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authorSimon Glass <sjg@chromium.org>2012-10-17 13:24:47 +0000
committerTom Warren <twarren@nvidia.com>2012-11-19 08:15:35 -0700
commitbeca1fdeff1a3826148330e2a40297594a710a40 (patch)
treeb52083111866afbeaa8da80280f0e1bb2a29dd5e /doc
parentb34449611025837f315485c7bf54bf5b7ae85d06 (diff)
downloadblackbird-obmc-uboot-beca1fdeff1a3826148330e2a40297594a710a40.tar.gz
blackbird-obmc-uboot-beca1fdeff1a3826148330e2a40297594a710a40.zip
tegra: fdt: Add pwm binding and node
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>
Diffstat (limited to 'doc')
-rw-r--r--doc/device-tree-bindings/pwm/tegra20-pwm.txt18
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diff --git a/doc/device-tree-bindings/pwm/tegra20-pwm.txt b/doc/device-tree-bindings/pwm/tegra20-pwm.txt
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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>;
+ };
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