Add pin group bindings to support input capture function of the i.MX
GPT.
Signed-off-by: Steve Longerbeam <slongerbeam@xxxxxxxxx>
---
.../devicetree/bindings/timer/fsl,imxgpt.txt | 28 +++++++++++++++++++
1 file changed, 28 insertions(+)
diff --git a/Documentation/devicetree/bindings/timer/fsl,imxgpt.txt b/Documentation/devicetree/bindings/timer/fsl,imxgpt.txt
index 5d8fd5b52598..32797b7b0d02 100644
--- a/Documentation/devicetree/bindings/timer/fsl,imxgpt.txt
+++ b/Documentation/devicetree/bindings/timer/fsl,imxgpt.txt
@@ -33,6 +33,13 @@ Required properties:
an entry for each entry in clock-names.
- clock-names : must include "ipg" entry first, then "per" entry.
+Optional properties:
+
+- pinctrl-0: For the i.MX GPT to support the Input Capture function,
+ the input capture channel pin groups must be listed here.
+- pinctrl-names: must be "default".
+
+
Example:
gpt1: timer@10003000 {
@@ -43,3 +50,24 @@ gpt1: timer@10003000 {
<&clks IMX27_CLK_PER1_GATE>;
clock-names = "ipg", "per";
};
+
+
+Example with input capture channel 0 support:
+
+pinctrl_gpt_input_capture0: gptinputcapture0grp {
+ fsl,pins = <
+ MX6QDL_PAD_SD1_DAT0__GPT_CAPTURE1 0x1b0b0
+ >;
+};
+
+gpt: gpt@2098000 {
+ compatible = "fsl,imx6q-gpt", "fsl,imx31-gpt";
+ reg = <0x02098000 0x4000>;
+ interrupts = <0 55 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&clks IMX6QDL_CLK_GPT_IPG>,
+ <&clks IMX6QDL_CLK_GPT_IPG_PER>,
+ <&clks IMX6QDL_CLK_GPT_3M>;
+ clock-names = "ipg", "per", "osc_per";
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_gpt_input_capture0>;
+};
--
2.17.1
