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 alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) (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 824F2D49222 for ; Mon, 18 Nov 2024 13:28:20 +0000 (UTC) Received: from alsa1.perex.cz (alsa1.perex.cz [207.180.221.201]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by alsa0.perex.cz (Postfix) with ESMTPS id 878B2828; Mon, 18 Nov 2024 14:28:07 +0100 (CET) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz 878B2828 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1731936497; bh=j+2aLqPO8jT7pUqSoOdhBzttb3wUlOWGxh1jMETKNlc=; h=From:To:Cc:Subject:In-Reply-To:References:Date:List-Id: List-Archive:List-Help:List-Owner:List-Post:List-Subscribe: List-Unsubscribe:From; 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Mon, 18 Nov 2024 13:27:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1731936443; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=C3aT8RFdCdTNdeyQreq16da7/I4iz4pcsvKIIFnCgCA=; b=TjnKsS73E0DI6Iz1Q01nvGmPESd+7DxF6LViNdUq0cX9Z0fhcRy+zhf1rsWcq79PUow3za RedWyADTe3BipekMwV1ef4XY/nveNr9lfcgJe4eucg+cC4f9nqXU1Al0w+rzpPv1ZlTkL4 HWjP5twPA9CmE/HK7Q7xBEyU4DBsvYCeyZt+WyrLoXwfeDK9DI6KYjnW7Ab8tBOVTaZS3K YNrfEQzODkE3MW1LaAnQM5yksYIAph0J7GYoc5gRUVBOMDwH6TOBPu39VY25t+GtnWI1PU t+GuJMr7+z3Ssm8X8RkzTw6qDTocV4cBUXJ4Bck+T4PF979v2jPhGguDTJplDw== From: Miquel Raynal To: Amit Kumar Mahapatra Cc: , , , , , , , , , , , , , , , , , , , , , , Subject: Re: [RFC PATCH 1/2] dt-bindings: mtd: Add bindings for describing concatinated MTD devices In-Reply-To: <20241026075347.580858-2-amit.kumar-mahapatra@amd.com> (Amit Kumar Mahapatra's message of "Sat, 26 Oct 2024 13:23:46 +0530") References: <20241026075347.580858-1-amit.kumar-mahapatra@amd.com> <20241026075347.580858-2-amit.kumar-mahapatra@amd.com> User-Agent: mu4e 1.12.1; emacs 29.4 Date: Mon, 18 Nov 2024 14:27:21 +0100 Message-ID: <87frnoy8na.fsf@bootlin.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-GND-Sasl: miquel.raynal@bootlin.com Message-ID-Hash: DKVY3ZFP4RLLZQZ3O3OQAOGAEXAZZBWL X-Message-ID-Hash: DKVY3ZFP4RLLZQZ3O3OQAOGAEXAZZBWL X-MailFrom: miquel.raynal@bootlin.com X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-alsa-devel.alsa-project.org-0; header-match-alsa-devel.alsa-project.org-1; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header X-Mailman-Version: 3.3.9 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: On 26/10/2024 at 13:23:46 +0530, Amit Kumar Mahapatra wrote: > 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 th= at > need to be concatenated. > > flash@0 { > compatible =3D "jedec,spi-nor" > ... > partitions { Wrong indentation here and below which makes the example hard to read. > compatible =3D "fixed-partitions"; > concat-partition =3D <&flash0_partition &flash1_p= artition>; > flash0_partition: partition@0 { > label =3D "part0_0"; > reg =3D <0x0 0x800000>; > } > } > } > flash@1 { > compatible =3D "jedec,spi-nor" > ... > partitions { > compatible =3D "fixed-partitions"; > concat-partition =3D <&flash0_partition &flash1_p= artition>; > flash1_partition: partition@0 { > label =3D "part0_1"; > reg =3D <0x0 0x800000>; > } > } > } This approach has a limitation I didn't think about before: you cannot use anything else than fixed partitions as partition parser. > 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@boot= lin.