linux-kernel - [PATCH 3/3] Add i.MX8MM GPT input capture example.

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Date:   Thu, 10 Feb 2022 16:43:35 +0800
From:   Kane Jiang <jian.jiang@....com>
To:     Daniel Lezcano <daniel.lezcano@...aro.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        NXP Linux Team <linux-imx@....com>,
        Steve Longerbeam <slongerbeam@...il.com>,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        Rob Herring <robh+dt@...nel.org>, devicetree@...r.kernel.org
Cc:     Kane Jiang <jian.jiang@....com>
Subject: [PATCH 3/3] Add i.MX8MM GPT input capture example.

Cause i.MX GPT dts example cannot match i.MX8 chip series.
So add NXP i.MX8MM chip GPT input capture function example
to yaml file.

Signed-off-by: Kane Jiang <jian.jiang@....com>
---
 .../devicetree/bindings/timer/fsl,imxgpt.yaml | 48 +++++++++++++++++++
 1 file changed, 48 insertions(+)

diff --git a/Documentation/devicetree/bindings/timer/fsl,imxgpt.yaml b/Documentation/devicetree/bindings/timer/fsl,imxgpt.yaml
index a4f51f46b7a1..917c1d9516cc 100644
--- a/Documentation/devicetree/bindings/timer/fsl,imxgpt.yaml
+++ b/Documentation/devicetree/bindings/timer/fsl,imxgpt.yaml
@@ -58,6 +58,29 @@ required:
 
 additionalProperties: false
 
+allOf:
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: fsl,imx8mm-gpt
+    then:
+      properties:
+        reg:
+          maxItems: 2
+        interrupts:
+          maxItems: 2
+        clocks:
+          items:
+            - description: SoC GPT ipg clock
+            - description: SoC GPT per clock
+            - description: SoC GPT osc per clock
+        clock-names:
+          items:
+            - const: ipg
+            - const: per
+            - const: osc_per
+
 examples:
   - |
     #include <dt-bindings/clock/imx27-clock.h>
@@ -70,3 +93,28 @@ examples:
                  <&clks IMX27_CLK_PER1_GATE>;
         clock-names = "ipg", "per";
     };
+
+  - |
+    #include <dt-bindings/clock/imx8mm-clock.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    soc {
+      #address-cells = <2>;
+      #size-cells = <2>;
+
+      pinctrl_gpt_input_capture0: gptinputcapture0grp {
+        fsl,pins = <0x1CC 0x434 0x000 0x1 0x0		0xd6>;
+      };
+
+      gpt1: gpt@...d0000 {
+        compatible = "fsl,imx8mm-gpt";
+        reg = <0x0 0x302d0000 0x0 0x10000>;
+        interrupts = <GIC_SPI 55 IRQ_TYPE_LEVEL_HIGH>;
+        clocks = <&clk IMX8MM_CLK_GPT1_ROOT>,
+                 <&clk IMX8MM_CLK_GPT1_ROOT>,
+                 <&clk IMX8MM_CLK_GPT_3M>;
+        clock-names = "ipg", "per", "osc_per";
+        pinctrl-names = "default";
+        pinctrl-0 = <&pinctrl_gpt_input_capture0>;
+      };
+    };
-- 
2.25.1