From nobody Thu Dec 18 07:35:18 2025 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 ACB891F5425; Thu, 13 Mar 2025 21:35:47 +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=1741901747; cv=none; b=P7ZTOdel1Z0Y55OdgeLM8+DgQyrZU1mPZxfoH5U8/7s0HGIPGzrge53fhEq35TEZfUN+UmTal9d8+kHEvMk8lpAbkpn2q4dlrJn1Rtg56uDcYj9YzVk6xZbbgQCc/y/DcXT+2tG3CGOy/QvqDuSYqa/g0vJ87csweck00ZLoNwI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741901747; c=relaxed/simple; bh=N9vjOO0ppP0Y2mdFuJUbpBLs8pEFcObKLSdjXsIWfMw=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=HipdC9XBpe0WdxiVvI/b37JvU7HA2Sy3J73lFsc+J2BsdDiDByGSK9iMaoc8EdZbf9bvsVqeIflGUF7qDWEx2eK7yWb0skTTXawKYy7h6MbCa4lwfrFnlxoR8B/mfJzPt9lJuWyrJEL3DAfisaERIzQDF+zuaTaH0dvk12IqVOA= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=noqCH8N/; 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="noqCH8N/" Received: by smtp.kernel.org (Postfix) with ESMTPS id 5E616C4CEEF; Thu, 13 Mar 2025 21:35:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1741901747; bh=N9vjOO0ppP0Y2mdFuJUbpBLs8pEFcObKLSdjXsIWfMw=; h=From:Date:Subject:References:In-Reply-To:To:Cc:Reply-To:From; b=noqCH8N/bx1mUQjnBXRnaVuZD5iVgUmz18QmQBioCf0PHuKzYJbUN/DQLnWTuog2o IbJfpCmRc645H/03pMaAkz2xHre1ZFt6pO9cXfeZ1ww5NgD9wFTR9Z1CExr01aNGJA +e60svISAgYKnyNrt62iDXDo8zaMxb8+wX9AZkWvvFCLuav8zStJC7Halx+T7pOUU4 l3QeSeyPcpAsCC5KV8ruauvO3rUTmVzQogUyVkQRYvsSueXCSzVZdOF0M7+yre8KFd DIJV3RmHnI/CsfSTXQsMg5C+i2jhvWTlDj+Gu68C9iuoHoUBzXn9CGg0LiWaF2ixMv NBCWU5O+8raIA== 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 4CE7DC35FF3; Thu, 13 Mar 2025 21:35:47 +0000 (UTC) From: =?utf-8?q?J=2E_Neusch=C3=A4fer_via_B4_Relay?= Date: Thu, 13 Mar 2025 22:35:46 +0100 Subject: [PATCH v4 3/4] 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: <20250313-ppcyaml-elbc-v4-3-55903722d9ea@posteo.net> References: <20250313-ppcyaml-elbc-v4-0-55903722d9ea@posteo.net> In-Reply-To: <20250313-ppcyaml-elbc-v4-0-55903722d9ea@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: Frank Li , 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?= X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1741901745; l=3359; i=j.ne@posteo.net; s=20240329; h=from:subject:message-id; bh=/umUf9hJGqJZQnH4lp0VYOs75H+hiudpQPeFtynlqq0=; b=rut2FT9YxXNoUww0z5Ik0lSdReicEKdzbFg0FYIlmovOGHWwcVanj66uf0QrEhrZv+Z7u1jeu 6hjm8X+fciVCNioGM8E33XDtOLxgnpaaWy/0lbuwKT8QtBAFfcftpKY 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 Reviewed-by: Rob Herring (Arm) --- V4: - no changes 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