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-parti= tions.yaml b/Documentation/devicetree/bindings/mtd/partitions/fixed-partiti= ons.yaml > index 058253d6d889..df4ccb3dfeba 100644 > --- a/Documentation/devicetree/bindings/mtd/partitions/fixed-partitions.y= aml > +++ b/Documentation/devicetree/bindings/mtd/partitions/fixed-partitions.y= aml > @@ -183,3 +183,21 @@ examples: > read-only; > }; > }; > + > + - | > + partitions { > + compatible =3D "fixed-partitions"; > + #address-cells =3D <1>; > + #size-cells =3D <1>; This is not strictly related but I believe we will soon have issues with these, as we will soon cross the 4GiB boundary. > + concat-parts =3D <&part0 &part1>; > + > + part0: partition@0 { > + label =3D "flash0-part0"; > + reg =3D <0x0000000 0x100000>; > + }; > + > + part1: partition@100000 { > + label =3D "flash1-part0"; > + reg =3D <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] >=20=20 > + concat-parts: > + description: List of MTD partitions phandles that should be concaten= ated. > + $ref: /schemas/types.yaml#/definitions/phandle-array > + minItems: 2 > + maxItems: 4 > + > patternProperties: > "^partition(-.+|@[0-9a-f]+)$": > $ref: partition.yaml Fine by me otherwise. Thanks, Miqu=C3=A8l 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 97A34D49222 for ; Mon, 18 Nov 2024 13:36:16 +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:Message-ID:Date: References:In-Reply-To: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=C3aT8RFdCdTNdeyQreq16da7/I4iz4pcsvKIIFnCgCA=; b=azKJHF8Nx8KgjETgk3FDeA2F8E 6I7dzdO1g36NBLwP+OQy6JfJ1vcLfzHertMM/DP6E7MSRdgFLsg0T5vurTzcoXuL3NYPAiUvUj0jm Xomzv68Acgjfr9tZYjSUUyG5ZmrVjk6jH8tJ1YL78NfXV0SHiqHdW+YzXEaTGmdOQdM5jRCRzRvRV EkgJBYPZrQIsLuyrgtQNSejtOuj8MuIMuIBY87vCkL5htG2bXg4drCrXf7aYwQFXzX2zmk48OhM4J zj+mSyBwi+TjKPfaVkRgRHZcWACNszT4VoAAfx4YL1WeetBnKemCHszTrOsMKD0EaDUWRdnX0OOkq VuXfW73A==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tD1vA-00000009bat-1c8G; Mon, 18 Nov 2024 13:36:04 +0000 Received: from relay3-d.mail.gandi.net ([217.70.183.195]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tD1mo-00000009Zah-1jdb; Mon, 18 Nov 2024 13:27:27 +0000 Received: by mail.gandi.net (Postfix) with ESMTPSA id 491CE6000C; Mon, 18 Nov 2024 13:27:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1731936443; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=C3aT8RFdCdTNdeyQreq16da7/I4iz4pcsvKIIFnCgCA=; b=TjnKsS73E0DI6Iz1Q01nvGmPESd+7DxF6LViNdUq0cX9Z0fhcRy+zhf1rsWcq79PUow3za RedWyADTe3BipekMwV1ef4XY/nveNr9lfcgJe4eucg+cC4f9nqXU1Al0w+rzpPv1ZlTkL4 HWjP5twPA9CmE/HK7Q7xBEyU4DBsvYCeyZt+WyrLoXwfeDK9DI6KYjnW7Ab8tBOVTaZS3K YNrfEQzODkE3MW1LaAnQM5yksYIAph0J7GYoc5gRUVBOMDwH6TOBPu39VY25t+GtnWI1PU t+GuJMr7+z3Ssm8X8RkzTw6qDTocV4cBUXJ4Bck+T4PF979v2jPhGguDTJplDw== From: Miquel Raynal To: Amit Kumar Mahapatra Subject: Re: [RFC PATCH 1/2] dt-bindings: mtd: Add bindings for describing concatinated MTD devices In-Reply-To: <20241026075347.580858-2-amit.kumar-mahapatra@amd.com> (Amit Kumar Mahapatra's message of "Sat, 26 Oct 2024 13:23:46 +0530") References: <20241026075347.580858-1-amit.kumar-mahapatra@amd.com> <20241026075347.580858-2-amit.kumar-mahapatra@amd.com> User-Agent: mu4e 1.12.1; emacs 29.4 Date: Mon, 18 Nov 2024 14:27:21 +0100 Message-ID: <87frnoy8na.fsf@bootlin.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-GND-Sasl: miquel.raynal@bootlin.com X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241118_052726_722137_5DE1A144 X-CRM114-Status: GOOD ( 15.94 ) 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: alexandre.belloni@bootlin.com, vigneshr@ti.com, amitrkcian2002@gmail.com, linux-mtd@lists.infradead.org, claudiu.beznea@tuxon.dev, beanhuo@micron.com, git@amd.com, robh@kernel.org, richard@nod.at, tudor.ambarus@linaro.org, conor+dt@kernel.org, alsa-devel@alsa-project.org, broonie@kernel.org, venkatesh.abbarapu@amd.com, michal.simek@amd.com, linux-arm-kernel@lists.infradead.org, patches@opensource.cirrus.com, linux-kernel@vger.kernel.org, linux-spi@vger.kernel.org, michael@walle.cc, krzk+dt@kernel.org, pratyush@kernel.