From: Stephen Warren <swarren@xxxxxxxxxx>
The Tegra RTC maintains seconds and milliseconds counters, and five alarm
registers. The alarms and other interrupts may wake the system from
low-power state.
Define a DT binding for this HW module, and add the module into the Tegra
device tree files.
Signed-off-by: Stephen Warren <swarren@xxxxxxxxxx>
---
.../devicetree/bindings/rtc/nvidia,tegra20-rtc.txt | 19 +++++++++++++++++++
arch/arm/boot/dts/tegra20.dtsi | 6 ++++++
arch/arm/boot/dts/tegra30.dtsi | 6 ++++++
3 files changed, 31 insertions(+), 0 deletions(-)
create mode 100644 Documentation/devicetree/bindings/rtc/nvidia,tegra20-rtc.txt
diff --git a/Documentation/devicetree/bindings/rtc/nvidia,tegra20-rtc.txt b/Documentation/devicetree/bindings/rtc/nvidia,tegra20-rtc.txt
new file mode 100644
index 0000000..93f45e9
--- /dev/null
+++ b/Documentation/devicetree/bindings/rtc/nvidia,tegra20-rtc.txt
@@ -0,0 +1,19 @@
+NVIDIA Tegra20 real-time clock
+
+The Tegra RTC maintains seconds and milliseconds counters, and five alarm
+registers. The alarms and other interrupts may wake the system from low-power
+state.
+
+Required properties:
+
+- compatible : should be "nvidia,tegra20-rtc".
+- reg : Specifies base physical address and size of the registers.
+- interrupts : A single interrupt specifier.
+
+Example:
+
+timer {
+ compatible = "nvidia,tegra20-rtc";
+ reg = <0x7000e000 0x100>;
+ interrupts = <0 2 0x04>;
+};
diff --git a/arch/arm/boot/dts/tegra20.dtsi b/arch/arm/boot/dts/tegra20.dtsi
index 0fadf4d..9d22238 100644
--- a/arch/arm/boot/dts/tegra20.dtsi
+++ b/arch/arm/boot/dts/tegra20.dtsi
@@ -138,6 +138,12 @@
#pwm-cells = <2>;
};
+ rtc {
+ compatible = "nvidia,tegra20-rtc";
+ reg = <0x7000e000 0x100>;
+ interrupts = <0 2 0x04>;
+ };
+
i2c@7000c000 {
compatible = "nvidia,tegra20-i2c";
reg = <0x7000c000 0x100>;
diff --git a/arch/arm/boot/dts/tegra30.dtsi b/arch/arm/boot/dts/tegra30.dtsi
index d6f8e4c..ffb035a 100644
--- a/arch/arm/boot/dts/tegra30.dtsi
+++ b/arch/arm/boot/dts/tegra30.dtsi
@@ -134,6 +134,12 @@
#pwm-cells = <2>;
};
+ rtc {
+ compatible = "nvidia,tegra30-rtc", "nvidia,tegra20-rtc";
+ reg = <0x7000e000 0x100>;
+ interrupts = <0 2 0x04>;
+ };
+
i2c@7000c000 {
compatible = "nvidia,tegra30-i2c", "nvidia,tegra20-i2c";
reg = <0x7000c000 0x100>;
--
1.7.0.4
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