From 2f2b7fb202a2fa93702a79d36033e5c8bee0120d Mon Sep 17 00:00:00 2001 From: Stephen Warren Date: Wed, 19 Sep 2012 12:02:31 -0600 Subject: [PATCH] ARM: tegra: define DT bindings for and instantiate timer The Tegra timer provides a number of 29-bit timer channels, a single 32-bit free running counter, and in the Tegra30 variant, 5 watchdog modules. The first two channels may also trigger a legacy watchdog reset. Define a DT binding for this HW module, and add the module into the Tegra device tree files. Signed-off-by: Stephen Warren --- .../bindings/timer/nvidia,tegra20-timer.txt | 21 ++++++++++++++++++++ .../bindings/timer/nvidia,tegra30-timer.txt | 23 ++++++++++++++++++++++ arch/arm/boot/dts/tegra20.dtsi | 9 +++++++++ arch/arm/boot/dts/tegra30.dtsi | 11 +++++++++++ 4 files changed, 64 insertions(+) create mode 100644 Documentation/devicetree/bindings/timer/nvidia,tegra20-timer.txt create mode 100644 Documentation/devicetree/bindings/timer/nvidia,tegra30-timer.txt diff --git a/Documentation/devicetree/bindings/timer/nvidia,tegra20-timer.txt b/Documentation/devicetree/bindings/timer/nvidia,tegra20-timer.txt new file mode 100644 index 0000000..e019fdc --- /dev/null +++ b/Documentation/devicetree/bindings/timer/nvidia,tegra20-timer.txt @@ -0,0 +1,21 @@ +NVIDIA Tegra20 timer + +The Tegra20 timer provides four 29-bit timer channels and a single 32-bit free +running counter. The first two channels may also trigger a watchdog reset. + +Required properties: + +- compatible : should be "nvidia,tegra20-timer". +- reg : Specifies base physical address and size of the registers. +- interrupts : A list of 4 interrupts; one per timer channel. + +Example: + +timer { + compatible = "nvidia,tegra20-timer"; + reg = <0x60005000 0x60>; + interrupts = <0 0 0x04 + 0 1 0x04 + 0 41 0x04 + 0 42 0x04>; +}; diff --git a/Documentation/devicetree/bindings/timer/nvidia,tegra30-timer.txt b/Documentation/devicetree/bindings/timer/nvidia,tegra30-timer.txt new file mode 100644 index 0000000..906109d --- /dev/null +++ b/Documentation/devicetree/bindings/timer/nvidia,tegra30-timer.txt @@ -0,0 +1,23 @@ +NVIDIA Tegra30 timer + +The Tegra30 timer provides ten 29-bit timer channels, a single 32-bit free +running counter, and 5 watchdog modules. The first two channels may also +trigger a legacy watchdog reset. + +Required properties: + +- compatible : should be "nvidia,tegra30-timer", "nvidia,tegra20-timer". +- reg : Specifies base physical address and size of the registers. +- interrupts : A list of 6 interrupts; one per each of timer channels 1 + through 5, and one for the shared interrupt for the remaining channels. + +timer { + compatible = "nvidia,tegra30-timer", "nvidia,tegra20-timer"; + reg = <0x60005000 0x400>; + interrupts = <0 0 0x04 + 0 1 0x04 + 0 41 0x04 + 0 42 0x04 + 0 121 0x04 + 0 122 0x04>; +}; diff --git a/arch/arm/boot/dts/tegra20.dtsi b/arch/arm/boot/dts/tegra20.dtsi index fba998e..96c922d 100644 --- a/arch/arm/boot/dts/tegra20.dtsi +++ b/arch/arm/boot/dts/tegra20.dtsi @@ -108,6 +108,15 @@ #interrupt-cells = <3>; }; + timer@60005000 { + compatible = "nvidia,tegra20-timer"; + reg = <0x60005000 0x60>; + interrupts = <0 0 0x04 + 0 1 0x04 + 0 41 0x04 + 0 42 0x04>; + }; + apbdma: dma { compatible = "nvidia,tegra20-apbdma"; reg = <0x6000a000 0x1200>; diff --git a/arch/arm/boot/dts/tegra30.dtsi b/arch/arm/boot/dts/tegra30.dtsi index 1f7f49a..48a8320 100644 --- a/arch/arm/boot/dts/tegra30.dtsi +++ b/arch/arm/boot/dts/tegra30.dtsi @@ -108,6 +108,17 @@ #interrupt-cells = <3>; }; + timer@60005000 { + compatible = "nvidia,tegra30-timer", "nvidia,tegra20-timer"; + reg = <0x60005000 0x400>; + interrupts = <0 0 0x04 + 0 1 0x04 + 0 41 0x04 + 0 42 0x04 + 0 121 0x04 + 0 122 0x04>; + }; + apbdma: dma { compatible = "nvidia,tegra30-apbdma", "nvidia,tegra20-apbdma"; reg = <0x6000a000 0x1400>; -- 2.7.4