Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / u-boot / doc / device-tree-bindings / pwm / tegra20-pwm.txt

diff --git a/qemu/roms/u-boot/doc/device-tree-bindings/pwm/tegra20-pwm.txt b/qemu/roms/u-boot/doc/device-tree-bindings/pwm/tegra20-pwm.txt
new file mode 100644 (file)
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+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>;
+       };