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authorTony Prisk <linux@prisktech.co.nz>2012-10-27 01:49:57 (GMT)
committerThierry Reding <thierry.reding@avionic-design.de>2012-11-01 15:23:19 (GMT)
commit63e1ed2364050073770c085021377d7764969b85 (patch)
treee95f1e874f5c2096ff63567fcdf00c55fdb660d3 /Documentation/devicetree/bindings/pwm
parent8f0d8163b50e01f398b14bcd4dc039ac5ab18d64 (diff)
pwm: vt8500: Update vt8500 PWM driver support
This patch updates pwm-vt8500.c to support devicetree probing and make use of the common clock subsystem. A binding document describing the PWM controller found on arch-vt8500 is also included. Signed-off-by: Tony Prisk <linux@prisktech.co.nz> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Diffstat (limited to 'Documentation/devicetree/bindings/pwm')
-rw-r--r--Documentation/devicetree/bindings/pwm/vt8500-pwm.txt17
1 files changed, 17 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/pwm/vt8500-pwm.txt b/Documentation/devicetree/bindings/pwm/vt8500-pwm.txt
new file mode 100644
index 0000000..bcc6367
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/vt8500-pwm.txt
@@ -0,0 +1,17 @@
+VIA/Wondermedia VT8500/WM8xxx series SoC PWM controller
+
+Required properties:
+- compatible: should be "via,vt8500-pwm"
+- reg: physical base address and length of the controller's registers
+- #pwm-cells: should be 2. The first cell specifies the per-chip index
+ of the PWM to use and the second cell is the period in nanoseconds.
+- clocks: phandle to the PWM source clock
+
+Example:
+
+pwm1: pwm@d8220000 {
+ #pwm-cells = <2>;
+ compatible = "via,vt8500-pwm";
+ reg = <0xd8220000 0x1000>;
+ clocks = <&clkpwm>;
+};

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