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 26/10/2024 at 13:23:46 +0530, Amit Kumar Mahapatra wrote: > 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 th= at > need to be concatenated. > > flash@0 { > compatible =3D "jedec,spi-nor" > ... > partitions { Wrong indentation here and below which makes the example hard to read. > compatible =3D "fixed-partitions"; > concat-partition =3D <&flash0_partition &flash1_p= artition>; > flash0_partition: partition@0 { > label =3D "part0_0"; > reg =3D <0x0 0x800000>; > } > } > } > flash@1 { > compatible =3D "jedec,spi-nor" > ... > partitions { > compatible =3D "fixed-partitions"; > concat-partition =3D <&flash0_partition &flash1_p= artition>; > flash1_partition: partition@0 { > label =3D "part0_1"; > reg =3D <0x0 0x800000>; > } > } > } This approach has a limitation I didn't think about before: you cannot use anything else than fixed partitions as partition parser. > 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@boot= lin.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-parti= tions.yaml b/Documentation/devicetree/bindings/mtd/partitions/fixed-partiti= ons.yaml > index 058253d6d889..df4ccb3dfeba 100644 > --- a/Documentation/devicetree/bindings/mtd/partitions/fixed-partitions.y= aml > +++ b/Documentation/devicetree/bindings/mtd/partitions/fixed-partitions.y= aml > @@ -183,3 +183,21 @@ examples: > read-only; > }; > }; > + > + - | > + partitions { > + compatible =3D "fixed-partitions"; > + #address-cells =3D <1>; > + #size-cells =3D <1>; This is not strictly related but I believe we will soon have issues with these, as we will soon cross the 4GiB boundary. > + concat-parts =3D <&part0 &part1>; > + > + part0: partition@0 { > + label =3D "flash0-part0"; > + reg =3D <0x0000000 0x100000>; > + }; > + > + part1: partition@100000 { > + label =3D "flash1-part0"; > + reg =3D <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] >=20=20 > + concat-parts: > + description: List of MTD partitions phandles that should be concaten= ated. > + $ref: /schemas/types.yaml#/definitions/phandle-array > + minItems: 2 > + maxItems: 4 > + > patternProperties: > "^partition(-.+|@[0-9a-f]+)$": > $ref: partition.yaml Fine by me otherwise. Thanks, Miqu=C3=A8l 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 484CCD49223 for ; Mon, 18 Nov 2024 13:36:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-ID:Date:References :In-Reply-To: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=i9JdVD1TfEMmS2khIWRnhRP2Jp06fhvtgM/KorAIW4M=; b=dbF3dKwN6y8EbL 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to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=C3aT8RFdCdTNdeyQreq16da7/I4iz4pcsvKIIFnCgCA=; b=TjnKsS73E0DI6Iz1Q01nvGmPESd+7DxF6LViNdUq0cX9Z0fhcRy+zhf1rsWcq79PUow3za RedWyADTe3BipekMwV1ef4XY/nveNr9lfcgJe4eucg+cC4f9nqXU1Al0w+rzpPv1ZlTkL4 HWjP5twPA9CmE/HK7Q7xBEyU4DBsvYCeyZt+WyrLoXwfeDK9DI6KYjnW7Ab8tBOVTaZS3K YNrfEQzODkE3MW1LaAnQM5yksYIAph0J7GYoc5gRUVBOMDwH6TOBPu39VY25t+GtnWI1PU t+GuJMr7+z3Ssm8X8RkzTw6qDTocV4cBUXJ4Bck+T4PF979v2jPhGguDTJplDw== From: Miquel Raynal To: Amit Kumar Mahapatra Cc: , , , , , , , , , , , , , , , , , , , , , , Subject: Re: [RFC PATCH 1/2] dt-bindings: mtd: Add bindings for describing concatinated MTD devices In-Reply-To: <20241026075347.580858-2-amit.kumar-mahapatra@amd.com> (Amit Kumar Mahapatra's message of "Sat, 26 Oct 2024 13:23:46 +0530") References: <20241026075347.580858-1-amit.kumar-mahapatra@amd.com> <20241026075347.580858-2-amit.kumar-mahapatra@amd.com> User-Agent: mu4e 1.12.1; emacs 29.4 Date: Mon, 18 Nov 2024 14:27:21 +0100 Message-ID: <87frnoy8na.fsf@bootlin.com> MIME-Version: 1.0 X-GND-Sasl: miquel.raynal@bootlin.com X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241118_052726_722137_5DE1A144 X-CRM114-Status: GOOD ( 15.94 ) X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-mtd" Errors-To: linux-mtd-bounces+linux-mtd=archiver.kernel.org@lists.infradead.org T24gMjYvMTAvMjAyNCBhdCAxMzoyMzo0NiArMDUzMCwgQW1pdCBLdW1hciBNYWhhcGF0cmEgPGFt aXQua3VtYXItbWFoYXBhdHJhQGFtZC5jb20+IHdyb3RlOgoKPiBUaGlzIGFwcHJvYWNoIHdhcyBz dWdnZXN0ZWQgYnkgUm9iIFsxXSBkdXJpbmcgYSBkaXNjdXNzaW9uIG9uIE1pcXVlbCdzCj4gaW5p 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