From: Michael Walle <michael@walle.cc> To: linux-mtd@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Cc: "Miquel Raynal" <miquel.raynal@bootlin.com>, "Richard Weinberger" <richard@nod.at>, "Vignesh Raghavendra" <vigneshr@ti.com>, "Rob Herring" <robh+dt@kernel.org>, "Srinivas Kandagatla" <srinivas.kandagatla@linaro.org>, "Rafał Miłecki" <rafal@milecki.pl>, "Michael Walle" <michael@walle.cc> Subject: [RFC PATCH 3/4] dt-bindings: mtd: add OTP bindings Date: Mon, 22 Mar 2021 19:19:48 +0100 [thread overview] Message-ID: <20210322181949.2805-4-michael@walle.cc> (raw) In-Reply-To: <20210322181949.2805-1-michael@walle.cc> Flash devices can have one-time-programmable regions. Add a nvmem binding so they can be used as a nvmem provider. Signed-off-by: Michael Walle <michael@walle.cc> --- .../devicetree/bindings/mtd/mtd.yaml | 71 +++++++++++++++++++ 1 file changed, 71 insertions(+) diff --git a/Documentation/devicetree/bindings/mtd/mtd.yaml b/Documentation/devicetree/bindings/mtd/mtd.yaml index 321259aab0f6..2b852f91a6a9 100644 --- a/Documentation/devicetree/bindings/mtd/mtd.yaml +++ b/Documentation/devicetree/bindings/mtd/mtd.yaml @@ -21,6 +21,25 @@ properties: based name) in order to ease flash device identification and/or describe what they are used for. +patternProperties: + "^otp(-[0-9]+)?": + type: object + $ref: ../nvmem/nvmem.yaml# + + description: | + An OTP memory region. Some flashes provide a one-time-programmable + memory whose content can either be programmed by a user or is already + pre-programmed by the factory. Some flashes might provide both. + + properties: + compatible: + enum: + - mtd-user-otp + - mtd-factory-otp + + required: + - compatible + additionalProperties: true examples: @@ -36,4 +55,56 @@ examples: }; }; + - | + spi { + #address-cells = <1>; + #size-cells = <0>; + + flash@0 { + reg = <0>; + compatible = "some,flash"; + + otp { + compatible = "mtd-user-otp"; + #address-cells = <1>; + #size-cells = <1>; + + serial-number@0 { + reg = <0 16>; + }; + }; + }; + }; + + - | + spi { + #address-cells = <1>; + #size-cells = <0>; + + flash@0 { + reg = <0>; + compatible = "some,flash"; + + otp-1 { + compatible = "mtd-factory-otp"; + #address-cells = <1>; + #size-cells = <1>; + + electronic-serial-number@0 { + reg = <0 8>; + }; + }; + + otp-2 { + compatible = "mtd-user-otp"; + #address-cells = <1>; + #size-cells = <1>; + + mac-address@0 { + reg = <0 6>; + }; + }; + }; + }; + ... -- 2.20.1
WARNING: multiple messages have this Message-ID (diff)
From: Michael Walle <michael@walle.cc> To: linux-mtd@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Cc: "Miquel Raynal" <miquel.raynal@bootlin.com>, "Richard Weinberger" <richard@nod.at>, "Vignesh Raghavendra" <vigneshr@ti.com>, "Rob Herring" <robh+dt@kernel.org>, "Srinivas Kandagatla" <srinivas.kandagatla@linaro.org>, "Rafał Miłecki" <rafal@milecki.pl>, "Michael Walle" <michael@walle.cc> Subject: [RFC PATCH 3/4] dt-bindings: mtd: add OTP bindings Date: Mon, 22 Mar 2021 19:19:48 +0100 [thread overview] Message-ID: <20210322181949.2805-4-michael@walle.cc> (raw) In-Reply-To: <20210322181949.2805-1-michael@walle.cc> Flash devices can have one-time-programmable