc6 --- /dev/null +++ b/Documentation/devicetree/bindings/mtd/fsl,elbc-fcm-nand.yaml @@ -0,0 +1,68 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/mtd/fsl,elbc-fcm-nand.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: NAND flash attached to Freescale eLBC + +description: + The Freescale Enhanced Local Bus controller (eLBC) contains logic to + interface with NAND flash, called the NAND Flash Control Machine (FCM). + This binding describes flash attached to an eLBC using the FCM. + +maintainers: + - J. Neusch=C3=A4fer + +allOf: + - $ref: raw-nand-chip.yaml# + +properties: + compatible: + oneOf: + - items: + - enum: + - fsl,mpc8313-fcm-nand + - fsl,mpc8315-fcm-nand + - fsl,mpc8377-fcm-nand + - fsl,mpc8378-fcm-nand + - fsl,mpc8379-fcm-nand + - fsl,mpc8536-fcm-nand + - fsl,mpc8569-fcm-nand + - fsl,mpc8572-fcm-nand + - fsl,p1020-fcm-nand + - fsl,p1021-fcm-nand + - fsl,p1025-fcm-nand + - fsl,p2020-fcm-nand + - const: fsl,elbc-fcm-nand + - const: fsl,elbc-fcm-nand + + reg: + maxItems: 1 + + "#address-cells": + const: 1 + + "#size-cells": + const: 1 + +required: + - compatible + - reg + +unevaluatedProperties: false + +examples: + - | + localbus { + #address-cells =3D <2>; + #size-cells =3D <1>; + + nand@1,0 { + compatible =3D "fsl,mpc8315-fcm-nand", + "fsl,elbc-fcm-nand"; + reg =3D <0x1 0x0 0x2000>; + }; + }; + +... --=20 2.48.0.rc1.219.gb6b6757d772