linux-kernel - [PATCHv4 3/4] iio: devicetree: Add DT binding documentation for Exynos3250 ADC

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Message-id: <1403058061-24271-4-git-send-email-cw00.choi@samsung.com>
Date:	Wed, 18 Jun 2014 11:21:00 +0900
From:	Chanwoo Choi <cw00.choi@...sung.com>
To:	jic23@...nel.org, ch.naveen@...sung.com, t.figa@...sung.com,
	kgene.kim@...sung.com
Cc:	robh+dt@...nel.org, pawel.moll@....com, mark.rutland@....com,
	ijc+devicetree@...lion.org.uk, galak@...eaurora.org,
	rdunlap@...radead.org, sachin.kamat@...aro.org,
	linux-iio@...r.kernel.org, linux-samsung-soc@...r.kernel.org,
	linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
	linux-doc@...r.kernel.org, Chanwoo Choi <cw00.choi@...sung.com>
Subject: [PATCHv4 3/4] iio: devicetree: Add DT binding documentation for
 Exynos3250 ADC

This patch add DT binding documentation for Exynos3250 ADC IP. Exynos3250 has
special clock ('sclk_tsadc') for ADC which provide clock to internal ADC.

Signed-off-by: Chanwoo Choi <cw00.choi@...sung.com>
Acked-by: Kyungmin Park <kyungmin.park@...sung.com>
---
 .../devicetree/bindings/arm/samsung/exynos-adc.txt   | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/Documentation/devicetree/bindings/arm/samsung/exynos-adc.txt b/Documentation/devicetree/bindings/arm/samsung/exynos-adc.txt
index 5d49f2b..3a5af82 100644
--- a/Documentation/devicetree/bindings/arm/samsung/exynos-adc.txt
+++ b/Documentation/devicetree/bindings/arm/samsung/exynos-adc.txt
@@ -14,6 +14,8 @@ Required properties:
 				for exynos4412/5250 controllers.
 			Must be "samsung,exynos-adc-v2" for
 				future controllers.
+			Must be "samsung,exynos3250-adc-v2" for
+				for exynos3250 controllers.
 - reg:			Contains ADC register address range (base address and
 			length) and the address of the phy enable register.
 - interrupts: 		Contains the interrupt information for the timer. The
@@ -21,7 +23,11 @@ Required properties:
 			the Samsung device uses.
 - #io-channel-cells = <1>; As ADC has multiple outputs
 - clocks		From common clock binding: handle to adc clock.
+			From common clock binding: handle to sclk_tsadc clock
+			if using Exynos3250.
 - clock-names		From common clock binding: Shall be "adc".
+			From common clock binding: Shall be "sclk_tsadc"
+			if using Exynos3250.
 - vdd-supply		VDD input supply.
 
 Note: child nodes can be added for auto probing from device tree.
@@ -41,6 +47,20 @@ adc: adc@...10000 {
 	vdd-supply = <&buck5_reg>;
 };
 
+Example: adding device info in dtsi file for Exynos3250 with additional sclk
+
+adc: adc@...C0000 {
+	compatible = "samsung,exynos3250-adc-v2";
+	reg = <0x126C0000 0x100>, <0x10020718 0x4>;
+	interrupts = <0 137 0>;
+	#io-channel-cells = <1>;
+	io-channel-ranges;
+
+	clocks = <&cmu CLK_TSADC>, <&cmu CLK_SCLK_TSADC>;
+	clock-names = "adc", "sclk_adc";
+
+	vdd-supply = <&buck5_reg>;
+};
 
 Example: Adding child nodes in dts file
 
-- 
1.8.0

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