From: Stephen Warren <[email protected]> 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 <[email protected]> --- .../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 _______________________________________________ devicetree-discuss mailing list [email protected] https://lists.ozlabs.org/listinfo/devicetree-discuss
