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ARM: tegra: define DT bindings for and instantiate RTC

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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@nvidia.com>
This commit is contained in:
Stephen Warren 2012-09-19 12:13:16 -06:00
parent 2f2b7fb202
commit 380e04ac2c
3 changed files with 31 additions and 0 deletions
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19
Documentation/devicetree/bindings/rtc/nvidia,tegra20-rtc.txt Normal file
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@ -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>;
};

6
arch/arm/boot/dts/tegra20.dtsi
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@ -234,6 +234,12 @@
#pwm-cells = <2>;
};
rtc {
compatible = "nvidia,tegra20-rtc";
reg = <0x7000e000 0x100>;
interrupts = <0 2 0x04>;
};
i2c@7000c000 {
compatible = "nvidia,tegra20-i2c";
reg = <0x7000c000 0x100>;

6
arch/arm/boot/dts/tegra30.dtsi
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@ -230,6 +230,12 @@
#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>;