linux-kernel - [PATCH v4 3/5] dt/bindings: bcm2835: add binding documentation for bcm2835-aux

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Message-Id: <1440405608-3995-4-git-send-email-kernel@martin.sperl.org>
Date:	Mon, 24 Aug 2015 08:40:06 +0000
From:	kernel@...tin.sperl.org
To:	Stephen Warren <swarren@...dotorg.org>, Lee Jones <lee@...nel.org>,
	Russell King <linux@....linux.org.uk>,
	Mark Brown <broonie@...nel.org>,
	Mark Rutland <mark.rutland@....com>,
	devicetree@...r.kernel.org, linux-rpi-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-spi@...r.kernel.org,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Kumar Gala <galak@...eaurora.org>
Cc:	Martin Sperl <kernel@...tin.sperl.org>
Subject: [PATCH v4 3/5] dt/bindings: bcm2835: add binding documentation for bcm2835-aux

From: Martin Sperl <kernel@...tin.sperl.org>

Signed-off-by: Martin Sperl <kernel@...tin.sperl.org>
---
 .../bindings/soc/bcm/brcm,bcm2835-aux.txt          |   27 ++++++++++++++++++++
 1 file changed, 27 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-aux.txt

diff --git a/Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-aux.txt b/Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-aux.txt
new file mode 100644
index 0000000..8b79cf3
--- /dev/null
+++ b/Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-aux.txt
@@ -0,0 +1,27 @@
+Broadcom BCM2835 auxiliar device enable register
+
+the BCM2835 contains 3 auxiliar devices (spi1/spi2/uart1)
+which need to get enabled via a shared register.
+
+Required properties:
+- compatible: Should be "brcm,bcm2835-aux".
+- reg: Should contain register location and length for the
+       enable register
+
+Example:
+
+aux_enable: aux_enable@...e215004 {
+	compatible = "bcrm,bcm2835-aux";
+	reg = <0x7e215004 0x04>;
+};
+
+Typically used in the respective auxiliar device descriptions
+like this:
+
+uart1: uart@...15040 {
+	...
+	brcm,aux-enable = <&aux_enable 1>;
+	...
+};
+
+The name of the property can be device/driver specific.
--
1.7.10.4

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