linux-kernel - [PATCH 3/3] dt-bindings: mtd: Add Octal SPI support to Cadence QSPI.

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Date:   Mon, 6 Mar 2017 12:34:31 +0000
From:   Artur Jedrysek <jartur@...ence.com>
To:     <devicetree@...r.kernel.org>, <linux-mtd@...ts.infradead.org>
CC:     <linux-kernel@...r.kernel.org>,
        Cyrille Pitchen <cyrille.pitchen@...el.com>,
        Marek Vasut <marek.vasut@...il.com>,
        David Woodhouse <dwmw2@...radead.org>,
        Brian Norris <computersforpeace@...il.com>,
        Boris Brezillon <boris.brezillon@...e-electrons.com>,
        Richard Weinberger <richard@....at>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Artur Jedrysek <jartur@...ence.com>
Subject: [PATCH 3/3] dt-bindings: mtd: Add Octal SPI support to Cadence QSPI.

This patch updates Cadence QSPI Device Tree documentation to include
information about new property used to indicate, whether or not
Octal SPI transfers are supported by the device.

Signed-off-by: Artur Jedrysek <jartur@...ence.com>
---
 Documentation/devicetree/bindings/mtd/cadence-quadspi.txt | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Documentation/devicetree/bindings/mtd/cadence-quadspi.txt b/Documentation/devicetree/bindings/mtd/cadence-quadspi.txt
index f248056..8438184 100644
--- a/Documentation/devicetree/bindings/mtd/cadence-quadspi.txt
+++ b/Documentation/devicetree/bindings/mtd/cadence-quadspi.txt
@@ -14,6 +14,9 @@ Required properties:
 
 Optional properties:
 - cdns,is-decoded-cs : Flag to indicate whether decoder is used or not.
+- cdns,octal-controller : Flag to indicate, that used controller supports Octal
+                          SPI transfer mode. May be intentionally omitted to
+                          switch it back to Quad SPI mode.
 
 Optional subnodes:
 Subnodes of the Cadence Quad SPI controller are spi slave nodes with additional
@@ -44,6 +47,7 @@ Example:
 		cdns,fifo-depth = <128>;
 		cdns,fifo-width = <4>;
 		cdns,trigger-address = <0x00000000>;
+		#cdns,octal-controller
 
 		flash0: n25q00@0 {
 			...
-- 
2.2.2