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From: Miquel Raynal <miquel.raynal@bootlin.com>
To: Rob Herring <robh+dt@kernel.org>,
	Mark Rutland <mark.rutland@arm.com>, <devicetree@vger.kernel.org>
Cc: Vignesh Raghavendra <vigneshr@ti.com>,
	Tudor Ambarus <Tudor.Ambarus@microchip.com>,
	juliensu@mxic.com.tw, Richard Weinberger <richard@nod.at>,
	Boris Brezillon <boris.brezillon@collabora.com>,
	linux-mtd@lists.infradead.org,
	Thomas Petazzoni <thomas.petazzoni@bootlin.com>,
	Miquel Raynal <miquel.raynal@bootlin.com>,
	masonccyang@mxic.com.tw
Subject: [PATCH v12 1/2] dt-bindings: mtd: Document nand-ecc-engine
Date: Tue, 30 Jun 2020 09:28:21 +0200
Message-ID: <20200630072822.26828-2-miquel.raynal@bootlin.com> (raw)
In-Reply-To: <20200630072822.26828-1-miquel.raynal@bootlin.com>

This property is needed to precisely point to the hardware ECC engine
to use when there are several of them available. Here, hardware also
refers to the on-die possibility.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
---
 .../devicetree/bindings/mtd/nand-controller.yaml    | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/Documentation/devicetree/bindings/mtd/nand-controller.yaml b/Documentation/devicetree/bindings/mtd/nand-controller.yaml
index 4a0798247d2d..9ee0f3827047 100644
--- a/Documentation/devicetree/bindings/mtd/nand-controller.yaml
+++ b/Documentation/devicetree/bindings/mtd/nand-controller.yaml
@@ -56,6 +56,19 @@ patternProperties:
           (Linux will handle the calculations). soft_bch is deprecated
           and should be replaced by soft and nand-ecc-algo.
 
+      nand-ecc-engine:
+        allOf:
+          - $ref: /schemas/types.yaml#/definitions/phandle
+        description: |
+          A phandle on the hardware ECC engine if any. There are
+          basically three possibilities:
+          1/ The ECC engine is part of the NAND controller, in this
+          case the phandle should reference the parent node.
+          2/ The ECC engine is part of the NAND part (on-die), in this
+          case the phandle should reference the node itself.
+          3/ The ECC engine is external, in this case the phandle should
+          reference the specific ECC engine node.
+
       nand-ecc-placement:
         allOf:
           - $ref: /schemas/types.yaml#/definitions/string
-- 
2.20.1


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Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-30  7:28 [PATCH v12 0/2] NAND ECC engine binding changes Miquel Raynal
2020-06-30  7:28 ` Miquel Raynal [this message]
2020-06-30  7:28 ` [PATCH v12 2/2] dt-bindings: mtd: Document boolean NAND ECC properties Miquel Raynal

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