linux-kernel - [PATCH 02/12] mfd: syscon: Add Atmel Matrix bus DT binding documentation

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Date:	Wed, 14 Jan 2015 17:21:54 +0100
From:	Alexandre Belloni <alexandre.belloni@...e-electrons.com>
To:	Felipe Balbi <balbi@...com>
Cc:	Boris Brezillon <boris.brezillon@...e-electrons.com>,
	Alexandre Belloni <alexandre.belloni@...e-electrons.com>,
	Nicolas Ferre <nicolas.ferre@...el.com>,
	Jean-Christophe Plagniol-Villard <plagnioj@...osoft.com>,
	Arnd Bergmann <arnd@...db.de>, linux-usb@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	Jean-Jacques Hiblot <jjhiblot@...phandler.com>
Subject: [PATCH 02/12] mfd: syscon: Add Atmel Matrix bus DT binding documentation

From: Boris Brezillon <boris.brezillon@...e-electrons.com>

The Matrix registers are provided to configure internal bus behavior on
at91 SoCs.
Some registers might be accessed by several drivers (e.g. to configure
external memory bus timings), hence we declare this register set as a
syscon device.

Signed-off-by: Boris Brezillon <boris.brezillon@...e-electrons.com>
Acked-by: Lee Jones <lee.jones@...aro.org>
---
 .../devicetree/bindings/mfd/atmel-matrix.txt       | 24 ++++++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/mfd/atmel-matrix.txt

diff --git a/Documentation/devicetree/bindings/mfd/atmel-matrix.txt b/Documentation/devicetree/bindings/mfd/atmel-matrix.txt
new file mode 100644
index 000000000000..e3ef50ca02a5
--- /dev/null
+++ b/Documentation/devicetree/bindings/mfd/atmel-matrix.txt
@@ -0,0 +1,24 @@
+* Device tree bindings for Atmel Bus Matrix
+
+The Bus Matrix registers are used to configure Atmel SoCs internal bus
+behavior (master/slave priorities, undefined burst length type, ...)
+
+Required properties:
+- compatible:		Should be one of the following
+			"atmel,at91sam9260-matrix", "syscon"
+			"atmel,at91sam9261-matrix", "syscon"
+			"atmel,at91sam9263-matrix", "syscon"
+			"atmel,at91sam9rl-matrix", "syscon"
+			"atmel,at91sam9g45-matrix", "syscon"
+			"atmel,at91sam9n12-matrix", "syscon"
+			"atmel,at91sam9x5-matrix", "syscon"
+			"atmel,sama5d3-matrix", "syscon"
+- reg:			Contains offset/length value of the Bus Matrix
+			memory region.
+
+Example:
+
+matrix: matrix@...fec00 {
+	compatible = "atmel,sama5d3-matrix", "syscon";
+	reg = <0xffffec00 0x200>;
+};
-- 
2.1.0

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