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tegra: fdt: Add pwm binding and node

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This binding will apparently soon be in linux-next. Bring it in now
since we need to do something, and may as well try to target what
Linux will have.

Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
This commit is contained in:
Simon Glass 2012-10-17 13:24:47 +00:00 committed by Tom Warren
parent b344496110
commit beca1fdeff
2 changed files with 25 additions and 0 deletions
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7
arch/arm/dts/tegra20.dtsi
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@ -211,4 +211,11 @@
compatible = "nvidia,tegra20-nand";
reg = <0x70008000 0x100>;
};
pwm: pwm@7000a000 {
compatible = "nvidia,tegra20-pwm";
reg = <0x7000a000 0x100>;
#pwm-cells = <2>;
};
};

18
doc/device-tree-bindings/pwm/tegra20-pwm.txt Normal file
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@ -0,0 +1,18 @@
Tegra SoC PWFM controller
Required properties:
- compatible: should be one of:
- "nvidia,tegra20-pwm"
- "nvidia,tegra30-pwm"
- reg: physical base address and length of the controller's registers
- #pwm-cells: On Tegra the number of cells used to specify a PWM is 2. The
first cell specifies the per-chip index of the PWM to use and the second
cell is the period in nanoseconds.
Example:
pwm: pwm@7000a000 {
compatible = "nvidia,tegra20-pwm";
reg = <0x7000a000 0x100>;
#pwm-cells = <2>;
};