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Message-id: <1403843406-28229-4-git-send-email-cw00.choi@samsung.com>
Date: Fri, 27 Jun 2014 13:30:05 +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,
kyungmin.park@...sung.com, linux-iio@...r.kernel.org,
linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org,
devicetree@...r.kernel.org, Chanwoo Choi <cw00.choi@...sung.com>
Subject: [PATCHv5 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_adc') 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>
Reviewed-by: Naveen Krishna Chatradhi <ch.naveen@...sung.com>
---
.../devicetree/bindings/arm/samsung/exynos-adc.txt | 26 ++++++++++++++++++++--
1 file changed, 24 insertions(+), 2 deletions(-)
diff --git a/Documentation/devicetree/bindings/arm/samsung/exynos-adc.txt b/Documentation/devicetree/bindings/arm/samsung/exynos-adc.txt
index 5d49f2b..b87749a 100644
--- a/Documentation/devicetree/bindings/arm/samsung/exynos-adc.txt
+++ b/Documentation/devicetree/bindings/arm/samsung/exynos-adc.txt
@@ -14,14 +14,22 @@ Required properties:
for exynos4412/5250 controllers.
Must be "samsung,exynos-adc-v2" for
future controllers.
+ Must be "samsung,exynos3250-adc-v2" for
+ for controllers compatible with ADC of
+ Exynos3250.
- 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
format is being dependent on which interrupt controller
the Samsung device uses.
- #io-channel-cells = <1>; As ADC has multiple outputs
-- clocks From common clock binding: handle to adc clock.
-- clock-names From common clock binding: Shall be "adc".
+- clocks From common clock bindings: handles to clocks specified
+ in "clock-names" property, in the same order.
+- clock-names From common clock bindings: list of clock input names
+ used by ADC block:
+ - "adc" : ADC bus clock
+ - "sclk_adc" : ADC special clock (only for Exynos3250
+ and compatible ADC block)
- vdd-supply VDD input supply.
Note: child nodes can be added for auto probing from device tree.
@@ -41,6 +49,20 @@ 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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