linux-kernel - [PATCH v1] Documentation: add Device tree bindings for hwmon/nct7802

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Message-Id: <1440973572-19571-1-git-send-email-const@MakeLinux.com>
Date:	Mon, 31 Aug 2015 01:15:49 +0300
From:	Constantine Shulyupin <const@...eLinux.com>
To:	Rob Herring <robh+dt@...nel.org>, Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Constantine Shulyupin <const@...eLinux.com>,
	devicetree@...r.kernel.org (open list:OPEN FIRMWARE AND FLATTENED
	DEVICE TREE BINDINGS), linux-kernel@...r.kernel.org (open list)
Cc:	linux@...ck-us.net
Subject: [PATCH v1] Documentation: add Device tree bindings for hwmon/nct7802

reg-init implementation is borowerd from
broadcom,c45-reg-init and marvell,reg-init.

Signed-off-by: Constantine Shulyupin <const@...eLinux.com>
---
---
 .../devicetree/bindings/hwmon/nct7802.txt          | 27 ++++++++++++++++++++++
 1 file changed, 27 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/hwmon/nct7802.txt

diff --git a/Documentation/devicetree/bindings/hwmon/nct7802.txt b/Documentation/devicetree/bindings/hwmon/nct7802.txt
new file mode 100644
index 0000000..fa83628
--- /dev/null
+++ b/Documentation/devicetree/bindings/hwmon/nct7802.txt
@@ -0,0 +1,27 @@
+Nuvoton NCT7802Y Hardware Monitoring IC
+
+Required node properties:
+
+ - "compatible": must be "nuvoton,nct7802"
+ - "reg": I2C bus address of the device
+
+Optional properties:
+
+Numeric registors initialiaztion:
+
+- nct7802,reg-init : one of more sets of 4 cells.  The first cell
+  is the page address, the second a register address within the page,
+  the third cell contains a mask to be ANDed with the existing register
+  value, and the fourth cell is ORed with the result to yield the
+  new register value. If the third cell has a value of zero,
+  no read of the existing value is performed.
+
+Example nct7802 node:
+
+nct7802 {
+	compatible = "nuvoton,nct7802";
+	reg = <0x2a>;
+	nct7802,reg-init =
+		<0 0x21 0 0x01 > // START = 1
+		<0 0x22 0x03 0x02>; // RTD1_MD = 2
+};
-- 
1.9.1

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