aboutsummaryrefslogtreecommitdiffstats
path: root/Documentation/devicetree/bindings/pwm
diff options
context:
space:
mode:
authorLee Jones <lee.jones@linaro.org>2014-07-14 14:33:28 (GMT)
committerThierry Reding <thierry.reding@gmail.com>2014-08-07 14:19:40 (GMT)
commitacad00d3d67ef2a7177beb70e7aeef5f0bd2bcf0 (patch)
tree68149a14e77b0a4e73714bef2e7353581f5ef2c9 /Documentation/devicetree/bindings/pwm
parent378fe115d19d6ab9e9210a2ac330159afabf0237 (diff)
pwm: sti: Supply Device Tree binding documentation for ST's PWM IP
Signed-off-by: Ajit Pal Singh <ajitpal.singh@st.com> Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Diffstat (limited to 'Documentation/devicetree/bindings/pwm')
-rw-r--r--Documentation/devicetree/bindings/pwm/pwm-st.txt41
1 files changed, 41 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/pwm/pwm-st.txt b/Documentation/devicetree/bindings/pwm/pwm-st.txt
new file mode 100644
index 0000000..84d2fb8
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/pwm-st.txt
@@ -0,0 +1,41 @@
+STMicroelectronics PWM driver bindings
+--------------------------------------
+
+Required parameters:
+- compatible : "st,pwm"
+- #pwm-cells : Number of cells used to specify a PWM. First cell
+ specifies the per-chip index of the PWM to use and the
+ second cell is the period in nanoseconds - fixed to 2
+ for STiH41x.
+- reg : Physical base address and length of the controller's
+ registers.
+- pinctrl-names: Set to "default".
+- pinctrl-0: List of phandles pointing to pin configuration nodes
+ for PWM module.
+ For Pinctrl properties, please refer to [1].
+- clock-names: Set to "pwm".
+- clocks: phandle of the clock used by the PWM module.
+ For Clk properties, please refer to [2].
+
+Optional properties:
+- st,pwm-num-chan: Number of available channels. If not passed, the driver
+ will consider single channel by default.
+
+[1] Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt
+[2] Documentation/devicetree/bindings/clock/clock-bindings.txt
+
+Example:
+
+pwm1: pwm@fe510000 {
+ compatible = "st,pwm";
+ reg = <0xfe510000 0x68>;
+ #pwm-cells = <2>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_pwm1_chan0_default
+ &pinctrl_pwm1_chan1_default
+ &pinctrl_pwm1_chan2_default
+ &pinctrl_pwm1_chan3_default>;
+ clocks = <&clk_sysin>;
+ clock-names = "pwm";
+ st,pwm-num-chan = <4>;
+};

Privacy Policy