linux-kernel - [PATCH v3 10/15] dsa: Add new optional devicetree property to describe EEPROM size

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Message-Id: <1414604707-22407-11-git-send-email-linux@roeck-us.net>
Date:	Wed, 29 Oct 2014 10:45:02 -0700
From:	Guenter Roeck <linux@...ck-us.net>
To:	netdev@...r.kernel.org
Cc:	"David S. Miller" <davem@...emloft.net>,
	Florian Fainelli <f.fainelli@...il.com>,
	Andrew Lunn <andrew@...n.ch>, linux-kernel@...r.kernel.org,
	Guenter Roeck <linux@...ck-us.net>, devicetree@...r.kernel.org,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Mark Rutland <mark.rutland@....com>,
	Pawel Moll <pawel.moll@....com>,
	Rob Herring <robh+dt@...nel.org>
Subject: [PATCH v3 10/15] dsa: Add new optional devicetree property to describe EEPROM size

The dsa core now supports reading from and writing to a switch EEPROM
if connected. Describe optional devicetree property indicating that
an EEPROM is present and its size.

Signed-off-by: Guenter Roeck <linux@...ck-us.net>
---
v3:
- eeprom-length property is attached to switch devicetree node,
  not to dsa node.
v2:
- Added patch

 Documentation/devicetree/bindings/net/dsa/dsa.txt | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/net/dsa/dsa.txt b/Documentation/devicetree/bindings/net/dsa/dsa.txt
index a62c889..e124847 100644
--- a/Documentation/devicetree/bindings/net/dsa/dsa.txt
+++ b/Documentation/devicetree/bindings/net/dsa/dsa.txt
@@ -10,7 +10,7 @@ Required properties:
 - dsa,ethernet		: Should be a phandle to a valid Ethernet device node
 - dsa,mii-bus		: Should be a phandle to a valid MDIO bus device node
 
-Optionnal properties:
+Optional properties:
 - interrupts		: property with a value describing the switch
 			  interrupt number (not supported by the driver)
 
@@ -23,6 +23,13 @@ Each of these switch child nodes should have the following required properties:
 - #address-cells	: Must be 1
 - #size-cells		: Must be 0
 
+A switch child node has the following optional property:
+
+- eeprom-length		: Set to the length of an EEPROM connected to the
+			  switch. Must be set if the switch can not detect
+			  the presence and/or size of a connected EEPROM,
+			  otherwise optional.
+
 A switch may have multiple "port" children nodes
 
 Each port children node must have the following mandatory properties:
-- 
1.9.1

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