regions. Add a nvmem binding so they can be used as a nvmem provider. Signed-off-by: Michael Walle <michael@walle.cc> --- .../devicetree/bindings/mtd/mtd.yaml | 71 +++++++++++++++++++ 1 file changed, 71 insertions(+) diff --git a/Documentation/devicetree/bindings/mtd/mtd.yaml b/Documentation/devicetree/bindings/mtd/mtd.yaml index 321259aab0f6..2b852f91a6a9 100644 --- a/Documentation/devicetree/bindings/mtd/mtd.yaml +++ b/Documentation/devicetree/bindings/mtd/mtd.yaml @@ -21,6 +21,25 @@ properties: based name) in order to ease flash device identification and/or describe what they are used for. +patternProperties: + "^otp(-[0-9]+)?": + type: object + $ref: ../nvmem/nvmem.yaml# + + description: | + An OTP memory region. Some flashes provide a one-time-programmable + memory whose content can either be programmed by a user or is already + pre-programmed by the factory. Some flashes might provide both. + + properties: + compatible: + enum: + - mtd-user-otp + - mtd-factory-otp + + required: + - compatible + additionalProperties: true examples: @@ -36,4 +55,56 @@ examples: }; }; + - | + spi { + #address-cells = <1>; + #size-cells = <0>; + + flash@0 { + reg = <0>; + compatible = "some,flash"; + + otp { + compatible = "mtd-user-otp"; + #address-cells = <1>; + #size-cells = <1>; + + serial-number@0 { + reg = <0 16>; + }; + }; + }; + }; + + - | + spi { + #address-cells = <1>; + #size-cells = <0>; + + flash@0 { + reg = <0>; + compatible = "some,flash"; + + otp-1 { + compatible = "mtd-factory-otp"; + #address-cells = <1>; + #size-cells = <1>; + + electronic-serial-number@0 { + reg = <0 8>; + }; + }; + + otp-2 { + compatible = "mtd-user-otp"; + #address-cells = <1>; + #size-cells = <1>; + + mac-address@0 { + reg = <0 6>; + }; + }; + }; + }; + ... -- 2.20.1 ______________________________________________________ Linux MTD discussion mailing list http://lists.infradead.org/mailman/listinfo/linux-mtd/
next prev parent reply other threads:[~2021-03-22 18:21 UTC|newest] Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-03-22 18:19 [RFC PATCH 0/4] mtd: core: OTP nvmem provider support Michael Walle 2021-03-22 18:19 ` Michael Walle 2021-03-22 18:19 ` [RFC PATCH 1/4] nvmem: core: allow specifying of_node Michael Walle 2021-03-22 18:19 ` Michael Walle 2021-03-30 10:35 ` Srinivas Kandagatla 2021-03-30 10:35 ` Srinivas Kandagatla 2021-03-22 18:19 ` [RFC PATCH 2/4] dt-bindings: mtd: add YAML schema for the generic MTD bindings Michael Walle 2021-03-22 18:19 ` Michael Walle 2021-03-27 17:04 ` Rob Herring 2021-03-27 17:04 ` Rob Herring 2021-03-22 18:19 ` Michael Walle [this message] 2021-03-22 18:19 ` [RFC PATCH 3/4] dt-bindings: mtd: add OTP bindings Michael Walle 2021-03-27 17:09 ` Rob Herring 2021-03-27 17:09 ` Rob Herring 2021-03-30 10:07 ` Michael Walle 2021-03-30 10:07 ` Michael Walle 2021-03-22 18:19 ` [RFC PATCH 4/4] mtd: core: add OTP nvmem provider support Michael Walle 2021-03-22 18:19 ` Michael Walle 2021-03-30 9:42 ` [RFC PATCH 0/4] mtd: core: " Srinivas Kandagatla 2021-03-30 9:42 ` Srinivas Kandagatla 2021-03-30 9:49 ` Michael Walle 2021-03-30 9:49 ` Michael Walle
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