linux-kernel - [PATCH 3/5] mtd: nand: vf610_nfc: add device tree bindings

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Date:	Thu,  5 Mar 2015 00:10:22 +0100
From:	Stefan Agner <stefan@...er.ch>
To:	dwmw2@...radead.org, computersforpeace@...il.com
Cc:	robh+dt@...nel.org, pawel.moll@....com, mark.rutland@....com,
	ijc+devicetree@...lion.org.uk, galak@...eaurora.org,
	shawn.guo@...aro.org, kernel@...gutronix.de,
	boris.brezillon@...e-electrons.com, marb@...at.de,
	aaron@...tycactus.com, bpringlemeir@...ps.com,
	linux-mtd@...ts.infradead.org, devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	Stefan Agner <stefan@...er.ch>
Subject: [PATCH 3/5] mtd: nand: vf610_nfc: add device tree bindings

Signed-off-by: Bill Pringlemeir <bpringlemeir@...ps.com>
Signed-off-by: Stefan Agner <stefan@...er.ch>
---
 .../devicetree/bindings/mtd/vf610-nfc.txt          | 38 ++++++++++++++++++++++
 1 file changed, 38 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/mtd/vf610-nfc.txt

diff --git a/Documentation/devicetree/bindings/mtd/vf610-nfc.txt b/Documentation/devicetree/bindings/mtd/vf610-nfc.txt
new file mode 100644
index 0000000..54207f8
--- /dev/null
+++ b/Documentation/devicetree/bindings/mtd/vf610-nfc.txt
@@ -0,0 +1,38 @@
+Freescale's NAND flash controller (NFC)
+
+This variant of the Freescale NAND flash controller (NFC) is on Vybrid (vf610),
+MPC5125, MCF54418 and Kinetis K70.
+
+Required properties:
+- compatible: "fsl,vf610-nfc"
+- reg: Address range of the mtd chip
+- interrupts: Should contain the STMMAC interrupts
+- nand-bus-width: see nand.txt
+- nand-ecc-mode: see nand.txt
+- nand-on-flash-bbt: see nand.txt
+- clock-frequency : Optional clock rate to NFC in Hz
+- #address-cells, #size-cells : Must be present if the device has sub-nodes
+  representing partitions.
+
+Required properties for hardware ECC:
+- nand-ecc-strength: supported strengths are 24 and 32 (see nand.txt)
+- nand-ecc-step-size: step size equals page size, currently only 2k pages are
+  supported
+
+Example:
+
+	nfc: nand@...e0000 {
+		compatible = "fsl,vf610-nfc";
+		#address-cells = <1>;
+		#size-cells = <1>;
+		reg = <0x400e0000 0x4000>;
+		interrupts = <GIC_SPI 83 IRQ_TYPE_LEVEL_HIGH>;
+		clocks = <&clks VF610_CLK_NFC>;
+		clock-names = "nfc";
+		clock-frequency = <33000000>;
+		nand-bus-width = <8>;
+		nand-ecc-mode = "hw";
+		nand-on-flash-bbt;
+		nand-ecc-strength = <32>;
+		nand-ecc-step-size = <2048>;
+	};
-- 
2.3.0

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