From: Ansuel Smith <ansuelsmth@gmail.com> To: Andy Gross <agross@kernel.org>, Bjorn Andersson <bjorn.andersson@linaro.org>, Manivannan Sadhasivam <mani@kernel.org>, Miquel Raynal <miquel.raynal@bootlin.com>, Richard Weinberger <richard@nod.at>, Vignesh Raghavendra <vigneshr@ti.com>, Rob Herring <robh+dt@kernel.org>, Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>, linux-arm-msm@vger.kernel.org, linux-mtd@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Ansuel Smith <ansuelsmth@gmail.com> Subject: [PATCH 2/2] dt-bindings: mtd: qcom_nandc: document qcom,boot_pages binding Date: Fri, 29 Apr 2022 23:16:30 +0200 [thread overview] Message-ID: <20220429211630.7812-3-ansuelsmth@gmail.com> (raw) In-Reply-To: <20220429211630.7812-1-ansuelsmth@gmail.com> Document new qcom,boot_pages binding used to apply special read/write configuration to boot pages. QCOM apply a special configuration where spare data is not protected by ECC for some special pages (used for boot partition). Add Documentation on how to declare these special pages. Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com> --- .../devicetree/bindings/mtd/qcom,nandc.yaml | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/Documentation/devicetree/bindings/mtd/qcom,nandc.yaml b/Documentation/devicetree/bindings/mtd/qcom,nandc.yaml index 84ad7ff30121..ef243109689d 100644 --- a/Documentation/devicetree/bindings/mtd/qcom,nandc.yaml +++ b/Documentation/devicetree/bindings/mtd/qcom,nandc.yaml @@ -78,6 +78,17 @@ allOf: Must contain the ADM data type CRCI block instance number specified for the NAND controller on the given platform + qcom,boot_pages: + $ref: /schemas/types.yaml#/definitions/uint32-array + description: + Some special page used by boot partition have spare data + not protected by ECC. Use this to declare these special page + by defining first the offset and then the size. + + It's in the form of <offset1 size1 offset2 size2 offset3 ...> + + Refer to the ipq8064 example on how to use this special binding. + - if: properties: compatible: @@ -135,6 +146,8 @@ examples: nand-ecc-strength = <4>; nand-bus-width = <8>; + qcom,boot_pages = <0x0 0x58a0000>; + partitions { compatible = "fixed-partitions"; #address-cells = <1>; -- 2.34.1
WARNING: multiple messages have this Message-ID (diff)
From: Ansuel Smith <ansuelsmth@gmail.com> To: Andy Gross <agross@kernel.org>, Bjorn Andersson <bjorn.andersson@linaro.org>, Manivannan Sadhasivam <mani@kernel.org>, Miquel Raynal <miquel.raynal@bootlin.com>, Richard Weinberger <richard@nod.at>, Vignesh Raghavendra <vigneshr@ti.com>, Rob Herring <robh+dt@kernel.org>, Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>, linux-arm-msm@vger.kernel.org, linux-mtd@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Ansuel Smith <ansuelsmth@gmail.com> Subject: [PATCH 2/2] dt-bindings: mtd: qcom_nandc: document qcom, boot_pages binding Date: Fri, 29 Apr 2022 23:16:30 +0200 [thread overview] Message-ID: <20220429211630.7812-3-ansuelsmth@gmail.com> (raw) In-Reply-To: <20220429211630.7812-1-ansuelsmth@gmail.com> Document new qcom,boot_pages binding used to apply special read/write configuration to boot pages. QCOM apply a special configuration where spare data is not protected by ECC for some special pages (used for boot partition). Add Documentation on how to declare these special pages. Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com> --- .../devicetree/bindings/mtd/qcom,nandc.yaml | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/Documentation/devicetree/bindings/mtd/qcom,nandc.yaml b/Documentation/devicetree/bindings/mtd/qcom,nandc.yaml index 84ad7ff30121..ef243109689d 100644 --- a/Documentation/devicetree/bindings/mtd/qcom,nandc.yaml +++ b/Documentation/devicetree/bindings/mtd/qcom,nandc.yaml @@ -78,6 +78,17 @@ allOf: Must contain the ADM data type CRCI block instance number specified for the NAND controller on the given platform + qcom,boot_pages: + $ref: /schemas/types.yaml#/definitions/uint32-array + description: + Some special page used by boot partition have spare data + not protected by ECC. Use this to declare these special page + by defining first the offset and then the size. + + It's in the form of <offset1 size1 offset2 size2 offset3 ...> + + Refer to the ipq8064 example on how to use this special binding. + - if: properties: compatible: @@ -135,6 +146,8 @@ examples: nand-ecc-strength = <4>; nand-bus-width = <8>; + qcom,boot_pages = <0x0 0x58a0000>; + partitions { compatible = "fixed-partitions"; #address-cells = <1>; -- 2.34.1 ______________________________________________________ Linux MTD discussion mailing list http://lists.infradead.org/mailman/listinfo/linux-mtd/
next prev parent reply other threads:[~2022-04-29 21:19 UTC|newest] Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top 2022-04-29 21:16 [PATCH 0/2] Add support for unprotected spare data page Ansuel Smith 2022-04-29 21:16 ` Ansuel Smith 2022-04-29 21:16 ` [PATCH 1/2] mtd: nand: raw: qcom_nandc: add support for unprotected spare data pages Ansuel Smith 2022-04-29 21:16 ` Ansuel Smith 2022-04-29 21:16 ` Ansuel Smith [this message] 2022-04-29 21:16 ` [PATCH 2/2] dt-bindings: mtd: qcom_nandc: document qcom, boot_pages binding Ansuel Smith 2022-04-30 14:43 ` [PATCH 2/2] dt-bindings: mtd: qcom_nandc: document qcom,boot_pages binding Krzysztof Kozlowski 2022-04-30 14:43 ` Krzysztof Kozlowski
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